title: Room-temperature, continuous-wave 1-W green power by single-pass frequency doubling in a bulk periodically poled MgO:LiNbO3 crystal.
abstract: Continuous-wave high-power green light generation at room temperature is reported in a single-pass frequency-doubling configuration with bulk periodically poled MgO:LiNbO3 crystal placed outside a diode end-pumped Nd:GdVO4 laser. The MgO:LiNbO3 samples of 6.95-microm domain period, uniform periodicity, and 50% duty cycle along the entire crystal length are fabricated by use of a high-voltage multipulse poling method. A maximum power of 1.18 W at 531 nm with 16.8% conversion efficiency is obtained from a 2-mm-thick, 25-mm-long MgO:LiNbO3 crystal; the corresponding internal green power and conversion efficiency are 1.38 W and 19.6%, respectively, whereas the normalized conversion efficiency is 3.3%/W.
authors.affiliation: Laser Research Center, Institute for Molecular Science, 38 Nishigonaka, Okazaki 444-8585, Japan. npavel@ims.ac.jp
authors.forename: N
authors.initials: N
authors.lastname: Pavel
authors.forename: I
authors.initials: I
authors.lastname: Shoji
authors.forename: T
authors.initials: T
authors.lastname: Taira
authors.forename: K
authors.initials: K
authors.lastname: Mizuuchi
authors.forename: A
authors.initials: A
authors.lastname: Morikawa
authors.forename: T
authors.initials: T
authors.lastname: Sugita
authors.forename: K
authors.initials: K
authors.lastname: Yamamoto