Title :
Extreme chirped pulse oscillator (XCPO) using a theta cavity design
Author :
Lee, Shinwook ; Kim, Kyungbum ; Delfyett, Peter J., Jr.
Author_Institution :
Center for Res. & Educ. in Opt. & Lasers, Univ. of Central Florida, Orlando, FL, USA
fDate :
4/1/2006 12:00:00 AM
Abstract :
We demonstrate an extreme chirped pulse mode-locked laser, simultaneously generating near-transform-limited 3.9-ps optical pulses and ∼510-ps linearly chirped output from the oscillator. The design overcomes fundamental limitations of energy extraction and nonlinearities induced by gain dynamics so that we can increase the dc current of the semiconductor optical amplifier up to 600 mA without distortion of the pulse characteristics. The maximum average power of the stretched pulses from the 1.95-GHz harmonically mode-locked semiconductor laser is measured to be 13.4 mW at 600 mA.
Keywords :
chirp modulation; laser cavity resonators; laser mode locking; nonlinear optics; optical pulse generation; semiconductor optical amplifiers; 1.95 GHz; 13.4 mW; 3.9 ps; 510 ps; 600 mA; dc current; energy extraction; extreme chirped pulse oscillator; gain dynamics; harmonically mode-locked laser; linearly chirped output; mode locked laser; near-transform-limited optical pulses; optical nonlinearities; semiconductor laser; semiconductor optical amplifier; stretched pulses; theta cavity design; Chirp; Laser mode locking; Laser noise; Optical pulse generation; Optical pulses; Oscillators; Pulse amplifiers; Pulse measurements; Semiconductor lasers; Ultraviolet sources; Chirped fiber Bragg grating (CFBG); harmonic mode-locking; high-power semiconductor lasers; mode-locked semiconductor lasers;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2006.871695
