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Optics Letters

Optics Letters


  • Editor: Alan E. Willner
  • Vol. 35, Iss. 9 — May. 1, 2010
  • pp: 1452–1454

High-index sensitivity of surface mode in photonic crystal hetero-slab-edge microcavity

Tsan-Wen Lu, Yi-Hua Hsiao, Wei-De Ho, and Po-Tsung Lee  »View Author Affiliations

Optics Letters, Vol. 35, Issue 9, pp. 1452-1454 (2010)

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We introduce a photonic crystal hetero-slab-edge microcavity design with surface mode, which is beneficial for optical index sensing. The simulated index sensitivity ( R n ) as high as 675 nm per refractive index unit (nm/RIU) variation is obtained with slab thickness of 180 nm . In experiments, single surface mode lasing action from a real device is observed. Based on the surface mode in this microcavity, high experimental R n value of 625 nm /RIU is achieved by detecting index variation in a C O 2 chamber with different gas pressures.

© 2010 Optical Society of America

OCIS Codes
(140.5960) Lasers and laser optics : Semiconductor lasers
(230.5750) Optical devices : Resonators
(230.5298) Optical devices : Photonic crystals

ToC Category:
Optical Devices

Original Manuscript: January 15, 2010
Revised Manuscript: March 24, 2010
Manuscript Accepted: March 25, 2010
Published: April 30, 2010

Tsan-Wen Lu, Yi-Hua Hsiao, Wei-De Ho, and Po-Tsung Lee, "High-index sensitivity of surface mode in photonic crystal hetero-slab-edge microcavity," Opt. Lett. 35, 1452-1454 (2010)

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