Title :
Tunable External Cavity Diode Laser With a PLZT Electrooptic Ceramic Deflector
Author :
Wei, Fang ; Sun, Yanguang ; Chen, Dijun ; Xin, Guofeng ; Ye, Qing ; Cai, Haiwen ; Qu, Ronghui
Author_Institution :
Shanghai Key Lab. of All Solid-State Laser & Appl. Tech., Chinese Acad. of Sci., Shanghai, China
fDate :
3/1/2011 12:00:00 AM
Abstract :
A stable tunable diode laser which uses an electrooptic deflector incorporated into a Littrow-type external cavity as a wavelength tunable element is proposed and demonstrated. The deflector is fabricated by lead lanthanum zirconate titanate (PLZT) electrooptic ceramic with high quadratic electrooptic effect. Two half-wave plates and a large angle triangular electrode of PLZT electrooptic ceramic are designed to acquire a high frequency-voltage tuning ratio. By adjusting the voltage applied to the deflector, a large single-mode tuning range of 420 GHz (including mode hops) and a frequency-voltage tuning ratio of 840 GHz/kV have been achieved at 780.5 nm.
Keywords :
ceramics; electro-optical deflectors; electro-optical effects; lanthanum compounds; laser cavity resonators; laser modes; laser stability; laser tuning; lead compounds; optical retarders; semiconductor lasers; Littrow-type external cavity; PLZT; PLZT electrooptic ceramic deflector; electrooptic deflector; electrooptic effect; external cavity diode laser; frequency 420 GHz; frequency-voltage tuning ratio; half-wave plates; laser stability; laser tuning; lead lanthanum zirconate titanate; single-mode tuning; triangular electrode; wavelength 780.5 nm; Ceramics; electrooptic deflectors; external cavity diode laser; laser tuning;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2010.2103936
