Title :
Highly attenuating external cavity for picosecond-tunable pulse generation from gain/Q-switched laser diodes
Author :
Bouchoule, Sophie ; Stelmakh, Nikolaï ; Cavelier, Marc ; Lourtioz, Jean-Michel
Author_Institution :
Inst. d´´Electronique Fondamentale, Paris XI Univ., Orsay, France
fDate :
6/1/1993 12:00:00 AM
Abstract :
The authors analyze in detail the behavior of gain/Q-switched Fabry-Perot laser diodes coupled to a highly attenuating, selective external cavity. Radical differences are shown as compared to the case of strong external feedback used in mode locking. A strong analogy with the case of pulsed lasers with a small quasi-monochromatic injection signal is indicated. Strong chirping is observed in single-mode emission, leading to tunable picosecond pulses after compression. Experiments are carried out on two types of devices. Picosecond pulses with very high tunability (40 nm) and repetition rates (>10 GHz) are obtained from 1.3-μm gain-switched laser diodes, the minimum pulsewidth being 2.5 ps
Keywords :
Q-switching; high-speed optical techniques; laser cavity resonators; laser transitions; semiconductor lasers; 1.3 micron; attenuating external cavity; chirping is; compression; gain-switched laser diodes; gain/Q-switched Fabry-Perot laser diodes; picosecond-tunable pulse generation; repetition rates; selective external cavity; single-mode emission; tunable picosecond pulses; Chirp; Diode lasers; Fabry-Perot; Laser feedback; Laser mode locking; Optical coupling; Optical pulses; Pulse compression methods; Space vector pulse width modulation; Tunable circuits and devices;
Journal_Title :
Quantum Electronics, IEEE Journal of
