Title :
Development of a two-wavelength OPO generating 270-mJ infrared pulses for medical applications
Author :
Sumiyoshi, Tetsumi ; Otani, Yoshio ; Matsumoto, Satoko ; Sekita, Hitoshi ; Okagami, Yoshihide ; Obara, Minoru
Author_Institution :
Cyber Laser Inc., Tokyo, Japan
Abstract :
An optical parametric oscillator (OPO) pumped by a pulsed LD-pumped Nd:YAG laser that simultaneously emits two infrared radiation in 1.7 and 3 μm regions is developed. In order to efficiently perform on the wavelength mixing, a periodically poled lithium niobate (PPLN) in the OPO resonator is employed. The total output energy obtained was 270 mJ consisting of 120 mJ in the 3 μm region and 150 mJ in the 1.7 μm region at a repetition rate of 40 Hz and a pulse duration of 500 μs.
Keywords :
infrared sources; light coherence; lithium compounds; multiwave mixing; optical parametric oscillators; optical pulse generation; optical pumping; 1.7 mum; 120 mJ; 150 mJ; 270 mJ; 3 mum; 40 Hz; 500 mus; LiNbO3; OPO; YAG:Nd; YAl5O12:Nd; infrared pulses; medical applications; optical parametric oscillator; periodically poled lithium niobate; pulsed LD-pumped laser; wavelength mixing; Biomedical equipment; Biomedical optical imaging; Medical services; Nonlinear optics; Optical mixing; Optical pulse generation; Optical pumping; Optical resonators; Pulse generation; Stimulated emission;
Conference_Titel :
Lasers and Electro-Optics Society, 2004. LEOS 2004. The 17th Annual Meeting of the IEEE
Print_ISBN :
0-7803-8557-8
DOI :
10.1109/LEOS.2004.1363486
