Results 91 to 100 of about 291 (135)
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Quantitative Coherent Anti-Stokes Raman Scattering (CARS) Microscopy
The Journal of Physical Chemistry B, 2011The 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. +6 more
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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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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 in Raman lasers and Raman wavelength converters
Laser & Photonics Reviews, 2010AbstractIn 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 +2 more
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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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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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Applications of coherent anti-Stokes Raman scattering in silicon photonics
SPIE Proceedings, 2010In 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 +2 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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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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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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