Academic literature on the topic 'Slow photon'

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the lists of relevant articles, books, theses, conference reports, and other scholarly sources on the topic 'Slow photon.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Journal articles on the topic "Slow photon"

1

Bautista, E. Sánchez, E. Cabrera-Granado, and R. Weigand. "Two-photon and two-photon-assisted slow light." Optics Letters 36, no. 5 (February 18, 2011): 639. http://dx.doi.org/10.1364/ol.36.000639.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Ma, Xuedan, Nicolai F. Hartmann, Kirill A. Velizhanin, Jon K. S. Baldwin, Lyudmyla Adamska, Sergei Tretiak, Stephen K. Doorn, and Han Htoon. "Multi-exciton emission from solitary dopant states of carbon nanotubes." Nanoscale 9, no. 42 (2017): 16143–48. http://dx.doi.org/10.1039/c7nr06661a.

Full text
Abstract:
By separating the photons from slow and fast decays of single- and multi-excitons in a time gated 2nd order photon correlation experiment, we show that solitary oxygen dopants of carbon nanotubes allow emission of photon pairs with ∼44% of single exciton quantum yield.
APA, Harvard, Vancouver, ISO, and other styles
3

Jota, F. G., A. R. Braga, and M. B. L. Santos. "Photon correlator for slow temporal fluctuations." Measurement Science and Technology 3, no. 7 (July 1, 1992): 643–46. http://dx.doi.org/10.1088/0957-0233/3/7/002.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Shao, Yabin, Chen Chen, Qing He, Wenzhi Wu, Chensha Li, and Yachen Gao. "Broadband Visible Nonlinear Absorption and Ultrafast Dynamics of the Ti3C2 Nanosheet." Nanomaterials 10, no. 12 (December 17, 2020): 2544. http://dx.doi.org/10.3390/nano10122544.

Full text
Abstract:
The Ti3C2 nanosheet, as a new two-dimensional (2D) group, has been found to have attractive characteristics as material for electromagnetic shielding and energy storage. In this study, the nonlinear broadband absorption and ultrafast dynamics of the Ti3C2 nanosheet were investigated using nanosecond open-aperture Z-scan and transient absorption techniques. The mechanism of two-photon absorption (TPA) was revealed in the visible region (475–700 nm). At lower incident energies, nonlinear absorption could not happen. When the laser energy increased to 0.64 GW/cm2, electrons in the valence band could absorb two photons and jump to the conduction band, with TPA occurring, which meant that the sample exhibited reverse saturable absorption (RSA). In addition, when transient absorption was used to investigate the ultrafast carrier dynamics of the sample, it demonstrated that the relaxation contains a fast decay component and a slow one, which are obtained from electron–phonon and phonon–phonon interactions, respectively. Moreover, with the increasing pump fluence, the fast decay lifetime τ1 increased from 3.9 to 4.5 ps, and the slow one τ2 increased from 11.1 to 13.2 ps. These results show that the Ti3C2 nanosheet has potential applications in broadband optical limiters.
APA, Harvard, Vancouver, ISO, and other styles
5

Nyström, B., R. Hutton, S. Huldt, F. Heijkenskjöld, M. O. Larsson, and A. Wännström. "Photon spectroscopy of slow He2++ He collisions." Physica Scripta T73 (January 1, 1997): 212–13. http://dx.doi.org/10.1088/0031-8949/1997/t73/065.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

Eftekhari, Ehsan, Pierre Broisson, Nikhil Aravindakshan, Zhiqing Wu, Ivan S. Cole, Xiaomin Li, Dongyuan Zhao, and Qin Li. "Sandwich-structured TiO2 inverse opal circulates slow photons for tremendous improvement in solar energy conversion efficiency." Journal of Materials Chemistry A 5, no. 25 (2017): 12803–10. http://dx.doi.org/10.1039/c7ta01703k.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Shao, Yabin, Chen Chen, Qing He, Lingling Xiang, and Xianjing Lai. "Effect of Ultrafast Broadband Nonlinear Optical Responses by Doping Silver into Ti3C2 Nanosheets at Visible Spectra." Coatings 12, no. 2 (February 1, 2022): 189. http://dx.doi.org/10.3390/coatings12020189.

