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Pulsed spontaneous Raman scattering technique for luminous environments
Applied Optics, 1978A gated photon counting system, cavity-dumped argon-ion laser, and a multipass retroreflecting light cell have been combined in a system to enhance spontaneous Raman scattering in luminous background situations. Signal-to-background ratio (SBR) has been improved a factor of 450 over a single-pass cw system with cw power equal to the pulsed average ...
A J, Mulac +3 more
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Temperature measurements in spray flames by spontaneous Raman scattering
Optics Letters, 1996Spontaneous Raman scattering was applied for quantitative temperature measurements in turbulent methanol spray flames. Possible interferences from laser-induced breakdown and elastic light scattered from the fuel drops were discriminated against by optoacoustic means. Polycyclic aromatic hydrocarbons were found to be a negligible source of fluorescence
A N, Karpetis, A, Gomez
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Dynamics of polynucleotide/solvent interaction with spontaneous Raman scattering
SPIE Proceedings, 1994Isotropic and Anisotropic Raman spectra of RNA and DNA solutions have been obtained with a scanning monochromator system. The registration of the spectra was optimized for the special purpose of extracting bandwidth information and the non-coincidence effect. The following polynucleotides were selected: poly(rA) poly(rU) , poly(rA) . poly(rU) , poly(rk-
Otto, Cornelis +2 more
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Spontaneous Raman scattering by ground-state oxygen atoms
Optics Letters, 1981We report the first known observation of Raman scattering by oxygen atoms. The (3)P(2)?(3)P(1) and (3)P(2)?(3)P(0) transitions in the electronic ground state that produced Raman shifts of 158 and 227 cm(-1) were detected. These transitions were observed in a fuel-lean atmospheric H(2) + O(2) flame. By comparing the O electronic and O(2) pure-rotational
C J, Dasch, J H, Bechtel
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Stimulated Raman laser excitation of spontaneous resonance Raman scattering
Chemical Physics Letters, 1980The efficient conversion of the second and third harmonics of a Nd YAG laser to near UV radiation in the 395–500 nm range by stimulated Stokes (and anti-Stokes) Raman scattering (SRS) in a 1 m Raman oscillator containing compressed H2 or D2 is used as an excitation source for spontaneous resonance Raman spectroscopy (RRS).
Richard P. Van Duyne, Keith D. Parks
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Short-time squeezing in spontaneous Raman and stimulated Raman scattering
Quantum and Semiclassical Optics: Journal of the European Optical Society Part B, 1995The non-classical effect of squeezing of light in spontaneous Raman and stimulated Raman processes are investigated under a short-time approximation based on a fully quantum mechanical approach. A Raman process is looked upon as a two-photon and one-phonon interaction process.
A Kumar, P S Gupta
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Phenomenological model of spontaneous Raman scattering
Optics Communications, 1981Abstract We re-examine the phenomenological interpretation of near-resonant Raman scattering as being due to the finite life-time of the intermediate states. We show that sufficiently close to resonance this interpretation leads to a cross section which is in exact agreement with the predictions of QED, even when Zeeman degeneracy is taken into ...
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Theory of Spontaneous and Coherent Raman Scattering
1998Abstract The universality of the phenomenon, the convenience of the experimental technique and the simplicity of the spectra obtained enable the effect to be used as an experimental aid to the solution of a wide range of problems in physics and chemistry.
Eric O Potma, X Sunney Xie
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Spontaneous Raman scattering in atomic thallium vapor
Physics Letters A, 1973Abstract Using a cw argon-ion laser, we have measured the spontaneous Raman scattering cross section, σ R , and linewidth in atomic thallium vapor. For 4880-A excitation, σ R = 1.6 × 10 −27 cm 2 . We observe no pressure broadening of the Raman line at vapor pressures to 100 torr.
A. Flusberg +2 more
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Spontaneous Raman Scattering in Suspended InGaAsP Waveguides
Conference on Lasers and Electro-Optics/International Quantum Electronics Conference, 2009We demonstrate the spontaneous Raman effect in suspended InGaAsP waveguides and report that the zinc blende Raman selection rules are relaxed in the waveguide geometry.
S. A. Holmstrom +8 more
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