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Journal articles on the topic 'Slow photon'

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Author: Grafiati

Published: 10 December 2022

Last updated: 28 January 2023

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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.

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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.

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By separating the photons from slow and fast decays of single- and multi-excitons in a time gated 2^nd 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.

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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.

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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.

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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.

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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.

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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.

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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.

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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.

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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.

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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.

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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 .

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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.

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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.

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11

Siverns, J. D., J. Hannegan, and Q. Quraishi. "Demonstration of slow light in rubidium vapor using single photons from a trapped ion." Science Advances 5, no. 10 (October 2019): eaav4651. http://dx.doi.org/10.1126/sciadv.aav4651.

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Practical implementation of quantum networks is likely to interface different types of quantum systems. Photonically linked hybrid systems, combining unique properties of each constituent system, have typically required sources with the same photon emission wavelength. Trapped ions and neutral atoms both have compelling properties as nodes and memories in a quantum network but have never been photonically linked because of vastly different operating wavelengths. Here, we demonstrate the first interaction between neutral atoms and photons emitted from a single trapped ion. We use slow light in 87Rb vapor to delay photons originating from a trapped 138Ba+ ion by up to 13.5 ± 0.5 ns, using quantum frequency conversion to overcome the frequency difference between the ion and neutral atoms. The delay is tunable and preserves the temporal profile of the photons. This result showcases a hybrid photonic interface usable as a synchronization tool—a critical component in any future large-scale quantum network.

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12

Zhu, Shilin, Zexiang Xu, Tiancheng Sun, Alexandr Kuznetsov, Mark Meyer, Henrik Wann Jensen, Hao Su, and Ravi Ramamoorthi. "Photon-Driven Neural Reconstruction for Path Guiding." ACM Transactions on Graphics 41, no. 1 (February 28, 2022): 1–15. http://dx.doi.org/10.1145/3476828.

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Although Monte Carlo path tracing is a simple and effective algorithm to synthesize photo-realistic images, it is often very slow to converge to noise-free results when involving complex global illumination. One of the most successful variance-reduction techniques is path guiding, which can learn better distributions for importance sampling to reduce pixel noise. However, previous methods require a large number of path samples to achieve reliable path guiding. We present a novel neural path guiding approach that can reconstruct high-quality sampling distributions for path guiding from a sparse set of samples, using an offline trained neural network. We leverage photons traced from light sources as the primary input for sampling density reconstruction, which is effective for challenging scenes with strong global illumination. To fully make use of our deep neural network, we partition the scene space into an adaptive hierarchical grid, in which we apply our network to reconstruct high-quality sampling distributions for any local region in the scene. This allows for effective path guiding for arbitrary path bounce at any location in path tracing. We demonstrate that our photon-driven neural path guiding approach can generalize to diverse testing scenes, often achieving better rendering results than previous path guiding approaches and opening up interesting future directions.

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13

Keung Chan, Tsang, Alejandro Benitez-Llambay, Tom Theuns, and Carlos Frenk. "Simulations of the reionization of the clumpy intergalactic medium with a novel particle-based two-moment radiative transfer scheme." Proceedings of the International Astronomical Union 16, S362 (June 2020): 15–20. http://dx.doi.org/10.1017/s1743921322001235.

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AbstractThe progress of cosmic reionization depends on the presence of over-dense regions that act as photon sinks. Such sinks may slow down ionization fronts as compared to a uniform intergalactic medium (IGM) by increasing the clumping factor. We present simulations of reionization in a clumpy IGM resolving even the smallest sinks. The simulations use a novel, spatially adaptive and efficient radiative transfer implementation in the SWIFT SPH code, based on the two-moment method. We find that photon sinks can increase the clumping factor by a factor of ∼10 during the first ∼100 Myrs after the passage of an ionization front. After this time, the clumping factor decreases as the smaller sinks photoevaporate. Altogether, photon sinks increase the number of photons required to reionize the Universe by a factor of η ∼2, as compared to the homogeneous case. The value of η also depends on the emissivity of the ionizing sources.

