Ultralow-threshold (0.56 mA) 1.35-μm InGaAsP/InP compressive-strained-MQW lasers

Abstract
Extremely low threshold currents of 0.56 mA (pulsed) and 0.58 mA (CW) have been obtained in a 1.35-/spl mu/m InGaAsP/InP strained-MQW laser, at room temperature. These values are the lowest ever reported for long-wavelength lasers.