Angular scanning of the far-field intensity peak of a GaAs/GaAlAs DH injection laser is demonstrated. This scan is accomplished by adjusting the current levels between two closely space stripe contacts, thereby creating an asymmetric gain/refractive index profile through which the laser beam propagates. Thus, this effect is somewhat analogous to passing the laser beam through a wedge. A deflection of the peak laser beam intensity of ±14° along the p-n junction plane is observed.
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Scifres et al. (1978) studied this question.
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