We experimentally demonstrate the simultaneous injection locking of pairs of high-power broad-area laser diodes in a 19-laser array driven by a common current source. Each pair is injection locked by use of a single-mode low-power semiconductor laser. The frequency and phase locking are verified by the optical spectrum and the interference pattern between the injection-locked lasers. The influence of frequency detuning on the (simultaneous) injection behavior has been experimentally clarified. We validate a necessary condition for the injection locking of a broad-area laser array.
© 2002 Optical Society of America
Yun Liu, Hua-Kuang Liu, and Yehuda Braiman, "Simultaneous injection locking of couples of high-power broad-area lasers driven by a common current source," Appl. Opt. 41, 5036-5039 (2002)