A Near 60% Efficiency Single-Slab Nd:YAG High-Power Laser With Adjustable Pulse Duration

We report a new approach to effectively improve the optical-to-optical efficiency for quasi-continuous-wave (QCW) lasers by adjusting the pump pulse duration. During our single-slab laser test, an optical-to-optical conversion efficiency of 57% and a slope conversion of 67.8% are obtained with a max...

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Veröffentlicht in:	IEEE photonics technology letters 2019-03, Vol.31 (5), p.405-408
Hauptverfasser:	Zhang, Lin, Guo, Ya-Ding, Chen, Zhong-Zheng, Gong, Ke-Lin, Xu, Jia-Lin, Yuan, Lei, Lin, Yan-Yong, Meng, Shuai, Li, Yang, Shao, Chong-Feng, Li, Shuai, Zhang, Zhi-Feng, Bo, Yong, Peng, Qin-Jun, Cui, Da-Fu, Xu, Zu-Yan
Format:	Artikel
Sprache:	eng
Schlagworte:	Continuous radiation Efficiency Energy conversion efficiency Face-pumped high power High power lasers Lasers Nd:YAG slab laser Neodymium lasers Optical pulses Optical pumping optical to optical conversion efficiency Power generation Pulse duration Pulse repetition rate Pump lasers Quantum cascade lasers Slab lasers Slabs YAG lasers
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Zusammenfassung:	We report a new approach to effectively improve the optical-to-optical efficiency for quasi-continuous-wave (QCW) lasers by adjusting the pump pulse duration. During our single-slab laser test, an optical-to-optical conversion efficiency of 57% and a slope conversion of 67.8% are obtained with a maximum average output power of 7.3 kW, operating at a pulse repetition rate of 160 Hz with 470μs pulse duration. To the best of our knowledge, this represents the highest optical-to-optical efficiency for a QCW face-pumped Nd:YAG slab laser with such high power output ever reported.
ISSN:	1041-1135 1941-0174
DOI:	10.1109/LPT.2019.2896579