TY - JOUR
T1 - Frequency up-conversion of a discharge pumped molecular fluorine laser by stimulated Raman scattering in H2
AU - Kakehata, Masayuki
AU - Hashimoto, Etsu
AU - Kannari, Fumihiko
AU - Obara, Minoru
PY - 1991/1/1
Y1 - 1991/1/1
N2 - By exciting 10-atm He/F2 gas mixtures by electric discharge at 66MW/cm3, a specific output energy of 2.9J/1 (83mJ) has been obtained in the F2 laser (157.6nm). To extend an available laser wavelength region with high output laser energies in the vacuum ultraviolet, frequency conversion of the laser radiation by stimulated Raman scattering in H2 has been demonstrated for the first time. The laser energy focused into a Raman cell was about 10mJ (22ns FWHM), which corresponds to the focused intensity of 141MW/cm2. At H2 pressure of 5atm, 1st and 2nd Stokes lines (168.6nm, 181.4nm) and 1st anti-Stokes line (147.9nm) were observed. The energy conversion efficiency was approx. 10% for the 1st Stokes line, approx.2% for the 2nd Stokes line, and approx.0.8% for the 1st anti-stokes line at a 10atm H2.
AB - By exciting 10-atm He/F2 gas mixtures by electric discharge at 66MW/cm3, a specific output energy of 2.9J/1 (83mJ) has been obtained in the F2 laser (157.6nm). To extend an available laser wavelength region with high output laser energies in the vacuum ultraviolet, frequency conversion of the laser radiation by stimulated Raman scattering in H2 has been demonstrated for the first time. The laser energy focused into a Raman cell was about 10mJ (22ns FWHM), which corresponds to the focused intensity of 141MW/cm2. At H2 pressure of 5atm, 1st and 2nd Stokes lines (168.6nm, 181.4nm) and 1st anti-Stokes line (147.9nm) were observed. The energy conversion efficiency was approx. 10% for the 1st Stokes line, approx.2% for the 2nd Stokes line, and approx.0.8% for the 1st anti-stokes line at a 10atm H2.
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M3 - Conference article
AN - SCOPUS:0025885944
SN - 0277-786X
VL - 1397
SP - 185
EP - 189
JO - Proceedings of SPIE - The International Society for Optical Engineering
JF - Proceedings of SPIE - The International Society for Optical Engineering
IS - pt 1
T2 - 8th International Symposium on Gas Flow and Chemical Lasers Part 1 (of 2)
Y2 - 10 September 1990 through 14 September 1990
ER -