Title :
Passive Q-switching of an intracavity frequency doubled diode-pumped Nd:YVO/sub 4//KTP green laser with Cr/sup 4+/:YAG
Author_Institution :
Precision Instrum. Dev. Centre, Nat. Sci. Council, Hsinchu, Taiwan
Abstract :
A compact diode-pumped green-pulse laser has been demonstrated by using Cr/sup 4+/:YAG as a saturable absorber in a simple cavity formed by a coated Nd:YVO/sub 4/ crystal and a coated KTP crystal. When continuous-wave (CW) pumped with a fiber-coupled laser diode, the laser produces green pulses of 20-35-ns duration at 532 nm, with a repetition rate of 15-70 kHz. The highest green peak power was 80.8 W, obtained at 1.2 W of pump power, which is 320 times enhancement in comparison to a green output power of 250 mW under CW.
Keywords :
Q-switching; chromium; laser cavity resonators; laser transitions; neodymium; optical harmonic generation; optical pumping; optical saturable absorption; potassium compounds; solid lasers; titanium compounds; yttrium compounds; 1.2 W; 15 to 70 kHz; 20 to 35 ns; 250 mW; 532 nm; 80.8 W; CW pump; Cr/sup 4+/:YAG; KTP; KTiOPO4; YAG:Cr; YAl5O12:Cr; YVO/sub 4/:Nd; coated KTP crystal; coated Nd:YVO/sub 4/ crystal; compact diode-pumped green-pulse laser; fiber-coupled laser diode; green peak power; intracavity frequency doubled diode-pumped Nd:YVO/sub 4//KTP green laser; passive Q-switching; pump power; repetition rate; saturable absorber; simple cavity; Chemical lasers; Chromium; Diode lasers; Fiber lasers; Frequency; Laser excitation; Power generation; Pump lasers; Semiconductor diodes; Solid lasers;
Journal_Title :
Photonics Technology Letters, IEEE
