Title :
Optical parametric amplification of femtosecond ultraviolet laser pulses
Author :
Kurdi, Gábor ; Osvay, Károly ; Csatári, Márta ; Ross, Ian N. ; Klebniczki, József
Author_Institution :
Res. Group on Laser Phys., Univ. of Szeged, Hungary
Abstract :
Broad-band amplification of femtosecond laser pulses using the scheme of noncollinear optical chirped pulse parametric amplification is modeled. The effect of two-photon absorption at the pump wavelength was also taken into account. The signal pulses range from 220 to 410 nm with pump pulses at 267, 248, and 213 nm. The best four crystals chosen among 12 possible ones are BBO, KDP, CLBO, and LB4. In an experiment, 30-fs laser pulses at 400 nm were amplified in a BBO crystal pumped by 267 nm pulses, exhibiting a single pass gain of 3550. The gain was found spectrally flat within the available 17-nm bandwidth of the signal pulse.
Keywords :
barium compounds; caesium compounds; high-speed optical techniques; lithium compounds; optical materials; optical parametric amplifiers; optical pumping; potassium compounds; two-photon spectra; ultraviolet sources; 220 to 410 nm; BBO; BBO crystal; BaB2O4; CLBO crystal; CsLiB6O10; KDP; KDP crystal; KH2PO4; LB4 crystal; broadband amplification; chirped pulse amplification; femtosecond laser pulses; noncollinear optical amplification; optical parametric amplification; pump pulses; single pass gain; spectrally flat gain; two-photon absorption; ultraviolet laser pulses; Chirp; Electromagnetic wave absorption; Laser modes; Nonlinear optics; Optical pulses; Optical pumping; Pulse amplifiers; Pump lasers; Stimulated emission; Ultrafast optics;
Journal_Title :
Selected Topics in Quantum Electronics, IEEE Journal of
DOI :
10.1109/JSTQE.2004.837706
