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Elliptically polarized coherent anti-Stokes Raman scattering microscopy
Optics Letters, 2008We report an approach to coherent anti-Stokes Raman scattering (CARS) microscopy that significantly suppresses the nonresonant background for high-contrast vibrational imaging. We employ an elliptically polarized pump field with an aspect ratio of 1:3 of the ellipse combined with a linearly polarized Stokes field for elliptically polarized CARS (EP ...
Lu, F., Zheng, W., Huang, Z.
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Coherent Anti-Stokes Raman Scattering
1986The 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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Cooling Silicon Raman Lasers with Coherent Anti-Stokes Raman Scattering
Optics and Photonics News, 2007In this paper we present an original technique, to mitigate the heat dissipation in Raman lasers. The lasing mechanism of a Raman laser is stimulated Stokes Raman scattering (SSRS), where a pump photon is converted into a lower energy Stokes photon and a phonon or heat, the so-called quantum-defect heating.
Vermeulen, Nathalie +2 more
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Coherent Anti-Stokes Raman Scattering
1981The possibility of carrying out temperature and concentration measurements in gases by a Raman spectroscopy analysis was suggested and demonstrated about a decade ago. Following some early publications on this subject [1,2], a massive effort was undertaken in order to evaluate the potential of spontaneous Raman scattering in the important areas of ...
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Single-pulse coherent anti-Stokes Raman scattering
Applied Physics Letters, 1976A new technique for use in coherent anti-Stokes Raman scattering experiments allows the simultaneous generation of an entire Q-branch spectrum of the anti-Stokes radiation from a molecular gas using a single laser pulse. With this technique the stringent requirements of the previous techniques concerning laser linewidth and frequency stability are ...
Won B. Roh +2 more
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Partially coherent anti-Stokes Raman scattering (PCARS)
Chemical Physics Letters, 1990Abstract Enhanced anti-Stokes Raman scattering has been observed with a 90° scattering geometry when organic liquids including benzene, toluene, and cyclohexane were irradiated by two collinearly superimposed laser beams in a Raman resonance. The effect is analogous to CARS but the phase-matching condition is not fulfilled. It is argued that the CARS
Taka-aki Ishibashi, Hiro-o Hamaguchi
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Exclusive anti-Stokes Raman scattering using coherent material excitation
Optics Letters, 1991A new process capable of scattering intense anti-Stokes waves that uses stimulated electronic Raman scattering in metal vapor is proposed. The coherent material excitation produced by a prepump pulse couples with the forthcoming main pulse exclusively to create polarization that radiates the anti-Stokes wave.
S, Wada +4 more
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Refractive effects in coherent anti-Stokes Raman scattering microscopy
Applied Optics, 2006Coherent anti-Stokes Raman scattering (CARS) microscopy with high sensitivity and high three- dimensional resolution has been developed for the vibrational imaging of chemical species. Due to the coherent nature of the CARS emission, it has been reported that the detection of epi-CARS and forward-CARS (F-CARS) signals depends on the size and shape of ...
Djaker, N. +4 more
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Coherent anti-Stokes Raman scattering under frequency comb excitation
Applied Optics, 2018We study the efficiency of coherent anti-Stokes Raman scattering (CARS) under frequency comb excitation. We calculate the power density of the anti-Stokes signal for two major cases: (1) molecular excitation by frequency comb and cw probe and, (2) both excitation and probing by frequency combs. In the first case, average CARS power varies as an inverse
Alexey Shchekin +6 more
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