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Array-mode far-field patterns for phase-locked diode-laser array: Coupled-mode theory versus simple diffraction theory

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1 Author(s)
Botez, D. ; Lytel Incorporated, Somerville, NJ, USA

A simple, closed-form expression is derived for the far-field patterns corresponding to the modes of a phase-locked array ofNidentical elements. That allows a comparison between the correct array-mode far-field patterns (i.e., coupled-mode theory) and the heuristic, diffraction-grating-like far-field patterns generated by using simple diffraction theory. The correct diffraction-limited lobewidth is determined as a function of array-element number.

Published in:

Quantum Electronics, IEEE Journal of  (Volume:21 ,  Issue: 11 )

Date of Publication:

November 1985

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