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14

Liao, Chien-Sheng, Pu Wang, Ping Wang, Junjie Li, Hyeon Jeong Lee, Gregory Eakins, and Ji-Xin Cheng. "Spectrometer-free vibrational imaging by retrieving stimulated Raman signal from highly scattered photons." Science Advances 1, no. 9 (October 2015): e1500738. http://dx.doi.org/10.1126/sciadv.1500738.

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In vivo vibrational spectroscopic imaging is inhibited by relatively slow spectral acquisition on the second scale and low photon collection efficiency for a highly scattering system. Recently developed multiplex coherent anti-Stokes Raman scattering and stimulated Raman scattering techniques have improved the spectral acquisition time down to microsecond scale. These methods using a spectrometer setting are not suitable for turbid systems in which nearly all photons are scattered. We demonstrate vibrational imaging by spatial frequency multiplexing of incident photons and single photodiode detection of a stimulated Raman spectrum within 60 μs. Compared to the spectrometer setting, our method improved the photon collection efficiency by two orders of magnitude for highly scattering specimens. We demonstrated in vivo imaging of vitamin E distribution on mouse skin and in situ imaging of human breast cancerous tissues. The reported work opens new opportunities for spectroscopic imaging in a surgical room and for development of deep-tissue Raman spectroscopy toward molecular level diagnosis.

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15

Lebrun, Delphine Misao, and Lars österlund. "Demonstration of Slow Photon Chemistry on Multilayer Inverse Opals." Science of Advanced Materials 9, no. 11 (November 1, 2017): 1947–52. http://dx.doi.org/10.1166/sam.2017.2833.

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16

Franke-Arnold, S., G. Gibson, R. W. Boyd, and M. J. Padgett. "Rotary Photon Drag Enhanced by a Slow-Light Medium." Science 333, no. 6038 (June 30, 2011): 65–67. http://dx.doi.org/10.1126/science.1203984.

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17

Toumazatou, Alexia, Michalis K. Arfanis, Petros-Andreas Pantazopoulos, Athanassios G. Kontos, Polycarpos Falaras, Nikolaos Stefanou, and Vlassis Likodimos. "Slow-photon enhancement of dye sensitized TiO 2 photocatalysis." Materials Letters 197 (June 2017): 123–26. http://dx.doi.org/10.1016/j.matlet.2017.03.128.

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18

Durand, P. E., G. Nogues, V. Bernard, A. Amy-Klein, and Ch Chardonnet. "Slow-molecule detection in Doppler-free two-photon spectroscopy." Europhysics Letters (EPL) 37, no. 2 (January 10, 1997): 103–8. http://dx.doi.org/10.1209/epl/i1997-00118-y.

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19

Nyström, B., R. Hutton, S. Huldt, F. Heijkenskjöld, A. Langereis, M. O. Larsson, M. Wang, and A. Wännström. "Photon spectroscopy of slow Heq+ + He (q = 1,2) collisions." Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms 98, no. 1-4 (May 1995): 62–64. http://dx.doi.org/10.1016/0168-583x(95)00033-x.

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20

Jovic, Vedran, Hicham Idriss, and Geoffrey I. N. Waterhouse. "Slow photon amplification of gas-phase ethanol photo-oxidation in titania inverse opal photonic crystals." Chemical Physics 479 (November 2016): 109–21. http://dx.doi.org/10.1016/j.chemphys.2016.10.001.

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21

Feng, Xiaoyi, Kai Kang, Yang Wu, Jinlong Zhang, and Lingzhi Wang. "Exploring the slow-light effect of Pt/TiO₂–SiO₂ inverse opal on photocatalytic nonoxidative coupling of methane." Chemical Communications 57, no. 96 (2021): 13000–13003. http://dx.doi.org/10.1039/d1cc04663b.

