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Circular, narrow beam emission of a lens-integrated surface-emitting laser operated at 1.3-mum wavelength was demonstrated. The laser consists of a distributed feedback laser cavity monolithically integrated with an etched 45deg total reflection mirror and an etched InP lens. The profile of the etched InP lens was estimated to be a highly symmetrical parabolic shape that is ideal for the collimation...
A novel 1.3-mum surface-emitting laser integrated with a monolithic InP bulk lens was demonstrated. The laser achieved very narrow far-field angles of around 2deg leading to a -2.7 dB direct coupling to a single-mode fiber.
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