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Добірка наукової літератури з теми "Femtosecond Time-resolved Raman Spectroscopy"

Автор: Grafiati
Опубліковано: 6 вересня 2023

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Статті в журналах з теми "Femtosecond Time-resolved Raman Spectroscopy"

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Lavorel, Bruno, Ha Tran, Edouard Hertz, Olivier Faucher, Pierre Joubert, Marcus Motzkus, Tiago Buckup, et al. "Femtosecond Raman time-resolved molecular spectroscopy." Comptes Rendus Physique 5, no. 2 (March 2004): 215–29. http://dx.doi.org/10.1016/j.crhy.2004.01.013.

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2

KOBAYASHI, Takayoshi, and Masayuki YOSHIZAWA. "Femtosecond Time-Resolved Stimulated Raman Gain Spectroscopy in Polydiacetylene." Journal of Photopolymer Science and Technology 6, no. 2 (1993): 253–54. http://dx.doi.org/10.2494/photopolymer.6.253.

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3

Yoshizawa, Masayuki, Yasuhiro Hattori, and Takayoshi Kobayashi. "Femtosecond time-resolved resonance Raman gain spectroscopy in polydiacetylene." Physical Review B 49, no. 18 (May 1, 1994): 13259–62. http://dx.doi.org/10.1103/physrevb.49.13259.

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4

Namboodiri, Mahesh, Tahirzeb Khan, Khadga Karki, Mehdi Mohammad Kazemi, Sidhant Bom, Günter Flachenecker, Vinu Namboodiri, and Arnulf Materny. "Nonlinear spectroscopy in the near-field: time resolved spectroscopy and subwavelength resolution non-invasive imaging." Nanophotonics 3, no. 1-2 (April 1, 2014): 61–73. http://dx.doi.org/10.1515/nanoph-2013-0044.

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AbstractThe combination of near-field microscopy along with nonlinear optical spectroscopic techniques is presented here. The scanning near-field imaging technique can be integrated with nonlinear spectroscopic techniques to improve spatial and axial resolution of the images. Additionally, ultrafast dynamics can be probed down to nano-scale dimension. The review shows some examples for this combination, which resulted in an exciton map and vibrational contrast images with sub-wavelength resolution. Results of two-color femtosecond time-resolved pump-probe experiments using scanning near-field optical microscopy (SNOM) on thin films of the organic semiconductor 3,4,9,10 Perylenetetracarboxylic dianhydride (PTCDA) are presented. While nonlinear Raman techniques have been used to obtain highly resolved images in combination with near-field microscopy, the use of femtosecond laser pulses in electronic resonance still constitutes a big challenge. Here, we present our first results on coherent anti-Stokes Raman scattering (fs-CARS) with femtosecond laser pulses detected in the near-field using SNOM. We demonstrate that highly spatially resolved images can be obtained from poly(3-hexylthiophene) (P3HT) nano-structures where the fs-CARS process was in resonance with the P3HT absorption and with characteristic P3HT vibrational modes without destruction of the samples. Sub-diffraction limited lateral resolution is achieved. Especially the height resolution clearly surpasses that obtained with standard microCARS. These results will be the basis for future investigations of mode-selective dynamics in the near-field.
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5

Towrie, Michael, Anders Gabrielsson, Pavel Matousek, Anthony W. Parker, Ana Maria Blanco Rodriguez, and Antonín Vlček. "A High-Sensitivity Femtosecond to Microsecond Time-Resolved Infrared Vibrational Spectrometer." Applied Spectroscopy 59, no. 4 (April 2005): 467–73. http://dx.doi.org/10.1366/0003702053641397.

