Efficient second harmonic generation of double-end diffusion-bonded Nd:YVO4 self-Raman laser producing 7.9 W yellow light.
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%.
Zhu
Haiyong
H
Key Laboratory of Optoelectronic Materials Chemistry and Physics, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian, China.
Duan
Yanmin
Y
Zhang
Ge
G
Huang
Chenghui
C
Wei
Yong
Y
Shen
Hongyuan
H
Zheng
Yiqun
Y
Huang
Lingxiong
L
Chen
Zhenqiang
Z
D003460:Crystallization; D004058:Diffusion; D004867:Equipment Design; D007834:Lasers; D008027:Light; D009354:Neodymium / Q000737:chemistry*; D013059:Spectrum Analysis, Raman / Q000379:methods*; D013997:Time Factors; D014639:Vanadium / Q000737:chemistry*; D015019:Yttrium / Q000737:chemistry*
D014639:Vanadium; D009354:Neodymium; D015019:Yttrium