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Proceedings Paper

Proton-implanted red photonic crystal VCSELs with high quality output beam
Author(s): Ansas M. Kasten; Hyungrae Cha; Levi Naden; Mary K. Hibbs-Brenner; Klein Johnson; Kent D. Choquette
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Paper Abstract

We have fabricated proton-implanted photonic crystal (PhC) vertical-cavity surface-emitting lasers (VCSELs) emitting in the visible spectrum. The active region of the VCSELs is composed of multiple InGaAlP quantum wells resulting in an emission wavelength of 674 nm. A threshold current of 1.3 mA and single mode output power higher than 1 mW at room temperature have been achieved. The maximum continuous wave (CW) lasing temperature was found to be 55° C. The PhC VCSELs operate in a single fundamental mode with a side-mode suppression ratio (SMSR) larger than 30 dB and show a constant beam divergence of 8 degree (full angle) for all levels of injection current and various ambient temperatures. We compare ion-implanted and photonic crystal VCSELs and demonstrate that the controllable refractive index guidance effect of the PhC results in a stable beam output which makes these red VCSELs interesting for imaging applications.

Paper Details

Date Published: 5 February 2010
PDF: 8 pages
Proc. SPIE 7615, Vertical-Cavity Surface-Emitting Lasers XIV, 76150M (5 February 2010); doi: 10.1117/12.847340
Show Author Affiliations
Ansas M. Kasten, Univ. of Illinois at Urbana-Champaign (United States)
Hyungrae Cha, Univ. of Illinois at Urbana-Champaign (United States)
Levi Naden, Univ. of Illinois at Urbana-Champaign (United States)
Mary K. Hibbs-Brenner, Vixar Inc. (United States)
Klein Johnson, Vixar Inc. (United States)
Kent D. Choquette, Univ. of Illinois at Urbana-Champaign (United States)

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

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