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We describe an apparatus that provides, for the first time, a seamless bridge between femtosecond and microsecond time-resolved Raman and infrared vibrational spectroscopy. The laser system comprises an actively Q-switched sub-nanosecond pulsed kilohertz laser electronically synchronized to an ultrafast titanium sapphire regenerative amplifier to within 0.2 ns. The ultrafast amplifier provides the stable probe light source enabling high-sensitivity infrared vibrational spectroscopy of transients. Time-resolved infrared spectra of the excited-state relaxation dynamics of metal carbonyl compounds are presented to illustrate the capability of the apparatus, and transient data is resolved from 1 picosecond to over 100 microseconds. The results are compared to conventional nanosecond Fourier transform infrared (FT-IR) and laser based flash photolysis time-resolved infrared technology.
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6

Zhao, Yang, Sheng Zhang, Boyang Zhou, Rongwei Fan, Deying Chen, Zhonghua Zhang, and Yuanqin Xia. "Molecular vibrational dynamics in PMMA studied by femtosecond CARS." Modern Physics Letters B 28, no. 28 (November 10, 2014): 1450222. http://dx.doi.org/10.1142/s0217984914502224.

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The ultrafast molecular vibrational dynamics in PMMA sheets is studied by femtosecond time-resolved coherent anti-Stokes Raman spectroscopy at room temperature. The C – H stretch modes at 2870 cm-1 and 3008 cm-1 in PMMA sheets are excited and detected. The coherence relaxation times and beat wavenumbers of the Raman modes are obtained.
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7

Jen, Myungsam, Sebok Lee, Gisang Lee, Daedu Lee, and Yoonsoo Pang. "Intramolecular Charge Transfer of Curcumin and Solvation Dynamics of DMSO Probed by Time-Resolved Raman Spectroscopy." International Journal of Molecular Sciences 23, no. 3 (February 2, 2022): 1727. http://dx.doi.org/10.3390/ijms23031727.

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Intramolecular charge transfer (ICT) of curcumin in dimethyl sulfoxide (DMSO) solution in the excited state was investigated by femtosecond electronic and vibrational spectroscopy. Excited-state Raman spectra of curcumin in the locally-excited and charge-transferred (CT) state of the S1 excited state were separated due to high temporal (<50 fs) and spectral (<10 cm−1) resolutions of femtosecond stimulated Raman spectroscopy. The ultrafast (0.6–0.8 ps) ICT and subsequent vibrational relaxation (6–9 ps) in the CT state were ubiquitously observed in the ground- and excited-state vibrational modes of the solute curcumin and the νCSC and νS=O modes of solvent DMSO. The ICT of curcumin in the excited state was preceded by the disruption of the solvation shells, including the breakage of hydrogen bonding between curcumin and DMSO molecules, which occurs at the ultrafast (20–50 fs) time scales.
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Holzapfel, W., R. Leonhardt, and W. Zinth. "The influence of phase-modulation on femtosecond time-resolved coherent Raman spectroscopy." Applied Physics B Photophysics and Laser Chemistry 47, no. 4 (December 1988): 307–12. http://dx.doi.org/10.1007/bf00716091.

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Takaya, Tomohisa, and Koichi Iwata. "Development of a femtosecond time-resolved near-IR multiplex stimulated Raman spectrometer in resonance with transitions in the 900–1550 nm region." Analyst 141, no. 14 (2016): 4283–92. http://dx.doi.org/10.1039/c6an01051b.

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Liu, Yingliang, Aditya S. Chaudhari, Aditi Chatterjee, Prokopis C. Andrikopoulos, Alessandra Picchiotti, Mateusz Rebarz, Miroslav Kloz, Victor A. Lorenz-Fonfria, Bohdan Schneider, and Gustavo Fuertes. "Sub-Millisecond Photoinduced Dynamics of Free and EL222-Bound FMN by Stimulated Raman and Visible Absorption Spectroscopies." Biomolecules 13, no. 1 (January 12, 2023): 161. http://dx.doi.org/10.3390/biom13010161.

