Selected topics toward the experimental design of a waveguide confined raman laser wavelength conversion system

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Date

2011

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Montana State University - Bozeman, College of Engineering

Abstract

As an alternative to current visible variable-wavelength lasers, a Raman conversion laser system was studied using a hollow-core capillary. A pulsed Nd:YAG laser is frequency doubled to 532 nm using a KTP crystal prior to coupling into the capillary that is pressurized from 0 PSI to 100 PSI with either CO 2 or H 2 gas. The KTP crystal is then removed and found that the 1064 nm laser light is phase-matched when coupled into the capillary. The phase-matched coupled light produces observable third anti-Stokes light, while suppressing the higher Stokes conversion light. The methods used to couple a laser beam into a hollow-core glass capillary, examination of the acceptance angle of a KTP crystal, and the Raman conversion wavelengths due to 1064 nm laser pulses are documented in this paper.

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