Title :
Coherent pulsed injection seeding of two gain-switched semiconductor lasers
Author :
Chauchard, E.A. ; Wey, J.S. ; Lee, Chi H. ; Burdge, G.
Author_Institution :
Dept. of Electr. Eng., Maryland Univ., College Park, MD, USA
Abstract :
High-power, narrow-spectrum, short pulses at a wavelength near 830 nm are needed for optical logic applications. The authors report the generation of two coherent trains of pulses by pulsed injection seeding of two gain-switched semiconductor lasers with one mode-locked master oscillator. The available power was doubled and both lasers emit in nearly identical spectral lines. Short pulses (30-50 ps) are generated at a repetition rate of 1.9 GHz. The spectrum is reduced to a single mode cluster and shows a 1.7 AA wide chirp suitable for pulse compression. The peak power is 0.1 W for each pulse train. The capability of this technique for coherent power combining is demonstrated.<>
Keywords :
high-speed optical techniques; laser mode locking; optical logic; optical switches; semiconductor junction lasers; semiconductor switches; 0.1 W; 30 to 50 ps; 830 nm; IR; available power; clocks; coherent power combining; coherent trains; diode lasers; gain-switched semiconductor lasers; mode-locked master oscillator; narrow-spectrum; optical logic; peak power; pulse compression; pulsed injection seeding; repetition rate; short pulses; single mode cluster; spectral lines; wide chirp; Chirp; Laser mode locking; Logic; Optical pulse compression; Optical pulse generation; Optical pulses; Oscillators; Power lasers; Semiconductor lasers; Stimulated emission;
Journal_Title :
Photonics Technology Letters, IEEE