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Time-resolved femtosecond-stimulated Raman spectroscopy (FSRS) provides valuable information on the structural dynamics of biomolecules. However, FSRS has been applied mainly up to the nanoseconds regime and above 700 cm−1, which covers only part of the spectrum of biologically relevant time scales and Raman shifts. Here we report on a broadband (~200–2200 cm−1) dual transient visible absorption (visTA)/FSRS set-up that can accommodate time delays from a few femtoseconds to several hundreds of microseconds after illumination with an actinic pump. The extended time scale and wavenumber range allowed us to monitor the complete excited-state dynamics of the biological chromophore flavin mononucleotide (FMN), both free in solution and embedded in two variants of the bacterial light-oxygen-voltage (LOV) photoreceptor EL222. The observed lifetimes and intermediate states (singlet, triplet, and adduct) are in agreement with previous time-resolved infrared spectroscopy experiments. Importantly, we found evidence for additional dynamical events, particularly upon analysis of the low-frequency Raman region below 1000 cm−1. We show that fs-to-sub-ms visTA/FSRS with a broad wavenumber range is a useful tool to characterize short-lived conformationally excited states in flavoproteins and potentially other light-responsive proteins.
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Дисертації з теми "Femtosecond Time-resolved Raman Spectroscopy"

1

Philpott, Matthew Perry. "Time-resolved resonance Raman and femtosecond pump-probe study of chlorine dioxide (OClO) photochemistry in solution /." Thesis, Connect to this title online; UW restricted, 2000. http://hdl.handle.net/1773/8555.

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Kovac, Philip. "Exploring time-dependent approaches towards the calculation of dynamics and spectroscopic signals: A mixed quantum/semiclassical wave packet method and the theory of transient absorption and femtosecond stimulated Raman scattering." Thesis, University of Oregon, 2018. http://hdl.handle.net/1794/23124.

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Анотація:
We present a time-dependent mixed quantum/semiclassical approach to calculating linear absorption spectra. Applying Variational Fixed Vibrational Basis/Gaussian Bath theory (FVB/GB) to the treatment of small molecules isolated in an extended cryogenic medium, an assumed time-scale separation between the few rapid, largely intramolecular modes of the guest and the several slower extended modes of the medium is utilized to partition a system from the surrounding bath. The system dynamics are handled with basis set methods, while the bath degrees of freedom are subject to a semiclasscial thawed Gaussian ansatz. The linear absorption spectrum for a realistic model system is calculated using FVB/GB results and then compared with a numerically exact calculation. Also contained in this dissertation are previously published theoretical works on Transient Absorption and Femtosecond Stimulated Raman Spectroscopy. Both encompass a rebuilding of the theory and elucidate the information content of the respective spectroscopic signals. This dissertation includes previously published co-authored material.
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3

Williams, Leah Ruby. "Femtosecond time-resolved spectroscopy of organic molecular crystals." Thesis, Massachusetts Institute of Technology, 1988. http://hdl.handle.net/1721.1/14589.

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Ekvall, Karin. "Time resolved laser spectroscopy." Doctoral thesis, KTH, Physics, 2000. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-3063.

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Tatham, Martin Christopher. "Time resolved Raman spectroscopy of semiconductor structures." Thesis, University of Oxford, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.305429.

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Jerebtsov, Serguei Nikolaevich. "Femtosecond time-resolved spectroscopy of coherent oscillations in nanomaterials." [College Station, Tex. : Texas A&M University, 2007. http://hdl.handle.net/1969.1/ETD-TAMU-1358.

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Šiffalovič, Peter. "Femtosecond time resolved photoelectron spectroscopy in the extreme ultraviolet region." [S.l.] : [s.n.], 2002. http://deposit.ddb.de/cgi-bin/dokserv?idn=964973502.

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8

McCleese, Christopher. "Femtosecond Time-Resolved Spectroscopy Studies of Interfacial Charge Separation Processes." Case Western Reserve University School of Graduate Studies / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=case149182204612303.

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Hayes, Gary Robert. "Ultrafast relaxation processes in semiconductors studied by femtosecond time-resolved photoluminescence spectroscopy." Thesis, University of Cambridge, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.263051.

