A high energy, wavelength and repetition rate tunable eye-safe picosecond optical parametric oscillator. (15th February 2019)

• Record Type: Journal Article
• Authors: Liu, Ke; He, Li-Jiao; Peng, Qin-Jun; Wang, Xiao-Jun; Bo, Yong; Liu, Zhao; Yang, Feng; Zong, Nan; Yuan, Lei; Yang, Jing; Cui, Da-Fu; Xu, Zu-Yan
• Is Part Of: Laser physics letters. Volume 16:Number 4(2019:Apr.)
• Publication Date: 2019-02-15
• Subjects: ultrafast laser -- nonlinear optics -- wavelength tunable -- parametric oscillator; Lasers -- Periodicals; Physics -- Periodicals; 621.366
• DOI: 10.1088/1612-202X/ab00fc
• Languages: English
• ISSNs: 1612-2011

Abstract

Abstract: A wavelength and pulse repetition rate (PRR) tunable eye-safe picosecond (ps) optical parametric oscillator (OPO) with high energy is developed using a novel method that operates the OPO in a ps regenerative amplifier (RA). With this method, the PRR can be conveniently tuned and a compact kHz ps OPO can be achieved with a pulse energy of 1–3 orders of magnitude higher than previous works. Based on an angle phase matching type II ( θ = 41.4°, ϕ = 0°) KTA crystal, signal wavelength tunability from 1501 nm to 1565 nm is realized at the PRRs of 5 kHz and 10 kHz, respectively. The highest pulse energy of 21.6 µ J with a pulse width of about 6 ps is obtained at the PRR of 5 kHz and a wavelength of 1532 nm.