Enhanced second-harmonic generation in an electro-optic controlled periodically poled ferroelectric crystal.
We present a novel design of enhanced second-harmonic generation in a periodically poled ferroelectric crystal. It profits from enhanced light intensity and slowed group velocity, which occur near photonic band edges through electro-optic modulation. The designed structure, with 108 periods and a length of 322 microm, can generate a second-harmonic beam whose conversion efficiency is 2 orders of magnitude larger than the one produced by an equivalent length of quasi-phase-matching bulk medium. This result might be beneficial to the development of optics integration and compact devices.
Sheng
Yan
Y
Optical Physics Laboratory, Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing, China. shengyan@aphy.iphy.ac.cn
Li
Jingjuan
J
Cheng
Bingying
B
Zhang
Daozhong
D