Title :
Effects of hot phonons on carrier heating in quantum-well lasers
Author :
Tsai, Chin-Yi ; Lo, Yu-Hwa ; Spencer, Robert M. ; Tsai, Chin-Yao
Author_Institution :
Sch. of Electr. Eng., Cornell Univ., Ithaca, NY, USA
Abstract :
The hot phonon effects on carrier heating in quantum-well lasers are theoretically investigated. We show that the neglect of the finite lifetime of LO phonons will significantly underestimate the carrier energy relaxation time and thus underestimate the effect of carrier heating in quantum-wed lasers. We investigate the effects of carrier heating with hot phonons on the saturation and degradation of the resonant frequency in high-speed quantum-well lasers. The implications of the hot phonon effects on the design of high-speed quantum-well lasers are also discussed.<>
Keywords :
carrier relaxation time; electron-phonon interactions; hot carriers; laser theory; optical saturation; quantum well lasers; LO phonons; carrier energy relaxation time; carrier heating; degradation; design; high-speed quantum-well lasers; hot phonons; quantum-well lasers; resonant frequency; saturation; Absorption; Bandwidth; Heating; Laser theory; Phonons; Quantum well lasers; Radiative recombination; Semiconductor lasers; Spontaneous emission; Temperature;
Journal_Title :
Photonics Technology Letters, IEEE
