a Semiconductor Research Laboratory, Mitsubishi Electric Corporation, 8-1-1, Tsukaguchi-Honmachi, Amagasaki, Hyogo 661, Japan
b Optoelectronics Technology Research Corporation, 8-1-1, Tsukaguchi-Honmachi, Amagasaki, Hyogo 661, Japan
Abstract:
In order to fabricate InGaAs/InP double-heterostructure (DH) lasers, a novel selectively embedded one-step growth by chemical beam epitaxy (CBE) was adopted. Before the selective CBE growth, 6–8 μm wide channels on an n-InP substrate were undercut by wet chemical etching through a 170 nm thick SiO2 film mask. A 6 μm wide stripe-geometry DH laser structure with an active layer of 0.14 μm thickness was grown selectively with good planarity into the channels and operated by a pulse.