Title :
Fourth harmonic generation of a high-repetition rate Nd:YAG laser in CsLiB/sub 6/O/sub 10/ crystal
Author :
Murse, K. ; Yoshimura, M. ; Kamimura, T. ; Nakai, K. ; Mori, Y. ; Sasaki, T. ; Matsumoto, Y. ; Okada, Y.
Author_Institution :
Dept. of Electr. Eng., Osaka Univ., Japan
fDate :
Aug. 30 1999-Sept. 3 1999
Abstract :
We have used as a fundamental source a diode-pumped high-repetition rate Nd:YAG laser (Spectra-Physics T40-X30-106Q) which has a pulse width of 25 ns at 4 kHz and a beam waist of 500 /spl mu/m nonlinear optical (NLO) crystal for second harmonic generation (SHG) was a noncritically phase-matched type-1 LiB/sub 3/O/sub 5/ (LBO) crystal with AR coating at 148/spl deg/C and its length was 12 mm. We prepared two uncoated CsLiB/sub 6/O/sub 10/ (CLBO) crystals with lengths of 10 and 15 mm and an AR coated /spl beta/-BaB/sub 2/O/sub 4/ (BBO) crystal with length of 8 mm. Both CLBO and BBO are type-1 phase matching. We focused a laser beam in order to achieve high conversion efficiency and compared three samples. The conversion efficiency of FHG is shown as a function of average power of 0.532 /spl mu/m light.
Keywords :
caesium compounds; laser beam effects; optical harmonic generation; 500 micrometre; CsLiB/sub 6/O/sub 10/; CsLiB/sub 6/O/sub 10/ crystal; LiB/sub 3/O/sub 5/; Spectra-Physics T40-X30-106Q; YAG:Nd; YAl5O12:Nd; diode-pumped high-repetition rate Nd:YAG laser; fourth harmonic generation; high-repetition rate Nd:YAG laser; nonlinear optical crystal; second harmonic generation; type-1 phase matching; Coatings; Crystals; Diodes; Frequency conversion; Laser beams; Nonlinear optics; Optical frequency conversion; Optical harmonic generation; Optical pulse generation; Space vector pulse width modulation;
Conference_Titel :
Lasers and Electro-Optics, 1999. CLEO/Pacific Rim '99. The Pacific Rim Conference on
Conference_Location :
Seoul, South Korea
Print_ISBN :
0-7803-5661-6
DOI :
10.1109/CLEOPR.1999.811335
