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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Xi-Cheng Zhang
  • Vol. 39, Iss. 8 — Apr. 15, 2014
  • pp: 2391–2394

Angled cavity photonic crystal laser diodes with tilted sidewalls for improving far-field patterns

L. Liu, Y. Liu, H. W. Qu, Y. F. Wang, H. L. Wang, Z. G. Feng, Y. J. Zhang, and W. H. Zheng  »View Author Affiliations


Optics Letters, Vol. 39, Issue 8, pp. 2391-2394 (2014)
http://dx.doi.org/10.1364/OL.39.002391


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Abstract

Angled laser diodes based on the longitudinal photonic band crystal (PBC) waveguide are first proposed and fabricated at a wavelength of 905 nm. Tilted sidewalls are utilized to reflect the light downward, thus enlarging the transverse mode size. In the experiment, continuous wave (CW) output power of 630mW/facet is achieved, and stable and narrow divergence angles are obtained in the fast and slow axes, simultaneously. The transverse angle is reduced by 44% compared with that of the conventional broad area (BA) laser based on the same wafer, and the lateral angle is only 1.65° with on-axis main-lobe emission. This device shows a promising future for laser emission with ultra-narrow divergence and easy fabrication.

© 2014 Optical Society of America

OCIS Codes
(140.2020) Lasers and laser optics : Diode lasers
(140.3295) Lasers and laser optics : Laser beam characterization

ToC Category:
Lasers and Laser Optics

History
Original Manuscript: January 17, 2014
Revised Manuscript: March 18, 2014
Manuscript Accepted: March 19, 2014
Published: April 9, 2014

Citation
L. Liu, Y. Liu, H. W. Qu, Y. F. Wang, H. L. Wang, Z. G. Feng, Y. J. Zhang, and W. H. Zheng, "Angled cavity photonic crystal laser diodes with tilted sidewalls for improving far-field patterns," Opt. Lett. 39, 2391-2394 (2014)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-39-8-2391

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