ISSN:
1432-0649
Keywords:
33.20N
;
42,65C
Source:
Springer Online Journal Archives 1860-2000
Topics:
Physics
Notes:
Abstract The generation of tunable vacuum ultraviolet radiation by anti-Stokes Raman scattering of tunable ultraviolet dye-laser radiation in cold hydrogen has been investigated. The scattering efficiency of XeCl laser and Nd:YAG laser pumped commercial dye lasers and the influence of different beam profiles has been studied. Up to 12 anti-Stokes orders down to 129 nm were observed with output powers between about 20 kW at λ=191 nm and somewhat less than 100 W at λ=129 nm. The efficiency of transversely pumped lasers with an intensity peaked in the center of the beam profile was found to be higher than doughnut shaped intensity distributions. The cooling of the active gas to liquid nitrogen temperatures improved the output pulse energies 3 to 5 times on average. It was found that this intensity increase was caused mainly by the narrowing of the Raman linewidth upon cooling.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00687155
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