Single aperiodically poled lithium niobate for simultaneous laser Q switching and second-harmonic generation in a 1342 nm Nd:YVO4 laser.
We report the design and experimental demonstration of an electro-optically Q-switched intracavity second-harmonic generator (ISHG) based on a single aperiodically poled lithium niobate (APLN) in a 1,342 nm Nd:YVO(4) laser. This intracavity APLN, designed using the aperiodic optical superlattice technique, can perform simultaneously as a laser Q switch and a second-harmonic generator. At approximately 200 VQ-switching voltage and a 5 kHz switching rate, we measured a pulse energy of approximately 5.7 microJ and a peak power of approximately 700 W at 671 nm from the constructed ISHG with a 5.2 W diode power based on 51% fundamental energy depletion.
Chen
Y H
YH
Department of Optics and Photonics, National Central University, Jhongli 320, Taiwan. yhchen@dop.ncu.edu.tw
Chang
W K
WK
Chang
C L
CL
Lin
C H
CH