Title :
Effect of carrier heating on the wavelength chirp of ultrashort laser pulses in semiconductor traveling wave amplifiers
Author :
Sutkus, Kestutis ; Shum, Kai ; Alfano, R.R. ; Delfyett, Peter J.
Author_Institution :
Inst. for Ultrafast Spectrosc. & Lasers, City Coll. of New York, NY, USA
fDate :
3/1/1994 12:00:00 AM
Abstract :
The effect of the carrier heating is numerically studied. It is shown that the spectrum of the optical pulses is blue shifted when the duration of the pulse tail is comparable to or shorter than the relaxation time of heated carriers. The results are in good agreement with the experimental data on an AlGaAs/GaAs traveling wave amplifier.<>
Keywords :
carrier density; carrier relaxation time; high-speed optical techniques; hot carriers; laser theory; semiconductor lasers; blue shift; carrier heating; pulse tail duration; relaxation time; semiconductor traveling wave amplifiers; ultrashort laser pulses; wavelength chirp; Charge carrier density; Chirp; Equations; Heating; Optical pulses; Optical pumping; Pulse amplifiers; Semiconductor lasers; Semiconductor optical amplifiers; Stimulated emission;
Journal_Title :
Photonics Technology Letters, IEEE
