Open AccessEfficient second harmonic generation of double-end diffusion-bonded Nd:YVO_4 self-Raman laser producing 79 W yellow light
Author(s) -
Heyuan Zhu,
Yucong Duan,
Ge Zhang,
Chun Huang,
Yong Wei,
Shen Huang,
Yuxi Zheng,
Lei Huang,
Zhenqiang Chen
Publication year - 2009
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.17.021544
Subject(s) - optics , materials science , raman spectroscopy , laser , energy conversion efficiency , duty cycle , second harmonic generation , raman scattering , optoelectronics , power (physics) , physics , quantum mechanics
A high power and efficient 588 nm yellow light is demonstrated through intracavity frequency doubling of an acousto-optic Q-switched self-frequency Raman laser. A 30-mm-length double-end diffusion-bonded Nd:YVO(4) crystal was utilized for efficient self-Raman laser operation by reducing the thermal effects and increasing the interaction length for the stimulated Raman scattering. A 15-mm-length LBO with non-critical phase matching (theta = 90 degrees, phi = 0 degrees) cut was adopted for efficient second-harmonic generation. The focus position of incident pump light and both the repetition rate and the duty cycle of the Q-switch have been optimized. At a repetition rate of 110 kHz and a duty cycle of 5%, the average power of 588 nm light is up to 7.93 W while the incident pump power is 26.5 W, corresponding to an overall diode-yellow conversion efficiency of 30% and a slope efficiency of 43%.