Continuous Output Beam Steering in Vertical-Cavity Surface-Emitting Lasers with Two p-Type Electrodes by Controlling Injection Current Profile

• Published in: Japanese Journal of Applied Physics Vol. 38; no. 4R; p. 1966
• Main Authors: Ide, Toshihide, Shimizu, Mitsuaki, Mukai, Seiji, Ogura, Mutsuo, Kikuchi, Takuya, Suzuki, Yoshihiro, Kaji, Ryosaku, Itoh, Hideo, Watanabe, Masanobu, Yajima, Hiroyoshi, Nemoto, Toshio
• Format: Journal Article
• Language: English
• Published: 01-04-1999
• ISSN: 0021-4922; 1347-4065
• DOI: 10.1143/JJAP.38.1966

Using vertical-cavity surface-emitting lasers with two p-type electrodes,
continuous output beam steering was achieved for the first time by
controlling the injection current profile. The far-field peak position can
be shifted linearly by varying the ratio between injection currents into the
two p-type electrodes. The deflection angle measured from the surface
normal direction ranges from -1.3° to +1.0°. Also, we investigated
operating characteristics that are important for optical processing such as
optical fuzzy inference.