Full text
Abstract:
Ti3C2 nanosheet is a newly discovered two-dimensional (2D) clan. It turns out to have encouraging applications for electromagnetic shielding and energy storage. Here, Ag@ Ti3C2 hybrids are precisely synthesized by using the one-step solution processing method. Also, their ultrafast broadband nonlinear optical responses in the visible region are studied systematically through nanosecond open-aperture Z-scan and transient absorption techniques. The mechanism of two-photon absorption (TPA) is disclosed in the visible region (409–532 nm). When the laser energy is low and the wavelength is longer than 400 nm, nonlinear absorption cannot happen. Meanwhile, as the laser energy increases, two photons will be absorbed by the electrons in the valence band and the electrons will jump to the conduction band. The process is named as two-photon absorption which will make the specimen show reverse saturable absorption (RSA) properties. What is more, the ultrafast carrier dynamics of the specimen are studied by using the transient absorption. The result shows that the decay contains two phases: the fast and then the slow one. The two phases first come from electron–phonon and then from phonon–phonon interactions, respectively. The electron transfer and charge carrier trapping processes are further verified by the outcomes of similar measurements on Ag@ Ti3C2 hybrids. Besides, the two decay processes increase together with the pump fluence. These results show that Ti3C2 nanosheet has potential applications in broadband optical limiter.
APA, Harvard, Vancouver, ISO, and other styles
8

Lien, Y., S. M. de Vries, N. J. van Druten, M. P. van Exter, and J. P. Woerdman. "Photon Statistics of a Laser with Slow Inversion." Physical Review Letters 86, no. 13 (March 26, 2001): 2786–89. http://dx.doi.org/10.1103/physrevlett.86.2786.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

XIAO, XUN. "GIANT THIRD-ORDER KERR NONLINEARITIES AND SLOW OPTICAL SOLITONS IN DOUBLE QUANTUM-WELL." Modern Physics Letters B 24, no. 17 (July 10, 2010): 1899–905. http://dx.doi.org/10.1142/s0217984910024171.

Full text
Abstract:
We show the formation of slow optical solitons in the asymmetric coupled double quantum wells (CQW) via a two-photon Raman resonance. With the consideration of real parameters in AlGaAs -based CQW, we indicate the possibility to have cancelation of the linear absorption, giant Kerr nonlinearities, and slow group velocity propagation of the weak probe pulse at the same one-photon detuning frequency around several THz .
APA, Harvard, Vancouver, ISO, and other styles
10

LURYI, SERGE, and ARSEN SUBASHIEV. "LÉVY FLIGHT OF HOLES IN InP SEMICONDUCTOR SCINTILLATOR." International Journal of High Speed Electronics and Systems 21, no. 01 (March 2012): 1250001. http://dx.doi.org/10.1142/s0129156412500012.

Full text
Abstract:
High radiative efficiency in moderately doped n- InP results in the transport of holes dominated by photon-assisted hopping, when radiative hole recombination at one spot produces a photon, whose interband absorption generates another hole, possibly far away. Due to "heavy tails" in the hop probability, this is a random walk with divergent diffusivity (process known as the Lévy flight). Our key evidence is derived from the ratio of transmitted and reflected luminescence spectra, measured in samples of different thicknesses. These experiments prove the non-exponential decay of the hole concentration from the initial photo-excitation spot. The power-law decay, characteristic of Lévy flights, is steep enough at short distances (steeper than an exponent) to fit the data for thin samples and slow enough at large distances to account for thick samples. The high radiative efficiency makes possible a semiconductor scintillator with efficient photon collection. It is rather unusual that the material is "opaque" at wavelengths of its own scintillation. Nevertheless, after repeated recycling most photons find their way to one of two photodiodes integrated on both sides of the semiconductor slab. We present an analytical model of photon collection in two-sided slab, which shows that the heavy tails of Lévy-flight transport lead to a high charge collection efficiency and hence high energy resolution. Finally, we discuss a possibility to increase the slab thickness while still quantifying the deposited energy and the interaction position within the slab. The idea is to use a layered semiconductor with photon-assisted collection of holes in narrow-bandgap layers spaced by distances far exceeding diffusion length. Holes collected in these radiative layers emit longwave radiation, to which the entire structure is transparent. Nearly-ideal calculated characteristics of a mm-thick layered scintillator can be scaled up to several centimeters.
APA, Harvard, Vancouver, ISO, and other styles

Dissertations / Theses on the topic "Slow photon"

1

Faggiani, Rémi. "Resonant nanophotonics : structural slow light and slow plasmons." Thesis, Bordeaux, 2016. http://www.theses.fr/2016BORD0396/document.

