title: Passively Q-switched photonic crystal fiber laser and intracavity optical parametric oscillator.
abstract: We report on a passively Q-switched photonic crystal fiber (PCF) laser with Cr(4+):YAG as a saturable absorber. Under a pump power of 14.2 W, the maximum pulse energy is up to 630 microJ with a pulse width of 36 ns at a repetition rate of 5.6 kHz. With an intracavity optical parametric oscillator, the passively Q-switched PCF laser is used to generate the signal wave at 1515 nm. The output pulse energy of the signal wave is found to be 140 microJ with a pulse width as short as 1.0 ns at a repetition rate of 3.3 kHz. The very short pulse width leads to the peak power up to 140 kW.
authors.affiliation: Department of Electrophysics, National Chiao Tung University, Hsinchu, Taiwan.
authors.forename: W Z
authors.initials: WZ
authors.lastname: Zhuang
authors.forename: W C
authors.initials: WC
authors.lastname: Huang
authors.forename: Y P
authors.initials: YP
authors.lastname: Huang
authors.forename: K W
authors.initials: KW
authors.lastname: Su
authors.forename: Y F
authors.initials: YF
authors.lastname: Chen