Title :
Quasi-velocity-matched electrooptic phase modulator for the synthesis of ultrashort optical pulses
Author :
Guo, Feng-Zhen ; Yu, Chang-Tai ; Chen, Lei ; Kobayashi, Tetsuro ; Chen, Ying
Author_Institution :
Dept. of Inf. & Electron. Eng., Zhejiang Univ., Hangzhou, China
fDate :
5/1/1997 12:00:00 AM
Abstract :
We report a quasi-velocity-matched electrooptic (EO) phase modulator in LiTaO3 with periodic domain inversion. It is suitable for deep modulation at high frequency and can be used to generate ultra-wide sideband signals for forming ultrashort optical pulses. In experiments, phase modulation with a modulation index of 57 rad has been successfully obtained at 16.25 GHz, and thereby optical sidebands extending over as wide as 1.85 THz (FWHM) have been attained. The sidebands produced are broad enough to form subpicosecond pulses using the chirping-compression method
Keywords :
chirp modulation; electro-optical modulation; high-speed optical techniques; lithium compounds; optical materials; optical pulse compression; phase modulation; 1.85 THz; 16.25 GHz; LiTaO3; chirping-compression method; modulation index; optical sidebands; periodic domain inversion; phase modulation; pulse synthesis; quasi-velocity-matched electrooptic phase modulator; subpicosecond pulses; ultra-wide sideband signals; ultrashort optical pulses; Electrooptic modulators; Frequency; Laser mode locking; Optical modulation; Optical pulse generation; Optical pulses; Optical resonators; Phase modulation; Power lasers; Pulse modulation;
Journal_Title :
Quantum Electronics, IEEE Journal of