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朱麗敏 and Lai-man Chu. "Time-resolved spectroscopic investigation of chloroaniline and oxetanerelated compounds." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2007. http://hub.hku.hk/bib/B39557455.

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Книги з теми "Femtosecond Time-resolved Raman Spectroscopy"

1

International Conference on TRVS (5th 1991 Tokyo, Japan). Time-resolved vibrational spectroscopy V: Proceedings of the 5th International Conference on Time-Resolved Vibrational Spectroscopy, Tokyo, Japan, June 3-7, 1991. Berlin: Springer-Verlag, 1992.

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2

International Conference on TRVS (6th 1993 Berlin, Germany). Time-resolved vibrational spectroscopy VI: Proceedings of the Sixth International Conference on Time-Resolved Vibrational Spectroscopy, Berlin, Germany, May 23-28, 1993. Berlin: Springer, 1994.

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3

Lau, Albrecht. Time-Resolved Vibrational Spectroscopy VI: Proceedings of the Sixth International Conference on Time-Resolved Vibrational Spectroscopy, Berlin, Germany, May 23-28, 1993. Berlin, Heidelberg: Springer Berlin Heidelberg, 1994.

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4

Salvatore, Califano, Foggi Paolo, and Righini Roberto, eds. Time resolved vibrational spectroscopy: Proceedings of the XI TRVS international conference, Castiglione della Pescaia, May 24-29, 2003. Firenze: L. S. Olschki, 2005.

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5

Paolo, Foggi, Califano S, and Righini Roberto, eds. Time resolved vibrational spectroscopy: Proceedings of the "XI TRVS international conference" Castiglione della Pescaia, May 24-29, 2003. Firenze: L.S. Olschki, 2005.

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6

1939-, Phillips D., Atkinson G. H, and Royal Institution of Great Britain. Photochemistry Discussion Group., eds. Time resolved laser raman spectroscopy: Proceedings of a one day symposium held by the Photochemistry Discussion Group of the Royal Institution of Great Britain, 13th December 1984. Chur, Switzerland: Harwood Academic Publishers, 1986.

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7

D, Phillips, Atkinson George H, and Royal Institution of Great Britain. Photochemistry Discussion Group., eds. Time-resolved laser Raman spectroscopy: Proceedings of a one-day symposium held by the Photochemistry Discussion Group of the Royal Institution of Great Britain, 13 December 1984. Chur, Switzerland: Harwood Academic Publishers, 1987.

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8

Laubereau, Alfred. Time-Resolved Vibrational Spectroscopy: Proceedings of the 2nd International Conference, Emil-Warburg-Symposium, Bayreuth-Bischofsgrün, Fed. Rep. of Germany, June 3-7, 1985. Berlin, Heidelberg: Springer Berlin Heidelberg, 1985.

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9

1942-, Laubereau A., Stockburger M. 1929-, and International Conference on TRVS (2nd : 1985 : Bayreuth, Germany and Bischofsgrün, Germany), eds. Time-resolved vibrational spectroscopy: Proceedings of the 2nd international conference, Emil-Warburg symposium, Bayreuth-Bischofsgrün, Fed. Rep. of Germany, June 3-7, 1985. Berlin: Springer-Verlag, 1985.

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10

1934-, Cardona Manuel, and Merlin R. 1950-, eds. Light scattering in solids. Berlin: Springer, 2007.

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Частини книг з теми "Femtosecond Time-resolved Raman Spectroscopy"

1

Krishnakanth, K. N., and S. Venugopal Rao. "Time-Resolved Femtosecond Coherent Anti-Stokes Raman Spectroscopic Studies of Picric Acid and Ammonium Nitrate." In Springer Proceedings in Physics, 181–84. Singapore: Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-15-9259-1_40.

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2

Kuramochi, Hikaru, Satoshi Takeuchi, Kento Yonezawa, Hironari Kamikubo, Mikio Kataoka, and Tahei Tahara. "Probing Ultrafast Structural Dynamics of Photoactive Yellow Protein with Femtosecond Time-Domain Raman Spectroscopy." In Springer Proceedings in Physics, 528–31. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-13242-6_129.

