Abstract

Quantum-dot lasers are expected to attain remarkable reduction in threshold current and temperature-insensitive operation, however, high characteristic temperature of threshold current (T₀) has not yet been achieved except lasers which required huge current injection. For example, the dot lasers with low threshold current density or currents close to 10 mA have The ground- level lasing occurred up to 100°C. We compared the optical properties of the lasers with those of other dot lasers to indicate what were the key points for the achievements.

© 2000 Optical Society of America