Abstract
By injecting only 2 mW from a spectrally narrowed diode laser into a 100-mW free-running diode laser array (FRA), we have dramatically narrowed both its spectrum and beam divergence.1 We have modeled this process and found that its dominant feature is phase matching of the injected wave with the free-running wave in a single stripe of the array. This model provides an accurate description of both the main output beam features as well as certain secondary behavior.
© 1989 Optical Society of America
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