大功率准连续Nd_YAG陶瓷激光器研究.pdfVIP

26 3 V ol . 26, No . 3 2006 3 A CT A OPT ICA SINI CA M ar ch , 2006 : ( 2006) 0304 154 大功率准连续NdYAG 陶瓷激光器研究 纪江华 漆云凤 朱小磊 楼祺洪 ( , 20 1800) : , NdYA G 22. 2% , 22% , 1% , 5 mm 75 mm NdYAG , 230 W 1064 nm , 52. 4 % 6 1% 160 s, 0 . 8 nm , 16 mrad, N dY AG NdYAG : ; ; N dY AG; ; : T N248. 1 : A HighPower QuasiContinuousWave NdYAG Ceramic Laser Ji Jianghua Qi Yunfeng Zhu Xiaolei Lou Qihong ( Shan gha In st tu te of Opt cs an d F n e M echan cs , T he Ch n ese Aca dem y of Sc en ces , Shan gha 20 1800) Abstract: With uniformly sidearound arranged compact pumping structure , high conversion efficiency operating of diodelaserarray sidepumped NdYAG ceramic laser was demonstrated Using a 5 mm 75 mm s zed N dY AG cer am c r od w th 1% dopant fract o n of number o f atom s, the laser g ener ated a quasco nt nuou sw av e ( QCW ) output w th an averag e po w er o f about 230 W at 1064 nm , and t he output coupler transm ss on w as 22% , w h ch co rr esponded to the calculated result of 22 . 2% . T he o pt caltoopt cal conver s on eff c ency w as 52. 4 % , and the slope eff c ency w as 6 1% . Bes des, the pulse w dt h o f the beam w as detected to be 160 s, the line wi dth was less than 0 8 nm, and the beam div ergence angl e was 16 mrad The experiment r esults showed that the output power N d YAG cerami c laser was comparable to that of NdYAG singl e cry stal laser Key words: lasers; ceramic laser ; NdYAG; side pump; diode laser array 1 [ 7 ] , N dY A G N dY A G , N dY A G ( 8