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A real-index guided InGaAlP visible laser diode with a small beam astigmatism

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6 Author(s)

A real-index guided InGaAlP visible laser diode with a small beam astigmatism has been developed. The structure, fabrication process, and optical properties of the laser are described. The laser is characterized by a slab-coupled waveguide structure with self-aligned current confinement. The laser was fabricated with a two-step metalorganic chemical vapor deposition (MOCVD) process. The laser exhibited stable fundamental transverse mode oscillation with a threshold current as low as 40 mA and a lasing wavelength of 670 nm. As a result of real-index guiding, a small beam astigmatism less than 2 μm has been achieved. The laser exhibited a stable operation for 2000 h under 3 mW at 30°C

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Quantum Electronics, IEEE Journal of  (Volume:27 ,  Issue: 6 )