Full text
Abstract:
L'augmentation de l'interaction lumière-matière aux échelles micro et nanométriques est un des fers de lance de la nanophotonique. En effet, le contrôle de la répartition spatiale de la lumière grâce à l'interaction résonante entre nanostructures et ondes électromagnétiques a conduit aux développements de nombreuses applications dans des domaines variés tels que les télécommunications,la spectroscopie et la détection d'objets. Le ralentissement de la lumière, sujet de la thèse, obtenue grâces à l'interférence d'ondes contre-propageantes dans des milieux périodiques ou le confinement sub-longueur d'onde dans des guides d'ondes plasmoniques, est associé à une compression des pulses lumineux et une forte augmentation du champ électrique, deux phénomènes clés pour la miniaturisation de composées optiques et l'augmentation de l'interaction lumière matière
Enhancing light-matter interactions at micro and nanoscales is one of the spearheads of nanophotonics. Indeed, the control of the field distribution due to the resonant interaction of nanostructures with electromagnetic waves has prompted the development of numerous optical components for many applications in telecommunication, spectroscopy or sensing. A promising approach lies in the control of light speed in nanostructures. Light slowdown, obtained by wave interferences in periodic structures or subwavelength confinement in plasmonic waveguides, is associated to pulse compressions and large field enhancements,which are envisioned as key processes for the miniaturization of optical devices and the enhancement of light-matter interactions.The thesis studies both fundamental aspects and possible applications related to slow light in photonic and plasmonic nanostructures. In particular, we study the impact of periodic system sizes on the group velocity reduction and propose a novelfamily of resonators that implement slow light on very small spatial scales. We then investigate the role of fabrication disorder in slow periodic waveguides on light localization and demonstrate how modal properties influence the confinement of localized modes. Also we propose a new hollow-core photonic crystal waveguide that provides efficient and remote couplings between the waveguide and atoms thatare trapped away from it. Finally we demonstrate the important role played by slow plasmons on the emission of quantum emitters placed in nanogap plasmonic antennas and explain how large radiation efficiency can be achieved by overcoming quenching in the metal. Additionally, one part of the thesis is devoted to thederivation of a novel modal method to accurately describe the dynamics of plasmonic resonators under short pulse illumination
APA, Harvard, Vancouver, ISO, and other styles
2

Thurtell, Tyler. "Slow and Stopped Light with Many Atoms, the Anisotropic Rabi Model and Photon Counting Experiment on a Dissipative Optical Lattice." Miami University / OhioLINK, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=miami1533592687000267.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Escalante, Fernández José María. "Theoretical study of light and sound interaction in phoxonic crystal structures." Doctoral thesis, Universitat Politècnica de València, 2013. http://hdl.handle.net/10251/33754.

Full text
Abstract:
En esta tesis se realiza un estudio teórico de la interacción luz-sonido en estructuras foxonicas, con las cuales es posible el control de la luz y el sonido a la misma vez. Esta interacción en dichas estructuras se estudia, tanto desde un punto de vista macroscópico (diseño de estructuras para el confinamiento y guiado de ondas electromagnéticas y elásticas) como microscópico (estudio de la interacción fotón-fonón en microcavidades y desarrollo teórico de modelos cuánticos para la comprensión de dicha interacción).
Escalante Fernández, JM. (2013). Theoretical study of light and sound interaction in phoxonic crystal structures [Tesis doctoral no publicada]. Universitat Politècnica de València. https://doi.org/10.4995/Thesis/10251/33754
TESIS
APA, Harvard, Vancouver, ISO, and other styles
4

Chibani, Haytham [Verfasser], Gerhard [Akademischer Betreuer] Rempe, and Rudolf [Akademischer Betreuer] Gross. "Photon Blockade with Memory and Slow Light using a Single Atom in an Optical Cavity / Haytham Chibani. Betreuer: Gerhard Rempe. Gutachter: Rudolf Gross ; Gerhard Rempe." München : Universitätsbibliothek der TU München, 2016. http://d-nb.info/1099594634/34.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Chibani, Haytham Verfasser], Gerhard [Akademischer Betreuer] Rempe, and Rudolf [Akademischer Betreuer] [Gross. "Photon Blockade with Memory and Slow Light using a Single Atom in an Optical Cavity / Haytham Chibani. Betreuer: Gerhard Rempe. Gutachter: Rudolf Gross ; Gerhard Rempe." München : Universitätsbibliothek der TU München, 2016. http://nbn-resolving.de/urn:nbn:de:bvb:91-diss-20160428-1293639-1-2.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

Zang, Xiaorun. "Lumière lente dans les guides à cristaux photoniques pour l'interaction renforcée avec la matière." Thesis, Bordeaux, 2015. http://www.theses.fr/2015BORD0172/document.

