Skip to Main Content
Your organization might have access to this article on the publisher's site. To check, click on this link:http://dx.doi.org/+10.1063/1.96291
We report injection‐locking studies on a gain‐guided diode‐laser array using a single‐frequency cw tunable dye laser master oscillator. By injecting a single end element, both the spatial and spectral emission characteristics of the entire ten‐element array could be controlled. The injection‐locked array produced over 100 mW output in a single‐lobed far‐field beam (≪0.5° angular width) with a bandwidth of less than 2 MHz. With 3 mW injection, locking occurred over a number of discrete frequency intervals (∼6 GHz wide). At higher power levels (12 mW), these intervals merged to form one continuous locking range ≫60 GHz wide. Furthermore, by varying the injection frequency, the far‐field emission angle of the array could be continuously scanned over several degrees at a rate of 2.3×10-2 deg/GHz.