Results 251 to 260 of about 53,162 (277)

Coherent versus incoherent Raman scattering: molecular coherence excitation and measurement

Optics Letters, 2007
We present a comparative analysis of spontaneous and coherent Raman scattering on pyridine. The instantaneous excitation of the molecular coherence is done by a pair of ultrashort preparation pulses. Then, a long narrowband probe pulse is scattered off the molecular vibrations.
Dmitry, Pestov, Gombojav O, Ariunbold, Xi, Wang, Robert K, Murawski, Vladimir A, Sautenkov, Alexei V, Sokolov, Marlan O, Scully   +6 more
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Fröhlich coherent vibrations and raman scattering

Czechoslovak Journal of Physics, 1991
Coherent vibration systems are very likely composed of oscillating protein molecules located in the closed surface of the plasma membrane. Except short periods in the cell life, the distribution of the oscillating molecules corresponds to the condition of the minimum energy of the generated electromagnetic field.
J. Pokorný, J. Fiala, K. Vacek
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Coherent Raman Scattering Microscopy

2009
A series of advances over the past decade have made the combination of coherent Raman scattering (CRS) with optical microscopy a highly sensitive and chemically selective tool for the label-free and noninvasive analysis of chemical species or biological components inside a sub-femtoliter probe volume. By exploiting the coherent driving and detection of
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Molecular symmetries by coherent Raman scattering

2017 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC), 2017
Obtaining information on the matter organization on the micrometer scale still remains a challenge in physics, chemistry or biology. Non-linear vibrational processes such as Coherent Anti-Stokes Raman Scattering (CARS) are powerful tools for 3D imaging of chemical properties without sample preparation.
Carsten Cleff, Herve Rigneault, Sophie Brasselet, Julien Duboisset   +3 more
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Coherent Anti-Stokes Raman Scattering

1986
The Raman effect is an inelastic photon-scattering process, in which an atom or molecule absorbs one photon while simultaneously emitting another photon at a different frequency. The emitted photon is at a frequency, w0, which can be greater or less than the frequency, w1, of the absorbed photon: (1) where Δw > 0.
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Concentration dependence in coherent Raman scattering

Journal of Modern Optics, 2008
We investigate the concentration dependence of the femtosecond coherent anti-stokes Raman scattering (CARS) signals collected from several mixtures of molecules. We demonstrate a clear quadratic dependence of the transmitted CARS signal on the number of molecules of pyridine in water by looking at the Raman signal at 1030 cm−1.
Arthur Dogariu, Alexander Goltsov, Hui Xia, Marlan O. Scully   +3 more
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Applications of Coherent Raman Scattering

2010
Recent explorations based on the concept of molecular coherence have lead to exciting developments, extending the ideas of coherence from atomic physics to more complex, molecular systems. Atomic coherence lies at the core of such fascinating phenomena as electromagnetically induced transparency, ultra- slow light propagation, and lasing without ...
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Modulation transfer using coherent Raman scattering

2005 Quantum Electronics and Laser Science Conference, 2005
We describe a scheme based on coherent Raman scattering for efficient transfer of amplitude and phase modulation from one frequency to another. Experimental results show bandwidths of at least tens of MHz and 99% fidelity.
A.M. Marino, R.S. Bennink, V. Wong, R.W. Boyd, C.R. Stroud   +4 more
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Coherent anti-Stokes resonance Raman scattering

Optical and Quantum Electronics, 1979
The intensity of coherent anti-Stokes resonance Raman scattering (CARRS) is calculated taking into account the resonant absorption of laser and anti-Stokes waves and changes in the molecule population. The resonant absorption causes an alteration of the phase of the laser wave leading to a decrease and periodic behaviour of the anti-Stokes intensity ...
J. Herrmann, M. Landmann
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Coherent Raman scattering with three lasers

Applied Physics Letters, 1978
General conditions for four-wave mixing processes are investigated for the three-dimensional geometry. Unlike the standard two-frequency coherent Raman scattering, the use of three laser beams allows great flexibility in the phase-matching condition. Theoretically calculated plots are presented for dispersive and nondispersive media and are compared ...
S. Chandra, A. Compaan, E. Wiener-Avnear
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