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3

Groot, Marie Louise, and Rienk Van Grondelle. "Femtosecond Time-Resolved Infrared Spectroscopy." In Biophysical Techniques in Photosynthesis, 191–200. Dordrecht: Springer Netherlands, 2008. http://dx.doi.org/10.1007/978-1-4020-8250-4_10.

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4

Wilbrandt, Robert, Niels-Henrik Jensen, C. Houée-Levin, and R. V. Bensasson. "Time-Resolved Resonance Raman Spectroscopy." In Primary Photo-Processes in Biology and Medicine, 93–109. Boston, MA: Springer US, 1985. http://dx.doi.org/10.1007/978-1-4684-1224-6_6.

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5

Kamalov, V. F., and Y. P. Svirko. "Femtosecond Time-Resolved Resonance CARS Spectroscopy: Theory." In Springer Proceedings in Physics, 318–19. Berlin, Heidelberg: Springer Berlin Heidelberg, 1992. http://dx.doi.org/10.1007/978-3-642-84771-4_95.

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6

Chemla, D. S., J. B. Stark, and W. H. Knox. "Femtosecond Time-Resolved Spectroscopy of Magneto-Excitons." In Ultrafast Phenomena VIII, 21–28. Berlin, Heidelberg: Springer Berlin Heidelberg, 1993. http://dx.doi.org/10.1007/978-3-642-84910-7_5.

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7

Milne, Christopher J., Yun-Liang Li, and R. J. Dwayne Miller. "Two Dimensional Fifth-Order Raman Spectroscopy." In Time-Resolved Spectroscopy in Complex Liquids, 1–72. Boston, MA: Springer US, 2008. http://dx.doi.org/10.1007/978-0-387-25558-3_1.

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8

Kunin, Alice, and Daniel M. Neumark. "Femtosecond Time-Resolved Photoelectron Spectroscopy of Molecular Anions." In Physical Chemistry of Cold Gas-Phase Functional Molecules and Clusters, 307–35. Singapore: Springer Singapore, 2019. http://dx.doi.org/10.1007/978-981-13-9371-6_11.

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Seel, M., and W. Domcke. "Femtosecond Time-Resolved Ionization Spectroscopy of Polyatomic Molecules." In Ultrafast Phenomena VIII, 76–77. Berlin, Heidelberg: Springer Berlin Heidelberg, 1993. http://dx.doi.org/10.1007/978-3-642-84910-7_17.

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von der Linde, D. "Time-Resolved Raman Spectroscopy of Laser-Heated Semiconductors." In Springer Proceedings in Physics, 100–106. Berlin, Heidelberg: Springer Berlin Heidelberg, 1985. http://dx.doi.org/10.1007/978-3-642-47541-2_21.

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Тези доповідей конференцій з теми "Femtosecond Time-resolved Raman Spectroscopy"

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Namboodiri, V., M. Namboodiri, G. Flachenecker, Arnulf Materny, P. M. Champion, and L. D. Ziegler. "Femtosecond Time-Resolved Observation of Hot Vibrational States in Carotenoides." In XXII INTERNATIONAL CONFERENCE ON RAMAN SPECTROSCOPY. AIP, 2010. http://dx.doi.org/10.1063/1.3482604.

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2

Lobkov, V. S., S. A. Moiseev, I. V. Negrashov, and K. M. Salikhov. "Molecular vibrations in nitrobenzene by femtosecond time-resolved impulsive stimulated Raman scattering." In PECS '97: Photon Echo and Coherent Spectroscopy, edited by Vitaly V. Samartsev. SPIE, 1997. http://dx.doi.org/10.1117/12.287703.

