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《Acta Photonica Sinica》 2018-10
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Dual-wavelength Passively Q-switched Yb∶GdYSiO_5 Laser Based on WS_2 Saturable Absorber Mirror

GAO Zi-ye;ZHU Jiang-feng;GONG Shuang;TIAN Jin-rong;WU Zheng-mao;School of Physical Science and Technology,Southwest University;School of Mathematics and Statistics,Southwest University;School of Physics and Optoelectronic Engineering,Xidian University;College of Applied Sciences,Beijing University of Technology;  
A dual-wavelength passively Q-switched Yb∶GdYSiO_5 laser based on a W_S2 saturable absorber mirror was proposed.The WS_2 nanoplatelets solution was coated on a BK7 glass substrate with highreflective-index thin polymer to be a WS_2 saturable absorber mirror for starting Q-switching operation.By tuning the resonant cavity and selecting a suitable pumping power,the stable Q-switched laser pulses at 1051 nm and 1091 nm were simultaneously generated with a 976-nm fiber-coupled diode laser as pump source.The laser pulses had a pulse duration of 8.4μs,a repetition rate of 2.9 kHz,and an average output power of 125 mW,respectively.
【Fund】: The National Natural Science Foundation of China(Nos.61475127 61575163 61775184 61805205);; the Fundamental Research Funds for the Central Universities(No.XDJK2018C079);; the China Postdoctoral Science Foundation(No.2018M633303);; the Doctor Fund from Southwest University(No.SWU110645)
【CateGory Index】: TN248
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