Room-temperature 2.2-μM InAs-InGaAs-InP highly strained multiquantum-well lasers grown by gas-source molecular beam epitaxy
Journal
IEEE Journal of Quantum Electronics
Journal Volume
34
Journal Issue
10
Pages
1959-1962
Date Issued
1998
Author(s)
Abstract
We report the fabrication and performances of 2.2-/spl mu/m InAs-InGaAs-InP highly strained multiple-quantum-well (MQW) lasers grown by gas-source molecular beam epitaxy. The lasers operated at room temperature demonstrate a threshold current density of 900 A/cm/sup 2/ a maximum external quantum efficiency of 28%, and a maximum output power exceeding 60 mW per facet. To the best of our knowledge, this is the longest room-temperature emission wavelength reported for lasers grown on InP substrates to date. The effect of strain compensation on the quality of the InAs-In/sub x/Ga/sub 1-x/As MQW's was also studied using double crystal X-ray diffractometry and photoluminescence techniques. The experimental results reveal that there is no significant difference on the epilayer quality of the samples with strain compensation. However, the group V stable surface growth condition is indeed better than the group III stable surface growth condition on the epilayer quality.
SDGs
Type
journal article