Abstract

Raman shifting to the near-infrared, when possible, provides a simple and economical alternative to the optical parametric oscillator (OPO) or difference frequency mixing approach. We report the production of 1.30- to 1.55- mu m radiation from first Stokes Raman shifting in a single-pass, open (no capillary waveguide), hydrogenfilled Raman cell (constructed in-house) pumped with a Nd:YAG/ dye laser combination operating near 900 nm. A maximum of 10 mJ (19% efficiency) of first Stokes energy was measured for the highest cell pressure (490 psia) and input pulse energy (53 mJ). The quality of the first Stokes output is similar to the dye laser output as indicated by polarization, shot-to-shot energy fluctuation, beam diameter, and linewidth. A characterization of the Stokes and antiStokes output was also conducted including one-dimensional spatial intensity profiles and output line dependence on input pulse energy and cell pressure. A large first Stokes conversion efficiency has been attributed to little production of higher-order Stokes and antiStokes lines.

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

Wallace L. Glab and Jan P. Hessler
Appl. Opt. 27(24) 5123-5126 (1988)

Increased efficiency of vacuum ultraviolet generation by stimulated anti-Stokes Raman scattering with Stokes seeding

Alexandra Goehlich, U. Czarnetzki, and H. F. Döbele
Appl. Opt. 37(36) 8453-8459 (1998)

Optimization of a Raman shifted dye laser system for DIAL applications

Upendra N. Singh, Zhiping Chu, Rita Mahon, and Thomas D. Wilkerson
Appl. Opt. 29(12) 1730-1735 (1990)

Angular distribution of high-order anti-Stokes stimulated Raman scattering in hydrogen

D. J. Brink and D. Proch
J. Opt. Soc. Am. 73(1) 23-25 (1983)

Generation of infrared radiation by stimulated Raman scattering in para-hydrogen crystal at 5 K

Mizuho Fushitani, Susumu Kuma, Yuuki Miyamoto, Hiroyuki Katsuki, Tomonari Wakabayashi, Takamasa Momose, and Andrey F. Vilesov
Opt. Lett. 28(1) 37-39 (2003)