Multi-watt power blue light generation by intracavity sum- frequency-mixing in KTiOPO4 crystal.
In this paper, a high power blue laser at 447 nm was obtained by intracavity sum-frequency-mixing of a diode-side-pumped Q-switched Nd:YAlO(3)(Nd:YAP) laser operating at 1341.4 nm. A type-I critical phase matching LiB(3)O(5) (LBO) crystal and type-II critical phase matching KTiOPO(4) (KTP) crystal were used for second harmonic generation and third harmonic generation, respectively. The phase matching condition of the KTP crystal was researched. The results show that the KTP has superiority in intracavity sum-frequency-mixing blue light generation. 4.76 W blue light output was achieved at 4.6 kHz with the pulse width of 190ns. The fluctuation of output power was better than 3% at the output power of 4.76 W during half an hour.
Haiyong
Zhu
Z
Fujian Institute of Research on Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, China.
Ge
Zhang
Z
Chenghui
Huang
H
Yong
Wei
W
Lingxiong
Huang
H
Zhenqiang
Chen
C
D003116:Color; D004867:Equipment Design; D019544:Equipment Failure Analysis; D053844:Lasers, Solid-State; D008029:Lighting / Q000295:instrumentation* / Q000379:methods; D012666:Semiconductors