Power Characteristics of cw Second-harmonic Generation in Periodically Poled LiNbO<sub>3</sub>

Kang, Bong-Hoon; Joo, Gi-Tae; Rhee, Bum-Ku; Kang, Bong-Hoon; Joo, Gi-Tae; Rhee, Bum-Ku

doi:2010.47.5.430

J. Korean Ceram. Soc. > Volume 47(5); 2010 > Article

Journal of the Korean Ceramic Society 2010;47(5): 430.
doi: https://doi.org/10.4191/kcers.2010.47.5.430

Power Characteristics of cw Second-harmonic Generation in Periodically Poled LiNbO₃

Bong-Hoon Kang, Gi-Tae Joo¹, Bum-Ku Rhee²

Department of Visual Optics, Far East University
¹Department of Materials Science and Engineering, Seoul National University of Technology
²Department of Physics, Sogang University

ABSTRACT

We verified through a noncritical phase-matched second-harmonic generation experiment that the periodically-poled $LiNbO_3$ (PPLN) had a large effective nonlinear optical coefficient, demonstrating that the QPM grating was uniform throughout the entire length of PPLN. The quasi-phase matching temperature was $193.4^{circ}C$. The maximum SHG output power at the fundamental power of 2.0 W was found to be 18.0 mW; generated second-harmonic beam was found to have no photorefractive effect.

Key words: Periodically poled $LiNbO_3$ (PPLN), Quasi-phase matching, Second-harmonic generation, Photorefractive effect