10 mJ single-frequency, injection-seeded Q-switched Er:YAG laser pumped by a 1470 nm fiber-coupled LD. (16th January 2018)

• Record Type: Journal Article
• Authors: Gao, C Q; Shi, Y; Ye, Q; Wang, S; Na, Q X; Wang, Q; Gao, M W
• Is Part Of: Laser physics letters. Volume 15:Number 2(2018:Feb.)
• Publication Date: 2018-01-16
• Subjects: injection-locked -- solid-state lasers -- Er:YAG laser -- diode-pumped -- Q-switching; Lasers -- Periodicals; Physics -- Periodicals; 621.366
• DOI: 10.1088/1612-202X/aa9ac6
• Languages: English
• ISSNs: 1612-2011

Abstract

Abstract: A 1645 nm injection-seeded Q-switched Er:YAG laser resonantly pumped by a 1470 nm fiber-coupled laser diode is demonstrated with a non-planar ring oscillator as a seed laser to realize the single-frequency operation. The maximum output pulse energy of the laser is 10.1 mJ, corresponding to a pulse width of 205 ns at a repetition rate of 200 Hz. The half-width of the pulse spectrum is 2.44 MHz measured by a heterodyne technique. The fluctuation of the center frequency of the pulsed laser is 1.43 MHz (RMS) in 1 h. To the best of our knowledge, this is highest energy obtained from a single-frequency, injection-seeded Er:YAG laser pumped by a laser diode.