Experimental study demonstrates Hermite-Gaussian radiation patterns in stripe-geometry GaAs junction lasers, indicating lens-like optical guiding and enhanced mode control.
Far-field radiation patterns with Hermite-Gaussian symmetry in the junction plane have been observed in both p+nn+ and p+n+ GaAs lasers specially constructed with a stripe geometry contact. The Hermite-Gaussian symmetry implies the presence of a lens-like medium between the cleavage plane mirrors. Compared with conventional junction lasers, improved mode control is obtained.
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J. C. Dyment (1967) studied this question.
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