1645-nm single-frequency, injection-seeded Q-switched Er:YAG master oscillator and power amplifier

Shuo Wang; Chunqing Gao; Yang Shi; Rui Song; Quanxin Na; Mingwei Gao; Qing Wang

doi:10.1117/1.OE.57.2.026120

27 February 2018 1645-nm single-frequency, injection-seeded Q-switched Er:YAG master oscillator and power amplifier

Shuo Wang, Chunqing Gao, Yang Shi, Rui Song, Quanxin Na, Mingwei Gao, Qing Wang

Author Affiliations +

Optical Engineering, Vol. 57, Issue 2, 026120 (February 2018). https://doi.org/10.1117/1.OE.57.2.026120

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.

Citation Download Citation

Shuo Wang, Chunqing Gao, Yang Shi, Rui Song, Quanxin Na, Mingwei Gao, and 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

Received: 21 November 2017; Accepted: 13 February 2018; Published: 27 February 2018

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