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Stimulated Brillouin and Raman scattering for the generation of short excimer laser pulses

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2 Author(s)
Nassisi, V. ; Dept. of Phys., Lecce Univ., Italy ; Pecoraro, A.

In this experimental work, the SBS and SRS processes were used in order to produce UV laser beams of good optical quality and short time duration. An XeCl oscillator and a double-pass amplifier with a phase-conjugate mirror via stimulated Brillouin scattering, generate the laser beam at 308 nm to pump a Raman cell. The oscillator pulse was 11 ns long, while the amplified phase-conjugate beam duration could vary from 3.3 to 1.5 ns, due to the compression operated by the Brillouin mirror. When this last laser beam was focused into a Raman cell containing methane at 30 atm, the shortest backward stimulated Raman scattering pulse at 338.4 nm was 170 ps long with 0.4 ml of energy. The 338.4-nm wavelength is interesting for the production of short bunches of cold electrons from Mg and Zn targets

Published in:

Quantum Electronics, IEEE Journal of  (Volume:29 ,  Issue: 9 )