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Title: Frequency shift and asymmetric line shape of the fourth anti-Stokes component from a hydrogen Raman shifter

Abstract

We have measured the spectral properties of the fourth anti-Stokes component of the output of a pressurized, molecular hydrogen, Raman shifter pumped by the intense output of a frequency-doubled narrowband pulsed dye laser. All the observed line shapes are asymmetric, with full widths at half-maximum ranging from 0.3 to 0.8 cm/sup -1/. The spectral peak of the Raman-shifted light varies linearly with the intensity of the pump light and is given by sigma(rho,I) = sigma(rho) + AI. The previously measured density-dependent Stokes shift is sigma(rho), the intensity of the laser is I, and A is 1.5 +- 0.2 cm/sup -1//(TW/cm/sup 2/). The electric field-induced shift and asymmetric line shape limit the accuracy and resolution of spectroscopic measurements made with light from a hydrogen Raman shifter. We propose that these observations may be explained by the ac Stark effect in the Raman shifting medium.

Authors:
;
Publication Date:
Research Org.:
Argonne National Laboratory, Chemistry Division, 9700 South Cass Avenue, Argonne, Illinois 60439
OSTI Identifier:
6574912
Resource Type:
Journal Article
Journal Name:
Appl. Opt.; (United States)
Additional Journal Information:
Journal Volume: 27:24
Country of Publication:
United States
Language:
English
Subject:
74 ATOMIC AND MOLECULAR PHYSICS; 42 ENGINEERING; HYDROGEN; COHERENT SCATTERING; RAMAN SPECTRA; LASERS; TUNING; FREQUENCY CONVERTERS; LINE WIDTHS; MULTI-PHOTON PROCESSES; SPECTRAL SHIFT; STARK EFFECT; XENON; ELEMENTS; FLUIDS; GASES; NONMETALS; RARE GASES; SCATTERING; SPECTRA; 640302* - Atomic, Molecular & Chemical Physics- Atomic & Molecular Properties & Theory; 420300 - Engineering- Lasers- (-1989)

Citation Formats

Glab, W L, and Hessler, J P. Frequency shift and asymmetric line shape of the fourth anti-Stokes component from a hydrogen Raman shifter. United States: N. p., 1988. Web. doi:10.1364/AO.27.005123.
Glab, W L, & Hessler, J P. Frequency shift and asymmetric line shape of the fourth anti-Stokes component from a hydrogen Raman shifter. United States. https://doi.org/10.1364/AO.27.005123
Glab, W L, and Hessler, J P. 1988. "Frequency shift and asymmetric line shape of the fourth anti-Stokes component from a hydrogen Raman shifter". United States. https://doi.org/10.1364/AO.27.005123.
@article{osti_6574912,
title = {Frequency shift and asymmetric line shape of the fourth anti-Stokes component from a hydrogen Raman shifter},
author = {Glab, W L and Hessler, J P},
abstractNote = {We have measured the spectral properties of the fourth anti-Stokes component of the output of a pressurized, molecular hydrogen, Raman shifter pumped by the intense output of a frequency-doubled narrowband pulsed dye laser. All the observed line shapes are asymmetric, with full widths at half-maximum ranging from 0.3 to 0.8 cm/sup -1/. The spectral peak of the Raman-shifted light varies linearly with the intensity of the pump light and is given by sigma(rho,I) = sigma(rho) + AI. The previously measured density-dependent Stokes shift is sigma(rho), the intensity of the laser is I, and A is 1.5 +- 0.2 cm/sup -1//(TW/cm/sup 2/). The electric field-induced shift and asymmetric line shape limit the accuracy and resolution of spectroscopic measurements made with light from a hydrogen Raman shifter. We propose that these observations may be explained by the ac Stark effect in the Raman shifting medium.},
doi = {10.1364/AO.27.005123},
url = {https://www.osti.gov/biblio/6574912}, journal = {Appl. Opt.; (United States)},
number = ,
volume = 27:24,
place = {United States},
year = {1988},
month = {12}
}