Full text
Abstract:
Dans cette thèse, nous avons étudié l'impact considérable de désordre aléatoire sur le transport de la lumière lente dans les guides à cristaux photoniques 1D, c'est-à-dire la localisation de la lumière. Les mesures en champ proche, les simulations statistiques et le modèle théorique révèlent l'existence d'une limite inférieure de l’extension spatiale des modes localisés. Nous avons également présenté que le niveau de désordre et l’extension spatiale de mode localisé individuelle sont liés par la masse effective de photons plutôt que la vitesse de groupe considérant en général.Deuxièmement, les systèmes hybrides d'atomes froids et des guides à cristaux photoniques ont été reconnus comme un approche prometteuse pour l'ingénierie grande interaction lumière-matière au niveau des atomes et des photons individuels. Dans cette thèse, nous avons étudié la physique, à savoir le transport de la lumière dans des guides de nanophotonique périodiques couplées à des atomes à deux niveaux. Notre expression semi-analytique développée est générale et peut rapidement caractériser le couplage entre les atomes froids et les photons guidées. Pour surmonter les difficultés techniques considérables existent dans les systèmes hybrides atomique et photonique, nous avons conçu un guide nanophotonique qui supporte un mode de Bloch lente guidée avec grande queue évanescente dans l'espace libre pour les atomes froids de piégeage. Pour adapter précisément la région de fréquence de la lumière lente du mode guidé à la ligne de transition atomique, nous avons conçu la bande photonique et de la courbe de dispersion du mode guidé afin que la force de l'interaction est robuste contre imprévisible fabrication imperfection
In this thesis, we firstly investigated the striking influence of random disorder on light transport near band edges in one dimensional photonic crystal wave guides, i.e. light localization. Near-field measurements, statistical simulations and theoretical model revealed the existence of a lower bound for the spatial extent of localized modes. We also showed that the disorder level and the spatial extent of individual localized mode is linked by the photon effective mass rather than the generally considered group velocity. Secondly, hybrid cold atoms and photonic crystal wave guides system have been recognized as a promising paradigm for engineering large light-matter interaction at single atoms and photons level. In this thesis, we studied the basic physics, i.e. light transport in periodic nanophotonic wave guides coupled to two-level atoms. Our developed general semi-analytical expression can quickly characterize the coupling between cold atoms and guided photons. Aim to overcome the significant technical challenges existed for developing hybrid atom-photonic systems, we designed a nanophotonic waveguide, which supports a slow guided Bloch mode with large evanescent tail in free space for cold atoms trapping (release the limitation imposed by Casmir Polder force and technical challenge of nanoscale manipulation of cold atoms). To match precisely the slow light region of the guided mode to the atomic transition line, we carefully engineered the photonic band and the dispersion curve (i.e.flatness) of the guided mode so that the interaction strength is robust against unpredictable fabrication imperfection
APA, Harvard, Vancouver, ISO, and other styles
7

Lauprêtre, Thomas. "Processus cohérents et applications des phénomènes de lumière lente et rapide dans l'hélium métastable à température ambiante." Phd thesis, Université Paris Sud - Paris XI, 2012. http://tel.archives-ouvertes.fr/tel-00772326.

Full text
Abstract:
L'interaction entre des champs électromagnétiques et des systèmes à plusieurs niveaux peut donner lieu à différents processus cohérents. La transparence électromagnétiquement induite (EIT) ou les oscillations cohérentes de populations (CPO) sont des phénomènes résonnants ayant pour conséquence d'annuler l'absorption du système pour un champ sonde. L'EIT se produit dans les systèmes à trois niveaux et met en jeu une cohérence entre niveaux non couplés optiquement, alors que les systèmes à deux niveaux suffisent pour faire apparaître le CPO qui ne met pas en jeu la dynamique des cohérences.Il est possible dans un milieu constitué d'atomes d'hélium métastable à température ambiante d'extraire un système à trois niveaux en Λ qui, lorsqu'il est excité par des polarisations circulaires, fait apparaître des fenêtres EIT de l'ordre de quelques dizaines de kHz de large. Lorsque ce système est excité par des polarisations linéaires et soumis à un champ magnétique de faible amplitude, c'est l'association des deux phénomènes de CPO et d'EIT qui détermine la réponse du système. Une fenêtre de transparence CPO de quelques dizaines de kHz de large a en particulier été observée.Ce type de phénomènes résonnants est associé à de grandes variations de l'indice de réfraction avec la fréquence du champ sonde, ayant pour conséquence de profondes modifications de la vitesse de groupe d'une impulsion se propageant dans le milieu. Notre système expérimental permet ainsi d'observer de la lumière lente, de la lumière rapide ainsi que des vitesses de groupe négatives. L'insertion de tels milieux dispersifs en cavité optique a été suggérée pour augmenter la précision de senseurs comme les gyroscopes lasers, mais leur bruit fondamental dépend de la durée de vie des photons dans la cavité. C'est pourquoi l'influence des milieux hautement dispersifs sur la durée de vie des photons dans une cavité est étudiée expérimentalement et théoriquement.
APA, Harvard, Vancouver, ISO, and other styles
8

