Results 131 to 140 of about 2,856 (176)

Polarization coherent anti-Stokes Raman scattering microscopy

Optics Letters, 2001
We report polarization coherent anti-Stokes Raman scattering (P-CARS) microscopy that allows vibrational imaging with high sensitivity and spectral selectivity. The nonresonant background signals from both Raman scatterers and the solvent are efficiently suppressed in P-CARS microscopy.
J X, Cheng, L D, Book, X S, Xie
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Broadband coherent anti-Stokes Raman scattering in silicon

Optics Letters, 2010
In 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, Daniel R, Solli, Bahram, Jalali   +2 more
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Quantum squeezing effects of radiation in stokes and anti-stokes modes in coherent anti-stokes Raman scattering and coherent anti-stokes hyper-Raman scattering

Journal of Modern Optics, 2004
The non-classical effects of squeezing of light in coherent anti-Stokes Raman scattering (CARS) and coherent anti-Stokes hyper-Raman scattering (CAHRS) are investigated under the short-time approximation based on a fully quantum mechanical approach. In an idealized model CARS, the interaction is looked upon as a process involving absorption of a pump ...
Dilip Kumar Giri, P. S. Gupta
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Quantitative Coherent Anti-Stokes Raman Scattering (CARS) Microscopy

The Journal of Physical Chemistry B, 2011
The ability to observe samples qualitatively at the microscopic scale has greatly enhanced our understanding of the physical and biological world throughout the 400 year history of microscopic imaging, but there are relatively few techniques that can truly claim the ability to quantify the local concentration and composition of a sample.
Day, James P. R., Domke, Katrin F., Rago, Gianluca, Kano, Hideaki, Hamaguchi, Hiro-O, Vartiainen, Erik M., Bonn, Mischa   +6 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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Cooling Silicon Raman Lasers with Coherent Anti-Stokes Raman Scattering

Optics and Photonics News, 2007
In 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, Debaes, Christof, Thienpont, Hugo   +2 more
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Coherent anti‐Stokes Raman scattering in Raman lasers and Raman wavelength converters

Laser & Photonics Reviews, 2010
AbstractIn this paper recent research progress on the use of Coherent Anti‐Stokes Raman Scattering (CARS) in Raman lasers and Raman wavelength converters is reviewed. The latest insights in the physical nature and behavior of CARS are addressed, and the recent performance breakthroughs in CARS‐based Raman wavelength conversion are discussed.
Vermeulen, Nathalie, Debaes, Christof, Thienpont, Hugo   +2 more
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Refractive effects in coherent anti-Stokes Raman scattering microscopy

Applied Optics, 2006
Coherent 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., Gachet, D., Sandeau, N., Lenne, P.-F., Rigneault, H.   +4 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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Applications of coherent anti-Stokes Raman scattering in silicon photonics

SPIE Proceedings, 2010
In this invited paper, we first address the differences between the uses of coherent anti-Stokes Raman scattering (CARS) as light generating mechanism in Raman devices and as optical analysis tool in spectroscopy. Next, with respect to the light generating functionality of CARS, we briefly review the latest progress on CARS-based Raman wavelength ...
Vermeulen, Nathalie, Debaes, Christof, Thienpont, Hugo   +2 more
openaire   +2 more sources