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http://dx.doi.org/10.3807/JOSK.2013.17.1.005

High Power Continuous-Wave and Graphene Q-switched Operation of Er:YAG Ceramic Lasers at ~1.6 ㎛  

Wang, Yong (Key Laboratory of Micro and Nano Photonic Structures (Ministry of Education), Department of Optical Science and Engineering, Fudan University)
Chen, Hao (Key Laboratory of Micro and Nano Photonic Structures (Ministry of Education), Department of Optical Science and Engineering, Fudan University)
Shen, Deyuan (Key Laboratory of Micro and Nano Photonic Structures (Ministry of Education), Department of Optical Science and Engineering, Fudan University)
Zhang, Jian (School of Physical Science and Electronic Engineering, Jiangsu Normal University)
Tang, Dingyuan (School of Physical Science and Electronic Engineering, Jiangsu Normal University)
Publication Information
Journal of the Optical Society of Korea / v.17, no.1, 2013 , pp. 5-9 More about this Journal
Abstract
We report on high-power continuous-wave operations of an Er:YAG ceramic laser in-band pumped by a cladding-pumped Er,Yb fiber laser at 1532 nm. With an output coupler of 10% transmission, the ceramic laser yielded 16.7 W of continuous-wave output at 1645 nm for 28.8 W of incident pump power, corresponding to a slope efficiency of 61.0% with respect to the incident pump power. The lasing wavelength switched to 1617 nm when output couplers of > 20% transmission were used. Up to 16.2 W of 1617 nm output was generated for 33.0 W of incident pump power, corresponding to a slope efficiency of 51.8%. Graphene Q-switched operation of Er:YAG cermic laser at 1645 nm was also demonstrated with stable pulses of 30-74 kHz repetition rates and 1.5-6.4 ${\mu}s$ pulse widths.
Keywords
Transparent ceramic; Er:YAG; 1.6 ${\mu}m$ laser; Graphene; Q-switched operation;
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