Petrov, Alexander. "Slow light photonic crystal line-defect waveguides." Göttingen Cuvillier, 2007. http://d-nb.info/989861244/04.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

Schulz, Sebastian Andreas. "Propagation loss in slow light photonic crystal waveguides." Thesis, University of St Andrews, 2012. http://hdl.handle.net/10023/2837.

Full text
Abstract:
The field of nanophotonics is a major research topic, as it offers potential solutions to important challenges, such as the creation of low power, high bandwidth interconnects or optical sensors. Within this field, resonant structures and slow light waveguides are used to improve device performance further. Photonic crystals are of particular interest, as they allow the fabrication of a wide variety of structures, including high Q-factor cavities and slow light waveguides. The high scattering loss of photonic crystal waveguides, caused by fabrication disorder, however, has so far proven to be the limiting factor for device applications. In this thesis, I present a detailed study of propagation loss in slow light photonic crystal waveguides. I examine the dependence of propagation loss on the group index, and on disorder, in more depth than previous work by other authors. I present a detailed study of the relative importance of different components of the propagation loss, as well as a calculation method for the average device properties. A new calculation method is introduced to study different device designs and to show that photonic crystal waveguide propagation loss can be reduced by device design alone. These “loss engineered” waveguides have been used to demonstrate the lowest loss photonic crystal based delay line (35 dB/ns) with further improvements being predicted (< 20 dB/ns). Novel fabrication techniques were investigated, with the aim of reducing fabrication disorder. Initial results showed the feasibility of a silicon anneal in a nitrogen atmosphere, however poor process control led to repeatability issues. The use of a slow-fast-slow light interface allowed for the fabrication of waveguides spanning multiple writefields of the electron-beam lithography tool, overcoming the problem of stitching errors. The slow-fast-slow light interfaces were combined with loss engineering waveguide designs, to achieve an order of magnitude reduction in the propagation loss compared to a W1 waveguide, with values as low as 130 dB/cm being achieved for a group index around 60.
APA, Harvard, Vancouver, ISO, and other styles
10

Micó, Reche Mª del Mar. "Photo-Fenton and Slow Sand Filtration coupling for hydroponics water reuse." Doctoral thesis, Universitat de Barcelona, 2013. http://hdl.handle.net/10803/128571.

