Thermal characteristic analysis of laser diode side-pumped regenerative amplifier for kHz picosecond laser - Details

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Abstract：

The　influence　of　heat　effect　produced　by　gain　medium　and　electro-optic　crystal　working　at　high　repetition　rate　on　a　regenerative　amplifier　is　investigated　in　this　paper.　Depolarization　loss　induced　by　heat　generated　in　Nd:YAG　crystal　and　thermal　absorption　of　KD*P　electro-optic　crystal　were　measured,　and　a　compensating　element　to　compensate　the　loss　of　thermal　depolarization　was　used　effectively.　A　BBO　Pockel　cell　for　regenerative　amplifier　was　designed　by　ourself,　and　effective　amplification　is　obtained.　An　output　pulse　energy　at　1064　nm　is　obtained　from　the　picosecond　laser　pulse　regenerative　amplifier　by　laser　diode　(LD)　side-pumped　with　3　mJ　each　pulse　and　amplification　radio　of　3×106　at　1　kHz　repetition　rate.

Keyword：

Yttrium aluminum garnet Optical pumping Diode amplifiers Diodes Depolarization Pulse repetition rate Picosecond lasers

Author Community：

[ 1 ] [Chang, Liang]Institute of Laser Engineering, Beijing University of Technology, Beijing 100124, China
[ 2 ] [Chen, Meng]Institute of Laser Engineering, Beijing University of Technology, Beijing 100124, China
[ 3 ] [Li, Gang]Institute of Laser Engineering, Beijing University of Technology, Beijing 100124, China
[ 4 ] [Ma, Yunfeng]Academy of Opto-Electronics, Chinese Academy of Sciences, Beijing 100080, China
[ 5 ] [Fan, Zhongwei]Beijing GK Laser Technology Co. Ltd, Beijing 100085, China
[ 6 ] [Fan, Zhongwei]Academy of Opto-Electronics, Chinese Academy of Sciences, Beijing 100080, China
[ 7 ] [Niu, Gang]Beijing GK Laser Technology Co. Ltd, Beijing 100085, China
[ 8 ] [Yu, Jin]Academy of Opto-Electronics, Chinese Academy of Sciences, Beijing 100080, China
[ 9 ] [Liu, Yang]Academy of Opto-Electronics, Chinese Academy of Sciences, Beijing 100080, China
[ 10 ] [Zhang, Xue]Academy of Opto-Electronics, Chinese Academy of Sciences, Beijing 100080, China