A novel beam-steering external cavity diode laser using an intracavity lead lanthanum zirconate titanate (PLZT) electro-optic ceramic deflector is proposed and demonstrated experimentally. The laser consists of a semiconductor laser with single mode fiber coupled output, polarization controller, PLZT electro-optic ceramic deflector, and output concave mirror. By applying proper driven electrical signals on the PLZT electro-optic deflector, the beam deflection angle achieves 5.8 mrad at 1 000 V. A high-speed beam-steering property with less than 120-ns switching time is also observed. Moreover, a good beam quality with Gaussian spatial profile and a linear polarization state are obtained.
© 2011 Chinese Optics Letters
(140.0140) Lasers and laser optics : Lasers and laser optics
(140.2020) Lasers and laser optics : Diode lasers
(230.0230) Optical devices : Optical devices
(230.2090) Optical devices : Electro-optical devices
Min Gao, Qing Ye, Zuoren Dong, Zhenglan Bian, Zujie Fang, Haiwen Cai, and Ronghui Qu, "Beam steering of external cavity diode laser by an intracavity electro-optic ceramic deflector," Chin. Opt. Lett. 9, 081406-081406 (2011)