Full text
Abstract:
The collaboration between the University of Barcelona and Acciona Agua was focused on optimizing greenhouses hydric resources. The functionality of a combined treatment had to be assessed, when applied to the discard stream of a recycling system of the Advanced Greenhouse leachates. The coupling consisted on an Advanced Oxidation Processes (AOP), photo-Fenton, based on hydroxyl radical oxidative potential, produced by the interaction between Fe2+ and H2O2, and a slow sand filtration column acting as a bioreactor. The recycling system will require the synergy of chemical and biological processes to be able to work efficiently with the particular characteristics of greenhouses effluents: high salinity content and the presence of pesticides. Two recycling strategies proposed by the project defined two conductivity thresholds that the coupled system should be able to cope with. The first strategy proposed a simple semi-closed system that recycled nutrient solution from the hydroponics crops until a maximum value of 11 mS•cm(-1), phytotoxicity limit. Part of the current was then diverted to be treated by the integrated system. The second strategy introduced reverse osmosis membrane technology that concentrated that diverted stream, sending the permeate for its reuse directly to the greenhouse, while the brine had to be treated by the coupled process. In this case the maximum level of salinity in the effluents could reach conductivities close to those for seawater, around 50 mS•cm(-1). The performance of photo-Fenton reaction was essayed in order to improve the knowledge regarding this treatment technique. On the first place, this AOP and the ozonation process were compared. Results shown that increasing toxicity of ozonation effluents confirmed the choice of photo-Fenton as the most adequate treatment for pesticide polluted effluents. Experimental design criteria allowed then to determine optimal working conditions depending on the content of the reaction media, and enabled to prove the existence of endogenous catalyst inhibition in the presence of fosetyl-Al. Salinity essays were finally performed, yielding positive results even for highest conductivity effluents. Those positive results were also reflected in the increase of the biodegradability of the treated effluents, what leaded to the next step of the research. Biocompatibility of pretreated effluents was essayed by means of sequencing batch reactors (SBR). These devices were used to show how photo-Fenton indeed increased biodegradability of the effluents, and how it grown until a certain point when more hydrogen peroxide did not lead to better results. They were also utilized to assess the biocompatibility of high salinity pretreated effluents, as a first step towards the coupling with the slow sand filtration at high conductivities. Results obtained were extremely encouraging, given that even for the highest salinity concentrations (10 and 50 mS•cm(-1)), the performance of the bioreactor achieved an organic content reduction for more than 80% of the loaded concentration, which compared to the 10-20% removal achieved by photo-Fenton, justifies the need of combining both treatments. Guided by those positive results, the load of the slow sand filtration column with different salinity pretreated effluents was performed. Also positive results were obtained. The achieved elimination of the organic content was more than 75% when loaded with 10 mS•cm-1 effluent, and the refractory fraction (the remaining organic matter that cannot be oxidized either by photo-Fenton reaction or by the biomass metabolism) was the lowest also for this high conductivity. Molecular biology tools, MTBs, used in this thesis were based on cloning and sequencing techniques of 16S rRNA genes. They allowed characterizing the bacterial population of one of the assessed SBRs and of the different loading stages of the slow sand filtration column. They showed how with the increase of salinity, the population in the slow sand filtration column loosed diversity, despite the fact that the performance of the column was still proficient. This fact stated how a very different microbial consortium could be developing the same functions as others. According to obtained results, it could be finally concluded that the coupling between photo-Fenton reaction and slow sand filtration column could be an effective treatment alternative for implementing the recycling strategies of hydroponics greenhouse leachates proposed by CENIT-MEDIODIA Project. For its part, MBTs were revealed as powerful tools to characterize microbial population and increase the understanding of the bioreactions taking part in bioremediation.
Esta tesis se enmarca en la colaboración entre el Departamento de Ingeniería Química de la Universidad de Barcelona y el Departamento de I+D de Acciona Agua S.A.U, en el marco del Proyecto CENIT- MEDIODIA (2007-2010). Esta iniciativa la componen un consorcio de empresas un consorcio de empresas y centros de investigación que unieron esfuerzos de innovación en el desarrollo de un nuevo concepto de Invernaderos Hidropónicos Avanzados. La colaboración entre la Universidad de Barcelona y Acciona Agua se centró en la optimización de los recursos hídricos de dichos invernaderos. Así se evaluó la funcionalidad de un tratamiento combinado que integrara un Proceso de Oxidación Avanzada (reacción foto-Fenton), y un reactor biológico (columna de arena de filtración lenta), aplicados a la corriente de desecho de un sistema de recirculación de lixiviados provenientes del nombrado invernadero avanzado. Las particularidades de dicho sistema de reciclado harían que el sistema combinado tuviese que trabajar con efluentes con alto contenido en pesticidas (metomilo, imidacloprid y fosetyl-Al, fueron escogidos para simular los lixiviados de invernadero) y conductividades entre 11 y 50 mS•cm-1. De este modo el principal objetivo del proceso integrado sería el de conseguir la máxima eliminación de los compuestos xenobióticos y de la carga orgánica que los acompañe en el efluente tratado. Así pues, la experimentación se llevó a cabo frente a tres aspectos relacionados con el sistema combinado: estudio de la reacción foto-Fenton, ensayos con biorreactores, y empleo de herramientas de biología molecular (MBT, en sus siglas en inglés) aplicadas a la caracterización de la biomasa desarrollada en los biorreactores ensayados. Según los resultados obtenidos, se llegó a la conclusión de que la combinación de la reacción foto-Fenton y la columna de filtración lenta podría ser una alternativa de tratamiento eficaz para la aplicación de las estrategias de reciclaje de los lixiviados hidroponía presentadas en Proyecto CENIT-MEDIODIA. Además, MBT se revelaron como poderosas herramientas para caracterizar la población microbiana de distintos biorreactores y las funciones que desempeñan.
APA, Harvard, Vancouver, ISO, and other styles

Books on the topic "Slow photon"

1

Slow light: Invisibility, teleportation, and other mysteries of light. London: Imperial College Press, 2011.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
2

Jean, Snow, ed. Arcade Mania. New York: Kodansha America, 2008.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
3

Shore, Bruce W. Our Changing Views of Photons. Oxford University Press, 2020. http://dx.doi.org/10.1093/oso/9780198862857.001.0001.

