title: Single-frequency operation of diode-pumped 2 microm Q-switched Tm:YAG laser injection seeded by monolithic nonplanar ring laser.
abstract: We present a diode-pumped, 2mum single-frequency Q-switched Tm:YAG laser. The Q-switched laser is injection seeded by a monolithic Tm:YAG nonplanar ring oscillator with the ramp-hold-fire technique. The output energy of the 2mum single-frequency Q-switched pulse is 2.23mJ, with a pulse width of 290ns and a repetition rate of 200Hz. From the heterodyne beating measurement, the frequency difference between the seed laser and the Q-switched laser is determined to be 37.66MHz, with a half-width of the symmetric spectrum of about 2 MHz.
authors.affiliation: School of Opto-Electronics, Beijing Institute of Technology, Beijing 100081, China.
authors.forename: Chunqing
authors.initials: C
authors.lastname: Gao
authors.forename: Zhifeng
authors.initials: Z
authors.lastname: Lin
authors.forename: Mingwei
authors.initials: M
authors.lastname: Gao
authors.forename: Yunshan
authors.initials: Y
authors.lastname: Zhang
authors.forename: Lingni
authors.initials: L
authors.lastname: Zhu
authors.forename: Ran
authors.initials: R
authors.lastname: Wang
authors.forename: Yan
authors.initials: Y
authors.lastname: Zheng