Title :
Ultrafast operation of optically pumped resonant periodic gain GaAs surface emitting lasers
Author :
Mukherjee, A. ; Mahbobzadeh, M. ; Schaus, C.F. ; Brueck, S.R.J.
Author_Institution :
Dept. of Electr. & Comput. Eng., New Mexico Univ., Albuquerque, NM, USA
Abstract :
Generation and characterization of picosecond optical pulses from vertical-cavity resonant-periodic-gain GaAs-AlGaAs surface-emitting lasers optically pumped by picosecond dye-laser pulses is reported. The output pulseshape was obtained from the cross correlation of pump and signal pulses. Dependence of signal pulsewidth and pulse delay on pump power were investigated. The results are in good agreement with a single rate equation model of the pulse formation. A cavity lifetime of 8.3 ps, compared with a gain medium transit time of approximately 0.1 ps, is determined for this very high-Q structure.<>
Keywords :
III-V semiconductors; aluminium compounds; gallium arsenide; high-speed optical techniques; laser cavity resonators; optical pumping; semiconductor junction lasers; spectral line breadth; 0.1 ps; 8.3 ps; GaAs surface emitting lasers; GaAs-AlGaAs; cavity lifetime; cross correlation; gain medium transit time; high-Q structure; optically pumped; output pulseshape; picosecond dye-laser pulses; picosecond optical pulses; pulse delay; pulse formation; pump power; pump pulses; resonant periodic gain; signal pulses; signal pulsewidth; single rate equation model; vertical-cavity; Character generation; Gallium arsenide; Laser modes; Optical pulse generation; Optical pulses; Optical pumping; Pump lasers; Resonance; Ultrafast optics; Vertical cavity surface emitting lasers;
Journal_Title :
Photonics Technology Letters, IEEE