Full text
Abstract:
This book describes the changing views of the physics community toward photons, and how photons are viewed today in several contexts. The first portion, a ninechapter Memoir with few equations and many definitions, explains the changing view of physicists toward radiation and its wave-particle photons, written for those with interest but possibly without technical background. It gives operational definitions that have been used for photons and their association with quantum-state manipulations that include Quantum Information, astronomical sources and crowds of photons, the boxed fields of cavity Quantum Electrodynamics It defines, qualitatively, the historical photons of Planck, Einstein, Compton, and Bohr, the later photons of Dirac, Feynman, and Glauber, and the photon constituents of the Standard Model of Particle Physics. It points to contemporary photons as causers of change to atoms, as carriers of messages, and as subject to controllable creation and alteration. A second portion, of three tutorial appendices, explains the mathematical background of quantum theory and radiation needed by those whose profession involves photonics and who therefore want more detailed understanding of the Memoir portion: quantum theory and the Schrodinger equation for quantum-state manipulation; Maxwell equations for electromagnetism with wave modes that become photons through a quantization postulate, possibly exhibiting quantum entanglement; and the coupling of atoms and fields to create quasiparticles that are seen as slow and stored light pulses. As with other Memoirs, the present book has idiosyncrasies of the author. Most notably, on the opening page of each chapter, and at the end of the book, is a cartoon drawn by the author, as a grad student, that reflects the changing views of a PhD aspirant toward the grad school experience as he progressed through the graduate school of MIT in the 1950s.
APA, Harvard, Vancouver, ISO, and other styles
4

Edwards, Susana. Ultimate Sloth Photo Book: Looking Through the Eyes of These Tropical Rainforest Very Slow Mammal. Independently Published, 2019.

Find full text
APA, Harvard, Vancouver, ISO, and other styles

Book chapters on the topic "Slow photon"

1

Andriamonje, S., H. J. Andrä, and A. Simionovici. "Two electron-one photon X-ray emission in slow collisions between fully stripped ions and solids." In Atomic Physics of Highly Charged Ions, 349–50. Berlin, Heidelberg: Springer Berlin Heidelberg, 1991. http://dx.doi.org/10.1007/978-3-642-76658-9_110.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Zang, Hui. "Photonic Slot Routing." In WDM Mesh Networks, 133–64. Boston, MA: Springer US, 2003. http://dx.doi.org/10.1007/978-1-4615-0341-5_8.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Wedzinga, Gosse. "Basic Photonic Slot Routing Architecture." In Photonic Slot Routing in Optical Transport Networks, 13–43. Boston, MA: Springer US, 2003. http://dx.doi.org/10.1007/978-1-4615-0317-0_2.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Wedzinga, Gosse. "Upgradable Photonic Slot Routing Architecture." In Photonic Slot Routing in Optical Transport Networks, 73–97. Boston, MA: Springer US, 2003. http://dx.doi.org/10.1007/978-1-4615-0317-0_4.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Chlamtac, Imrich, Andrea Fumagalli, and Viktória Elek. "Performance of photonic slot routing networks." In Multichannel Optical Networks: Theory and Practice, 227–38. Providence, Rhode Island: American Mathematical Society, 1998. http://dx.doi.org/10.1090/dimacs/046/16.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

Sukhorukov, Andrey A. "Spatial Switching of Slow Light in Periodic Photonic Structures." In Springer Series in Optical Sciences, 55–70. Berlin, Heidelberg: Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/978-3-642-02066-7_4.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Wedzinga, Gosse. "Introduction." In Photonic Slot Routing in Optical Transport Networks, 1–11. Boston, MA: Springer US, 2003. http://dx.doi.org/10.1007/978-1-4615-0317-0_1.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

Wedzinga, Gosse. "Performance of Basic-PSR Networks." In Photonic Slot Routing in Optical Transport Networks, 45–72. Boston, MA: Springer US, 2003. http://dx.doi.org/10.1007/978-1-4615-0317-0_3.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

Wedzinga, Gosse. "Improved TDM Transmission Frame Construction." In Photonic Slot Routing in Optical Transport Networks, 99–129. Boston, MA: Springer US, 2003. http://dx.doi.org/10.1007/978-1-4615-0317-0_5.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Wedzinga, Gosse. "Selection of Wavelength-Sensitive Nodes." In Photonic Slot Routing in Optical Transport Networks, 131–51. Boston, MA: Springer US, 2003. http://dx.doi.org/10.1007/978-1-4615-0317-0_6.

