Ak. Rebane et al., 3RD-HARMONIC GENERATION IN AN OPTICAL-BRE AKDOWN PLASMA IN AIR IN THEFIELD OF FEMTOSECOND LASER-PULSES WITH HIGH-REPETITION-RATE, Kvantovaa elektronika, 23(4), 1996, pp. 291-292
A study was made of third-harmonic generation in a field of 200-fs pul
ses resulting from the amplified radiation of a titanium-doped sapphir
e laser in an optical break-down plasma formed in air at atmospheric p
ressure. It was shown that a low-temperature laser plasma can be used
for harmonic generation with repetition rate up to 1 kHz and power con
version efficiency of 7.10(-4).