Results 161 to 170 of about 16,988 (191)
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Coherent anti-Stokes resonance Raman scattering
Optical and Quantum Electronics, 1979The 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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Broadband coherent anti-Stokes Raman scattering in silicon
Optics Letters, 2010In silicon devices, the spectral bandwidth of coherent anti-Stokes Raman scattering (CARS) is limited by the narrowband nature of the Raman process in this medium. In this Letter, we report the observation of broadband wavelength conversion in silicon through CARS enhanced by the self-phase-modulation-induced spectral broadening of the optical pump ...
Prakash, Koonath +2 more
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Dual-pump coherent anti-Stokes-Raman scattering microscopy
Optics Letters, 2006We introduce dual-pump coherent anti-Stokes-Raman scattering (dual-CARS) microscopy. This new technique permits simultaneous imaging of two species characterized by different molecular vibrations, as well as the removal of nonresonant background. This is achieved by using three synchronized laser pulses probing two different vibrations.
Ondrej, Burkacky +3 more
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Circularly polarized coherent anti-Stokes Raman scattering microscopy
Optics Letters, 2013We demonstrate circularly polarized coherent anti-Stokes Raman scattering (CP-CARS) microscopy that significantly suppresses the nonresonant background for high-contrast vibrational imaging. Circularly polarized pump and Stokes fields with opposite handedness are used to excite CARS signal.
Upputuri, P.K. +5 more
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Heterodyne coherent anti-Stokes Raman scattering (CARS) imaging
Optics Letters, 2006We have achieved rapid nonlinear vibrational imaging free of nonresonant background with heterodyne coherent anti-Stokes Raman scattering (CARS) interferometric microscopy. This technique completely separates the real and imaginary responses of nonlinear susceptibility chi(3) and yields a signal that is linear in the concentration of vibrational modes.
Eric O, Potma +2 more
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Coherent Anti-Stokes Raman scattering with reflective optics
Applied Optics, 1983Attention is given to the implementation of a novel reflective optics configuration in which the lens normally employed for focusing and crossing the input laser beams in Coherent Anti-Stokes Raman spectroscopy (CARS) is replaced by a spherical mirror, allowing large crossing angles to be obtained with a single focusing device and permitting the laser ...
R R, Antcliff, O, Jarrett
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Coherent Anti-Stokes Raman Scattering (CARS) Correlation Spectroscopy
ChemPhysChem, 2002KEYWORDS:CARS ¥ correlation spectroscopy ¥ diffusion ¥ microscopy ¥nonlinearopticsCorrelationtechniqueshavebeenwidelyappliedformonitoringsignalfluctuationsinadefinedobservationvolume.Thecauseofthefluctuationscaneitherbechangesinthenumberdensityofparticlesintheprobevolumeorchangesintheirspectroscopicproperties.Ingeneral ...
Thomas, Hellerer +3 more
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Coherent anti-Stokes Raman scattering in a microcavity
Optics Letters, 2009We study tight focus coherent anti-Stokes Raman scattering (CARS) emission in a microcavity where the active medium is squeezed between two independent planar mirrors. We show strong modifications in the CARS forward and backward far-field radiation patterns. For low-order cavities, we demonstrate that most of the emitted power can be concentrated into
David, Gachet +2 more
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Coherent anti-Stokes Raman scattering from small volumes
Optics Letters, 1984We have used coherent anti-Stokes Raman scattering spectroscopy to resolve the Raman Q-branch line [Q (2) at 2987.18 cm(-1)] of dueterium gas contained in a 60-microm-diameter glass sphere. The 60-microm spheres contained only 10(+13) molecules at standard temperature and pressure; this made it possible to study gases that in larger quantities would be
E K, Gustafson, R L, Byer
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Triple‐Resonance Coherent Anti‐Stokes Raman Scattering Microspectroscopy
ChemPhysChem, 2009AbstractFluorescence‐free microscopy: A new nonlinear optical microspectroscopy technique, femtosecond (fs) triple‐resonance coherent anti‐Stokes Raman scattering, in which the amplitude and phase of input fs laser pulses are optimally shaped to be in triple resonance with the molecular electronic and vibrational transitions, generates a coherent ...
Wei, Min +3 more
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