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Proceedings Paper

80-nm-tunable high-index-contrast subwavelength grating long-wavelength VCSEL: proposal and numerical simulations
Author(s): Il-Sug Chung; Jesper Mørk; Alexei Sirbu; Vladmir Iakovlev; Alexandru Mereuta; Andrei Caliman; Kapon Elyahou
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Paper Abstract

A widely-tunable single-mode long wavelength vertical-cavity surface-emitting laser structure employing a MEMStunable high-index-contrast subwavelength grating (HCG) is suggested and numerically investigated. A very large 80- nm linear tuning range was obtained as the HCG was actuated by -220 to 250 nm. The large tuning range results from making the air gap part of the optical cavity, which was achieved by inserting an antireflection layer below the air gap and by the absence of partial top DBR for current spreading. The single mode operation was maintained throughout the tuning range, thanks to the selective pumping of the fundamental mode and the moderate mode selection by the HCG itself. Analytic expressions for tuning range and tuning sensitivity were derived, using the penetration depth of the HCG for the first time.

Paper Details

Date Published: 5 February 2010
PDF: 8 pages
Proc. SPIE 7615, Vertical-Cavity Surface-Emitting Lasers XIV, 76150K (5 February 2010); doi: 10.1117/12.841696
Show Author Affiliations
Il-Sug Chung, Technical Univ. of Denmark (Denmark)
Jesper Mørk, Technical Univ. of Denmark (Denmark)
Alexei Sirbu, Ecole Polytechnique Fédérale de Lausanne (Switzerland)
Vladmir Iakovlev, Beam Express S.A. (Switzerland)
Alexandru Mereuta, Ecole Polytechnique Fédérale de Lausanne (Switzerland)
Andrei Caliman, Ecole Polytechnique Fédérale de Lausanne (Switzerland)
Kapon Elyahou, Ecole Polytechnique Fédérale de Lausanne (Switzerland)

Published in SPIE Proceedings Vol. 7615:
Vertical-Cavity Surface-Emitting Lasers XIV
James K. Guenter; Kent D. Choquette, Editor(s)

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