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18 April 2000 Single-mode single-lobe operation of surface-emitting second-order distributed feedback lasers
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Proceedings Volume 3947, In-Plane Semiconductor Lasers IV; (2000) https://doi.org/10.1117/12.382099
Event: Symposium on Integrated Optoelectronics, 2000, San Jose, CA, United States
Abstract
Thin-p-clad, 0.97 micrometers -emitting lasers with 2nd-order Au/air gratings and asymmetrically facet-coated, surface emit in a diffraction-limited (0.11 degree(s)) lobe, in agreement with theory. Then, symmetrically AR-coated surface-emitting devices with central phase shifts >= (lambda) /4 are found to lase in an orthonormal single lobe with good efficiency and near-field uniformity. The best solution is to use surface emitters with central phase shift and DBR end mirrors: external differential quantum efficiencies of 60 - 70% are obtained over wide ranges (120 - 160 degree(s)C) in central-phaseshift value.
© (2000) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Jerry Lopez, Gunawan Witjaksono, and Dan Botez "Single-mode single-lobe operation of surface-emitting second-order distributed feedback lasers", Proc. SPIE 3947, In-Plane Semiconductor Lasers IV, (18 April 2000); https://doi.org/10.1117/12.382099
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