Full text
APA, Harvard, Vancouver, ISO, and other styles

Conference papers on the topic "Slow photon"

1

Solli, D. R., J. J. Morehead, C. F. McCormick, and J. M. Hickmann. "Revisiting Photon Tunneling Through Finite 1D Dielectric Photonic Crystals." In Slow and Fast Light. Washington, D.C.: OSA, 2008. http://dx.doi.org/10.1364/sl.2008.swc6.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Polyakov, Sergey V., David Papoular, Daniel Josell, Paul Lett, Colin McCormick, and Alan Migdall. "Photon Tunneling Through Evanescent Gaps And Bandgaps." In Slow and Fast Light. Washington, D.C.: OSA, 2007. http://dx.doi.org/10.1364/sl.2007.swa3.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Möller, B. M., U. Woggon, and M. V. Artemyev. "Extended and Localized Photon States in 1D-Coupled Resonators." In Slow and Fast Light. Washington, D.C.: OSA, 2006. http://dx.doi.org/10.1364/sl.2006.me3.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Polyakov, Sergey, Natalia B. Rutter, Natalia Malkova, Garnett Bryant, Paul D. Lett, and Alan Migdall. "Single Photon Traversal of Dielectric Bandgaps: Apparent Superluminality, Tunneling, and Surface Modes*." In Slow and Fast Light. Washington, D.C.: OSA, 2009. http://dx.doi.org/10.1364/sl.2009.stuc2.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Hofferberth, Sebastian, Thibault Peyronel, Qiyu Liang, Alexander Zibrov, Vladan Vuletic, and Mikhail Lukin. "Nonlinear optics at the single-photon level inside a hollow core fiber." In Slow and Fast Light. Washington, D.C.: OSA, 2011. http://dx.doi.org/10.1364/sl.2011.slwa1.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

Wisniewski-Barker, Emma, Graham Gibson, Sonja Franke-Arnold, Robert Boyd, and Miles Padgett. "Slow Darkness and Rotary Photon Drag." In Frontiers in Optics. Washington, D.C.: OSA, 2012. http://dx.doi.org/10.1364/fio.2012.fth1e.2.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Chen, Yuping, Zhimin Shi, Petros Zerom, and Robert W. Boyd. "Slow Light with Gain Induced by Three-Photon Effect in Strongly Driven Two-level Atoms." In Slow and Fast Light. Washington, D.C.: OSA, 2006. http://dx.doi.org/10.1364/sl.2006.me1.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

Nagasawa, Yutaka. "Ultrafast Dynamics in Low Temperature Saccharide Glasses: A Photon Echo Study." In SLOW DYNAMICS IN COMPLEX SYSTEMS: 3rd International Symposium on Slow Dynamics in Complex Systems. AIP, 2004. http://dx.doi.org/10.1063/1.1764154.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

Dahl, K., L. Spani Molella, R. H. Rinkleff, and K. Danzmann. "Inversion of the Coupling Absorption at the Two-Photon Resonance in a Coupling-Probe-Spectroscopy Experiment." In Slow and Fast Light. Washington, D.C.: OSA, 2008. http://dx.doi.org/10.1364/sl.2008.jmb23.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Ham, B. S., and J. Hahn. "Photon logic gate using ultra slow light." In SPIE Europe Optics + Optoelectronics, edited by Mario Bertolotti. SPIE, 2009. http://dx.doi.org/10.1117/12.819388.

Full text
APA, Harvard, Vancouver, ISO, and other styles

Reports on the topic "Slow photon"

1

Gal'perin, Yu M., V. G. Karpov, and Володимир Миколайович Соловйов. Density of vibrational states in glasses. Springer, November 1988. http://dx.doi.org/10.31812/0564/1005.

Full text
Abstract:
A theory of the vibrational spectra of glasses, based on allowance for the statistical fluctuations of the local elastic constants, is proposed. The existence is established of two characteristic energies h, and h, , dividing the spectrum into regions of qualitatively different behavior of the density of states n (h). At low frequencices w 4 w, the increase of the density of states is determined by the additive contributions of phonons and mutually noninteracting quasilocal vibrations in random soft atomic potentials in the glass. In the intermediate region w , 5 w 5 w, the quasilocal vibrations interact strongly with phonons, and this makes their contributions superadditive. For w > w, the growth of n (h) slows down. As a result, n (h) increases at first more rapidly and then more slowly than the Debye density of states. An analytical expression for n (h) is obtained in the T-matrix formalism in the region w <a,, including the region of strong scattering. A numerical calculation of n (h) is performed in the coherent-potential approximation. The theory predicts qualitatively universal behavior of n (h) in different glasses.
APA, Harvard, Vancouver, ISO, and other styles
We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!

To the bibliography