Second Harmonic Generation of Self-Mode-Locked DD2-Laser Radiation in GaSe and GaSeS Crystals

作者：Genin D E^*; Beloplotov D V; Sitnikov A G; Panchenko A N; Sarkisov S Yu; Chernyshov A I

来源：Russian Physics Journal, 2014, 56(11): 1267-1273.

DOI：10.1007/s11182-014-0171-4

• second harmonic generation
• CO2 laser
• GaSe crystal
• GaSe1-xSx
• self-mode-locking.

A TEA CO2 laser generating at the wavelength lambda = 10.6 mu m in the modes of free lasing and self-mode-locking was used to obtain and compare second harmonic generation (SHG) in GaSe and GaSe0.7S0.3 crystals. With the self-mode-locked laser, a 5-times higher energy efficiency of SHG was obtained. The efficiency of SHG in the GaSe0.7S0.3 crystal and its second-order nonlinear susceptibility were estimated and compared with their values for undoped GaSe.

• 出版日期2014-3