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22

Ando, A., S. Daté, M. G. Fedurin, M. Hara, H. Kamitsubo, A. V. Kiselev, G. N. Kulipanov, et al. "Proposal of a high-field superconducting wiggler for a slow positron source at SPring-8." Journal of Synchrotron Radiation 5, no. 3 (May 1, 1998): 360–62. http://dx.doi.org/10.1107/s0909049597018773.

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A low-energy positron beam is a unique probe of materials. In high-energy electron and positron storage rings it is possible to generate intense synchrotron radiation with a photon energy of 1–3 MeV by installing a high-field (8–10 T) superconducting wiggler. High-energy photons are converted to low-energy positrons by using a suitable target–moderator system. For an 8 GeV electron storage ring at a beam current of 100 mA, final yields are estimated to be about 108–1010 slow-e+ s−1 or larger depending on the moderation efficiency, with the size of the positron source 101–102 cm2. In the present work a wiggler magnetic system of 10 T is proposed. The main parameters of the superconducting wiggler are presented.

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23

Lauprêtre, T., C. Proux, R. Ghosh, S. Schwartz, F. Goldfarb, and F. Bretenaker. "Photon lifetime in a cavity containing a slow-light medium." Optics Letters 36, no. 9 (April 21, 2011): 1551. http://dx.doi.org/10.1364/ol.36.001551.

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24

Magazú, S., G. Maisano, F. Mallamace, P. Migliardo, F. Aliotta, and C. Vasi. "Slow relaxation processes in molten ZnCl2studied by photon correlation spectroscopy." Philosophical Magazine B 56, no. 2 (August 1987): 155–65. http://dx.doi.org/10.1080/13642818708208522.

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25

Steger, Mark, Chitra Gautham, David W. Snoke, Loren Pfeiffer, and Ken West. "Slow reflection and two-photon generation of microcavity exciton–polaritons." Optica 2, no. 1 (January 12, 2015): 1. http://dx.doi.org/10.1364/optica.2.000001.

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26

Zheng, Yujun, and Frank L. H. Brown. "Single molecule photon emission statistics in the slow modulation limit." Journal of Chemical Physics 121, no. 16 (2004): 7914. http://dx.doi.org/10.1063/1.1795671.

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27

Shpyrko, Oleg G. "X-ray photon correlation spectroscopy." Journal of Synchrotron Radiation 21, no. 5 (August 27, 2014): 1057–64. http://dx.doi.org/10.1107/s1600577514018232.

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In recent years, X-ray photon correlation spectroscopy (XPCS) has emerged as one of the key probes of slow nanoscale fluctuations, applicable to a wide range of condensed matter and materials systems. This article briefly reviews the basic principles of XPCS as well as some of its recent applications, and discusses some novel approaches to XPCS analysis. It concludes with a discussion of the future impact of diffraction-limited storage rings on new types of XPCS experiments, pushing the temporal resolution to nanosecond and possibly even picosecond time scales.

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28

POUTANEN, J., and B. E. STERN. "PHOTON BREEDING MECHANISM IN RELATIVISTIC JETS: ASTROPHYSICAL IMPLICATIONS." International Journal of Modern Physics D 17, no. 09 (September 2008): 1619–28. http://dx.doi.org/10.1142/s0218271808013224.

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Photon breeding in relativistic jets involves multiplication of high-energy photons propagating from the jet into the external environment and back, with the conversion into electron-positron pairs. The exponential growth of the energy density of these photons is a supercritical process powered by the bulk energy of the jet. The efficient deceleration of the jet outer layers creates a structured jet morphology with a fast spine and slow sheath. In initially fast and high-power jets even the spine can be decelerated efficiently leading to very high radiative efficiencies of conversion of the jet bulk energy into radiation. The decelerating, structured jets have angular distribution of radiation significantly broader than that predicted by a simple blob model with a constant Lorentz factor. This reconciles the discrepancy between the high Doppler factors determined by the fits to the spectra of TeV blazars and the low apparent velocities observed at VLBI scales as well as the low jet Lorentz factors required by the observed statistics and luminosity ratio of Fanaroff-Riley I radio galaxies and BL Lac objects. Photon breeding produces a population of high-energy leptons in agreement with the constraints on the electron injection function required by spectral fits of the TeV blazars. Relativistic pairs created outside the jet and emitting gamma-rays by the inverse Compton process might explain the relatively high level of TeV emission from the misaligned jet in the radio galaxies. The mechanism reproduces basic spectral features observed in blazars including the blazar sequence (shift of the spectral peaks towards lower energies with increasing luminosity). The mechanism is very robust and can operate in various environments characterized by the high photon density.

