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Photo-Assisted Wet-Etched III–V Heterostructure Laser Mirrors

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2 Author(s)
Yi, E.-H. ; Dept. of Electr. & Comput. Eng., Rutgers Univ., Piscataway, NJ ; Parker, M.A.

We demonstrate the first photo-assisted wet-etched flat-surface mirrors in III-V laser heterostructure having an average reflectance of 0.87 of the ideal cleaved facet reflectance R c independent of crystal orientation. The largest observed reflectance was 0.93R c. These lasers were fabricated using a 532-nm laser source, sulfuric acid, and exposed-metal mask. The lateral waveguiding formed from air-semiconductor interfaces produced an average internal loss of 28/cm (smallest of 14/cm) compared with similar cleaved-mirror dark-etched lasers having 46/cm.

Published in:

Photonics Technology Letters, IEEE  (Volume:21 ,  Issue: 10 )

Date of Publication:

May15, 2009

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