Title :
Quantum well semiconductor lasers are taking over
Abstract :
The author describes the principles and performance of semiconductor quantum-well lasers, which are characterized by confinement of the electrons and holes to extremely thin ( approximately 70 AA) regions. This leads to major improvement in all the operating characteristics of these lasers compared to conventional semiconductor lasers, specifically, to a reduction of more than an order of magnitude in threshold current and a much narrower spectral width.<>
Keywords :
semiconductor junction lasers; spectral line breadth; operating characteristics; quantum-well lasers; semiconductor lasers; spectral width; threshold current; Application software; Biomedical optical imaging; Carrier confinement; Charge carrier processes; Electron optics; Fiber lasers; Laser theory; Quantum mechanics; Quantum well lasers; Semiconductor lasers;
Journal_Title :
Circuits and Devices Magazine, IEEE
