27 February 2018 1645-nm single-frequency, injection-seeded Q-switched Er:YAG master oscillator and power amplifier
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Abstract
A 1645-nm injection-seeded Q-switched Er:YAG master oscillator and power amplifier system is reported. The master oscillator generates single-frequency pulse energy of 11.10 mJ with a pulse width of 188.8 ns at 200 Hz. An Er:YAG monolithic nonplanar ring oscillator is employed as a seed laser. The output pulse from the master oscillator is amplified to 14.33-mJ pulse energy through an Er:YAG amplifier, with a pulse width of 183.3 ns. The M2-factors behind the amplifier are 1.14 and 1.23 in x- and y-directions, respectively. The full width at half maximum of the fast Fourier transformation spectrum of the heterodyne beating signal is 2.84 MHz.
© 2018 Society of Photo-Optical Instrumentation Engineers (SPIE)
Shuo Wang, Shuo Wang, Chunqing Gao, Chunqing Gao, Yang Shi, Yang Shi, Rui Song, Rui Song, Quanxin Na, Quanxin Na, Mingwei Gao, Mingwei Gao, Qing Wang, Qing Wang, } "1645-nm single-frequency, injection-seeded Q-switched Er:YAG master oscillator and power amplifier," Optical Engineering 57(2), 026120 (27 February 2018). https://doi.org/10.1117/1.OE.57.2.026120 . Submission: Received: 21 November 2017; Accepted: 13 February 2018
Received: 21 November 2017; Accepted: 13 February 2018; Published: 27 February 2018
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