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Materny, Arnulf, Jakow Konradi, Vinu Namboodiri, Mahesh Namboodiri, Abraham Scaria, V. K. Vaidyan, and V. S. Jayakumar. "Nonlinear Raman Techniques in Femtosecond Time Resolved Spectroscopy for the Analysis and Control of Molecular Dynamics." In PERSPECTIVES IN VIBRATIONAL SPECTROSCOPY: Proceedings of the 2nd International Conference on Perspectives in Vibrational Spectroscopy (ICOPVS 2008). AIP, 2008. http://dx.doi.org/10.1063/1.3046224.

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Matousek, P., A. W. Parker, P. F. Taday, W. T. Toner, and M. Towrie. "Doubly Tunable Femtosecond Pulses Generated in the Visible using Optical Parametric Amplifiers for Time-resolved Spectroscopy." In Laser Applications to Chemical and Environmental Analysis. Washington, D.C.: Optica Publishing Group, 1996. http://dx.doi.org/10.1364/lacea.1996.lwd.3.

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Анотація:
Many time-resolved spectroscopy techniques require two broadly and independently tunable, synchronised light pulses. This requirement can be met by optical parametric oscillators (OPOs) [1] and travelling wave optical parametric amplifiers (OPAs) [2, 3, 4, 5]. The latter capable of providing higher pulse energies. Our aim was to develop a multikilohertz repetition rate OPA system capable of providing femtosecond/picosecond, synchronised and independently tunable pump and probe pulses in the visible part of the spectrum for time-resolved absorption and resonance Raman spectroscopies.
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5

Nelson, Keith A., Margaret R. Farrar, Leah R. Williams, and Yong-Xin Yan. "Ultrafast time-resolved spectroscopy of coherent vibrational motion and vibrationally driven rearrangements." In OSA Annual Meeting. Washington, D.C.: Optica Publishing Group, 1986. http://dx.doi.org/10.1364/oam.1986.fb1.

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Impulsive stimulated scattering (ISS) is an entirely time-domain form of vibrational and quasielastic light scattering carried out on the femtosecond-picosecond-nanosecond time scales to complement conventional coherent and incoherent scattering spectroscopy in the THz-GHz-MHz frequency regimes. ISS permits direct observation of coherently vibrating species at various stages of vibrational distortion. This offers unique possibilities for measurement of vibrational dynamics, characterization of vibrationally distorted species, and observation of vibrationally induced rearrangements.1 Impulsive stimulated Brillouin and Raman scattering (ISBS, ISRS) have been used to excite coherent acoustic and optic phonons in crystals and to measure directly the dynamics of phonon-driven structural phase transitions in inorganic, organic, and incommensurate crystals. Femtosecond time-resolved observations of THz-frequency optic phonon oscillations and rapid (~1-ps) vibrational dephasing have been carried out through ISRS in inorganic crystals and in organic crystals with phonon-driven bimolecular reactions. Acoustic and orientational motions have been examined in viscoelastic fluids near liquid-glass transitions, liquid crystals, and simple fluids. ISRS measurement of vibrational population lifetimes ( T 1 ) and time-resolved absorption spectroscopy of coherently vibrating molecules and crystals are discussed. Finally, the ubiquitous occurrence of ISRS with ultrashort pulses is explained.1
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Lotshaw, William T., P. Randall Staver, Steven Palese, Lynn Schilling, and R. J. Dwayne Miller. "Femtosecond probes of molecular and structural dynamics in liquid water: dependence on temperature and ionic solutes." In Modern Spectroscopy of Solids, Liquids, and Gases. Washington, D.C.: Optica Publishing Group, 1995. http://dx.doi.org/10.1364/msslg.1995.sfb3.