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29

Papadakis, Dimitrios, Angeliki Diamantopoulou, Petros Andreas Pantazopoulos, Dimitrios Palles, Elias Sakellis, Nikos Boukos, Nikolaos Stefanou, and Vlassis Likodimos. "Nanographene oxide–TiO2 photonic films as plasmon-free substrates for surface-enhanced Raman scattering." Nanoscale 11, no. 44 (2019): 21542–53. http://dx.doi.org/10.1039/c9nr07680h.

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Nanographene oxide–TiO₂ photonic crystal films are demonstrated as sensitive, recyclable SERS substrates that integrate slow-photon amplification effects with the high adsorption capacity of GO nanosheets.

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30

Kawata, Satoshi. "Plasmonics for Nanoimaging and Nanospectroscopy." Applied Spectroscopy 67, no. 2 (February 2013): 117–25. http://dx.doi.org/10.1366/12-06861.

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The science of surface plasmon polaritons, known as “plasmonics,” is reviewed from the viewpoint of applied spectroscopy. In this discussion, noble metals are regarded as reservoirs of photons exhibiting the functions of photon confinement and field enhancement at metallic nanostructures. The functions of surface plasmons are described in detail with an historical overview, and the applications of plasmonics to a variety of industry and sciences are shown. The slow light effect of surface plasmons is also discussed for nanoimaging capability of the near-field optical microscopy and tip-enhanced Raman microscopy. The future issues of plasmonics are also shown, including metamaterials and the extension to the ultraviolet and terahertz regions.

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31

Maiti, Abhishek, and Amlan J. Pal. "Carrier recombination in CH₃NH₃PbI₃: why is it a slow process?" Reports on Progress in Physics 85, no. 2 (February 1, 2022): 024501. http://dx.doi.org/10.1088/1361-6633/ac4be9.

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Abstract In methylammonium lead iodide (MAPbI3), a slow recombination process of photogenerated carriers has often been considered to be the most intriguing property of the material resulting in high-efficiency perovskite solar cells. In spite of intense research over a decade or so, a complete understanding of carrier recombination dynamics in MAPbI3 has remained inconclusive. In this regard, several microscopic processes have been proposed so far in order to explain the slow recombination pathways (both radiative and non-radiative), such as the existence of shallow defects, a weak electron–phonon coupling, presence of ferroelectric domains, screening of band-edge charges through the formation of polarons, occurrence of the Rashba splitting in the band(s), and photon-recycling in the material. Based on the up-to-date findings, we have critically assessed each of these proposals/models to shed light on the origin of a slow recombination process in MAPbI3. In this review, we have presented the interplay between the mechanisms and our views/perspectives in determining the likely processes, which may dictate the recombination dynamics in the material. We have also deliberated on their interdependences in decoupling contributions of different recombination processes.

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32

Cui, Xiaofeng, Yajun Wang, Guiyuan Jiang, Zhen Zhao, Chunming Xu, Yuechang Wei, Aijun Duan, Jian Liu, and Jinsen Gao. "A photonic crystal-based CdS–Au–WO3 heterostructure for efficient visible-light photocatalytic hydrogen and oxygen evolution." RSC Adv. 4, no. 30 (2014): 15689–94. http://dx.doi.org/10.1039/c4ra01415d.

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Photonic crystal-based CdS–Au–WO₃ heterostructure that integrates slow photon effect and superior electron transfer exhibits efficient photocatalytic H₂ and O₂ evolution.

