Title :
Effect of the confinement-layer composition on the internal quantum efficiency and modulation response of quantum-well lasers
Author :
Nagarajan, Radhakrishnan ; Mirin, Richard P. ; Reynolds, Thomas E. ; Bowers, John E.
Author_Institution :
Dept. of Electr. & Comput. Eng., California Univ., Santa Barbara, CA, USA
Abstract :
The authors show that the transport factor X is related to the internal quantum efficiency eta /sub i/ of the quantum-well laser, and the enhancement in X contributes significantly to a reduction of eta /sub i/. It is also shown that suppression of the thermionic emission of carriers out of the quantum well is essential to prevent the degradation of the effective differential gain in high-speed quantum-well lasers.<>
Keywords :
carrier mobility; optical modulation; semiconductor junction lasers; thermionic emission; carrier emission; confinement-layer composition; effective differential gain; high-speed quantum-well lasers; internal quantum efficiency; modulation response; semiconductor laser diodes; thermionic emission; transport factor; Degradation; Gallium arsenide; Intensity modulation; Low-frequency noise; Power lasers; Quantum well devices; Quantum well lasers; Resonance; Resonant frequency; Thermionic emission;
Journal_Title :
Photonics Technology Letters, IEEE
