Filament-based stimulated Raman spectroscopy

J. H. Odhner; D. A. Romanov; R. J. Levis

doi:10.1117/12.842129

17 February 2010 Filament-based stimulated Raman spectroscopy

J. H. Odhner, D. A. Romanov, R. J. Levis

Proceedings Volume 7582, Nonlinear Frequency Generation and Conversion: Materials, Devices, and Applications IX; 75820M (2010) https://doi.org/10.1117/12.842129
Event: SPIE LASE, 2010, San Francisco, California, United States

Abstract

A new multiplexed stimulated Raman spectroscopic technique encompassing a single-shot spectral measurement range of over 3900 cm^-1 is presented. Impulsive excitation of all Raman active vibrational modes present in a medium is achieved by self-compression of a laser pulse undergoing filamentation in air, creating coherent vibrational wave-packets. These wave-packets create a macroscopic polarization of the medium that imparts sidebands on a delayed narrowband probe pulse. The background-free measurement of impulsively excited Raman modes in gas-phase N₂, O₂, H₂, CO₂, toluene, ammonia, and chloroform with a spectral resolution of 25 cm^-1 is presented.

Citation Download Citation

J. H. Odhner, D. A. Romanov, and R. J. Levis "Filament-based stimulated Raman spectroscopy", Proc. SPIE 7582, Nonlinear Frequency Generation and Conversion: Materials, Devices, and Applications IX, 75820M (17 February 2010); https://doi.org/10.1117/12.842129

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