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33

Asami, A., A. Enomoto, H. Kobayashi, Toshikazu Kurihara, K. Nakahara, and T. Shidara. "A Slow-Positron Source Project Using the Photon Factory Electron Linac." Materials Science Forum 105-110 (January 1992): 1833–36. http://dx.doi.org/10.4028/www.scientific.net/msf.105-110.1833.

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34

Curti, Mariano, Cecilia B. Mendive, María A. Grela, and Detlef W. Bahnemann. "Stopband tuning of TiO 2 inverse opals for slow photon absorption." Materials Research Bulletin 91 (July 2017): 155–65. http://dx.doi.org/10.1016/j.materresbull.2017.03.061.

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35

Stadler, Lorenz-M., Bogdan Sepiol, Bastian Pfau, Gero Vogl, and Federico Zontone. "Investigating slow dynamics in alloys using X-ray photon correlation spectroscopy." Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms 238, no. 1-4 (August 2005): 189–91. http://dx.doi.org/10.1016/j.nimb.2005.06.046.

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36

Bienias, Przemyslaw, and Hans Peter Büchler. "Two photon conditional phase gate based on Rydberg slow light polaritons." Journal of Physics B: Atomic, Molecular and Optical Physics 53, no. 5 (February 5, 2020): 054003. http://dx.doi.org/10.1088/1361-6455/ab5bed.

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37

Hayakawa, Ryo, Norihiro Ishikura, Hong C. Nguyen, and Toshihiko Baba. "Two-photon-absorption photodiodes in Si photonic-crystal slow-light waveguides." Applied Physics Letters 102, no. 3 (January 21, 2013): 031114. http://dx.doi.org/10.1063/1.4789393.

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38

Liu, Zeng-Xing, Hao Xiong, and Ying Wu. "Room-Temperature Slow Light in a Coupled Cavity Magnon-Photon System." IEEE Access 7 (2019): 57047–53. http://dx.doi.org/10.1109/access.2019.2913788.

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39

Curti, Mariano, Gonzalo Zvitco, María Alejandra Grela, and Cecilia B. Mendive. "Angle dependence in slow photon photocatalysis using TiO 2 inverse opals." Chemical Physics 502 (March 2018): 33–38. http://dx.doi.org/10.1016/j.chemphys.2018.01.007.

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40

Cazzato, S., T. Scopigno, S. N. Yannopoulos, and G. Ruocco. "Slow dynamics of liquid Se studied by Infrared Photon Correlation Spectroscopy." Journal of Non-Crystalline Solids 355, no. 37-42 (October 2009): 1797–800. http://dx.doi.org/10.1016/j.jnoncrysol.2009.06.041.

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41

Byskov, Camilla Skinnerup, Frank Jensen, Thomas J. D. Jørgensen, and Steen Brøndsted Nielsen. "On the photostability of peptides after selective photoexcitation of the backbone: prompt versus slow dissociation." Phys. Chem. Chem. Phys. 16, no. 30 (2014): 15831–38. http://dx.doi.org/10.1039/c4cp02015d.

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42

Lang, Ben, Daryl M. Beggs, and Ruth Oulton. "Time-reversal constraint limits unidirectional photon emission in slow-light photonic crystals." Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences 374, no. 2075 (August 28, 2016): 20150263. http://dx.doi.org/10.1098/rsta.2015.0263.

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Photonic crystal waveguides are known to support C-points—point-like polarization singularities with local chirality. Such points can couple with dipole-like emitters to produce highly directional emission, from which spin-photon entanglers can be built. Much is made of the promise of using slow-light modes to enhance this light–matter coupling. Here we explore the transition from travelling to standing waves for two different photonic crystal waveguide designs. We find that time-reversal symmetry and the reciprocal nature of light places constraints on using C-points in the slow-light regime. We observe two distinctly different mechanisms through which this condition is satisfied in the two waveguides. In the waveguide designs, we consider a modest group velocity of v g ≈ c /10 is found to be the optimum for slow-light coupling to the C-points. This article is part of the themed issue ‘Unifying physics and technology in light of Maxwell's equations’.

