ISSN:
1077-3118
Source:
AIP Digital Archive
Topics:
Physics
Notes:
A monolithically integrated array of InGaAs/AlGaAs flared amplifiers driven by a single DBR laser through a power splitter network and individually addressed phase modulators is described. Phase adjustment of (approximately-greater-than)2π per element by free-carrier effects is verified by monitoring the interference pattern of all four emitters, and typically requires 〈15 mA of current to obtain a 2π phase shift. Phase matching is achieved among all four diffraction-limited emitters at a pulsed output power of (approximately-greater-than)5 W, and, combined with the proper external lensing, could therefore result in an ultranarrow, single-lobed far-field pattern whose width is determined by the extended aperture of the array. © 1995 American Institute of Physics.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1063/1.114011
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