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The transient waveforms measured in the femtosecond time-resolved, optical heterodyne detected Raman-induced Kerr effect in liquid water (fs OHD-RIKE) are interpreted by the combination of a forced oscillator kinetic analysis and modal decomposition of the depolarized Raman spectrum deduced from a fast Fourier transform analysis of the discreetly sampled experimental observable. We recently presented an analysis of the fs OHD-RIKE dynamics observed in room temperature/atmospheric pressure liquid water accounting for the structural/vibrational dynamics over the inverse frequency range 0-600 cm-1[1].
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7

Herink, Georg, Alexandra Völkel, and Timo Wirth. "Stimulated time-domain raman spectroscopy inside a femtosecond laser cavity." In Real-time Measurements, Rogue Phenomena, and Single-Shot Applications VIII, edited by Georg Herink, Daniel R. Solli, and Serge Bielawski. SPIE, 2023. http://dx.doi.org/10.1117/12.2656637.

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8

Bardeen, C. J., and C. V. Shank. "Solvent Dependence of the Femtosecond Three Pulse Photon Echo for LD690 in n-Alcohols." In International Conference on Ultrafast Phenomena. Washington, D.C.: Optica Publishing Group, 1994. http://dx.doi.org/10.1364/up.1994.thd.16.

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Анотація:
The characteristic timescales of the solvent-solute interaction are of great interest to those studying the spectroscopy and reaction dynamics of molecules in condensed phases. These timescales influence a variety of linear and non-linear spectroscopic measurements, and together these different types of measurements should constrain the quantitative values of the interaction parameters. In this work we use both linear (absorption and fluorescence) and non-linear (resonance raman and femtosecond time-resolved 4-wave-mixing) spectroscopies to systematically investigate the spectral broadening of the dye molecule LD690 in a series of n-alcohols.
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9

Kobayashi, Takayoshi, Masayuki Yoshizawa, and Yasuhiro Hattori. "Development of Femtosecond Resonance Raman Gain Spectroscopy and Observation of Vibrational Spectrum of Excitons with 1 ps Lifetime in Polydiacetylene." In International Conference on Ultrafast Phenomena. Washington, D.C.: Optica Publishing Group, 1994. http://dx.doi.org/10.1364/up.1994.me.5.

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Анотація:
In the present paper we have developed a Raman gain spectroscopy with femtosecond resolution. The advantage of the method is as follows. (1) The method is not suffered from disturbance by fluorescence. (2) The interference of signal with nonresonant background does not appear. This is extremely advantageous to the time-resolved CARS spectroscopy. We have applied this new method to the excitons in polydiacetylene (PDA) with only 1.5 ps lifetime. This offers the vibrational spectrum with the highest time resolution.
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10

Palese, S., J. T. Buontempo, Y. Tanimura, S. Mukamel, R. J. D. Miller, and W. T. Lotshaw. "Femtosecond Two-Dimensional Raman Spectroscopy of Liquid Water." In International Conference on Ultrafast Phenomena. Washington, D.C.: Optica Publishing Group, 1994. http://dx.doi.org/10.1364/up.1994.wc.21.

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Critical to the understanding of condensed phase reaction dynamics is the understanding of a solvent's response to and influence on the system dynamics. Although models of a solvent's vibrational and orientational dynamics can be tested against infrared and Raman studies of the neat solvent, thus far this has not proven fruitful because the influence of nuclear dynamics on infrared absorption, optical Kerr effect, spontaneous Raman and CARS spectra is usually masked by inhomogeneous broadening. However, valuable information about the solvent nuclear dynamics can be extracted from nonlinear spectroscopies such as infrared and Raman echoes. Using the formalism of Tanimura and Mukamel,1 we have calculated the 3rd, 5th, and 7th order Raman spectra for liquid water employing a multimode Brownian oscillator model to represent the water modes. This model is expected to be appropriate for liquid water because it accounts for nuclear dynamics occurring on a finite time scale, extrapolating continuously between the limiting cases of homogeneous and inhomogeneous nuclear dephasing.
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Звіти організацій з теми "Femtosecond Time-resolved Raman Spectroscopy"

1

Crim, F. F. Time-Resolved Photoisomerization Using Femtosecond Stimulated Raman Spectroscopy. Fort Belvoir, VA: Defense Technical Information Center, December 2009. http://dx.doi.org/10.21236/ada511313.

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