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43

Kien, Fam Le, and K. Hakuta. "Stimulated Raman scattering with slow light." Canadian Journal of Physics 78, no. 5-6 (April 5, 2000): 543–59. http://dx.doi.org/10.1139/p00-014.

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We study the propagation dynamics of weak Raman sideband fields in a far-off-resonance Raman medium driven by a strong coupling field. We show that the interaction of the system with the strong field, under the conditions of high density, narrow Raman-transition width, and small two-photon detuning, results ina slow group velocity and a substantial enhancement of the injected anti-Stokes sideband field as well as an efficient generation of a Stokes sideband field. We find that the effective group velocity is the same for the two weak fields and is proportional to the field frequency difference instead of the frequency of the corresponding field. We also discuss the condition for exponential growth of the two sideband fields in the medium. We perform numerical calculations for solid hydrogen, a realistic system where the requirements for high density and small Raman width can be met. We demonstrate that the group velocity can be slowed down by several orders, and that the slow light plays a key role for the stimulated Raman scattering process in solid hydrogen.PACS Nos.: 42.50Gy, 42.50Hz, 42.65Ky, 42.79Nv

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44

Ašmontas, Steponas, Jonas Gradauskas, Algirdas Sužiedėlis, Aldis Šilėnas, Edmundas Širmulis, Vitas Švedas, Viktoras Vaičikauskas, et al. "Peculiarities of Photovoltage Formation across p-n Junction under Illumination of Laser Radiation." Solid State Phenomena 267 (October 2017): 167–71. http://dx.doi.org/10.4028/www.scientific.net/ssp.267.167.

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Photovoltage formation across Si and GaAs p-n junctions exposed to laser radiation is experimentally investigated. When the photon energy is lower than semiconductor forbidden energy gap, the photovoltage is found to consist of two components, U=Uf+ Uph. The first one Ufis fast having polarity of thermoelectromotive force of hot carriers. The second one Uphis slow component of opposite polarity, and it is caused by electron-hole pair generation due to two-photon absorption. Uph was shown to decrease with the rise of radiation wavelength due to diminution of two-photon absorption coefficient with wavelength. Predominance of each separate component in the formation of the net photovoltage depends on both laser wavelength and intensity.

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45

Lacaita, A., S. Cova, M. Ghioni, and F. Zappa. "Single-photon avalanche diode with ultrafast pulse response free from slow tails." IEEE Electron Device Letters 14, no. 7 (July 1993): 360–62. http://dx.doi.org/10.1109/55.225573.

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46

Kraus, H., V. B. Mikhailik, and D. Wahl. "Multiple photon counting technique for detection and analysis of slow scintillation processes." Radiation Measurements 42, no. 4-5 (April 2007): 921–24. http://dx.doi.org/10.1016/j.radmeas.2007.02.031.

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47

Liu, Chao-Zhu, Yun-Long Deng, and Miao Yin. "Relative-cavity-length-controlled slow light in a cascaded magnon-photon system." Journal of the Optical Society of America B 37, no. 4 (March 18, 2020): 1127. http://dx.doi.org/10.1364/josab.390544.

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48

Asano, Katsuaki, and Toshio Terasawa. "SLOW HEATING MODEL OF GAMMA-RAY BURST: PHOTON SPECTRUM AND DELAYED EMISSION." Astrophysical Journal 705, no. 2 (October 26, 2009): 1714–20. http://dx.doi.org/10.1088/0004-637x/705/2/1714.

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49

White, M., and E. Lessner. "Slow Positron Target Concepts for the Advanced Photon Source (APS) Linear Accelerator." Materials Science Forum 255-257 (September 1997): 778–80. http://dx.doi.org/10.4028/www.scientific.net/msf.255-257.778.

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50

Lacaita, A., M. Ghioni, S. Cova, and F. Zappa. "Ultrafast single photon avalanche diodes without slow tails in the pulse response." IEEE Transactions on Electron Devices 40, no. 11 (1993): 2145. http://dx.doi.org/10.1109/16.239835.

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