Title :
Empirical formulas for design and optimization of 1.5 mu m InGaAs/InGaAsP strained-quantum-well lasers
Author :
Lin, C.H. ; Lo, Y.H.
Author_Institution :
Sch. of Electr. Eng., Cornell Univ., Ithaca, NY, USA
fDate :
3/1/1993 12:00:00 AM
Abstract :
The effects of strain and number of quantum wells on optical gain, differential gain, and nonlinear gain coefficient in 1.55- mu m InGaAs/InGaAsP strained-quantum-well lasers are theoretically investigated. Well-approximated empirical expressions are proposed to model these effects. Using these formulas, one can easily and accurately predict the performance of a laser diode for a given structure. Therefore, these empirical formulas are useful tools for design and optimization of strained quantum well lasers. As a general design guideline revealed from the empirical formulas, the threshold current is reduced with the compressive strain, and the modulation bandwidth is most efficiently increased with the number of wells.<>
Keywords :
III-V semiconductors; gallium arsenide; gallium compounds; indium compounds; laser theory; optical design techniques; optimisation; semiconductor lasers; 1.55 micron; IR; InGaAs-InGaAsP; SQW; compressive strain; differential gain; diode laser design; laser optimization; modulation bandwidth; nonlinear gain coefficient; optical gain; quantum well number; semiconductors; strained-quantum-well lasers; threshold current; Capacitive sensors; Design optimization; Diode lasers; Indium gallium arsenide; Laser modes; Laser theory; Nonlinear optics; Optical design; Quantum mechanics; Quantum well lasers;
Journal_Title :
Photonics Technology Letters, IEEE
