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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 17, Iss. 21 — Oct. 12, 2009
  • pp: 18900–18905

Holographic fabricated photonic-crystal distributed-feedback quantum cascade laser with near-diffraction-limited beam quality

Quan-Yong Lu, Wei Zhang, Li-Jun Wang, Jun-Qi Liu, Lu Li, Feng-Qi Liu, and Zhan-Guo Wang  »View Author Affiliations


Optics Express, Vol. 17, Issue 21, pp. 18900-18905 (2009)
http://dx.doi.org/10.1364/OE.17.018900


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Abstract

We demonstrate the fabrication and characterization of photonic-crystal distributed-feedback quantum cascade laser emitting at 4.7 μm. The tilted rectangular-lattice PCDFB structure was defined using a multi-exposure of two-beam holographic lithography. The devices exhibit the near-diffraction-limited beam emission with the full width at half maximum of the far-field divergence angles about 4.5° and 2.5° for stripe widths of 55 μm and 95 μm, respectively. Single-mode emission with a side mode suppression ratio of ≈20 dB is achieved in the temperature range (80-210 K). The single-facet output power is above 1 W for a 95 μm × 2.5 mm laser bar at 85 K in pulsed operation.

© 2009 OSA

OCIS Codes
(090.0090) Holography : Holography
(140.3070) Lasers and laser optics : Infrared and far-infrared lasers
(140.3490) Lasers and laser optics : Lasers, distributed-feedback
(260.3160) Physical optics : Interference
(130.5296) Integrated optics : Photonic crystal waveguides

ToC Category:
Lasers and Laser Optics

History
Original Manuscript: July 31, 2009
Revised Manuscript: September 27, 2009
Manuscript Accepted: September 30, 2009
Published: September 6, 2009

Citation
Quan-Yong Lu, Wei Zhang, Li-Jun Wang, Jun-Qi Liu, Lu Li, Feng-Qi Liu, and Zhan-Guo Wang, "Holographic fabricated photonic-crystal distributed-feedback quantum cascade laser with near-diffraction-limited beam quality," Opt. Express 17, 18900-18905 (2009)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-17-21-18900


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References

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