The stimulated emission profiles of oxide-isolated double-heterostructure diode lasers with 8-μm stripes are predicted using a dielectric profile completely determined by measurement. The profiles inferred from the spontaneous emission vary as 1 − (‖x‖/w)α with α≅4. The current-induced changes in gain and index are determined from the Fabry-Perot mode spectrum. A simple model with no adjustable parameters is used to predict near- and far-field widths to within 6%.
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Manning et al. (1982) studied this question.
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