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Optics Letters

Optics Letters


  • Editor: Anthony J. Campillo
  • Vol. 32, Iss. 4 — Feb. 15, 2007
  • pp: 373–375

Liquid-crystal-based tunable high-Q directional random laser from a planar random microcavity

Qinghai Song, Shumin Xiao, Xinchuan Zhou, Liying Liu, Lei Xu, Yonggang Wu, and Zhanshan Wang  »View Author Affiliations

Optics Letters, Vol. 32, Issue 4, pp. 373-375 (2007)

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Temperature-tunable directional laser emission from a dye-doped liquid-crystal-based planar random cavity laser is presented. The optically pumped nematic liquid crystal infiltrated planar random microcavity produces an ultranarrow linewidth ( 0.03 nm , corresponding to Q > 20,000 ), highly directional ( 1.4 ° divergence angle) laser emission. By increasing the temperature from 27 ° C to 34 ° C , the wavelength of an emitted polarized laser can be tuned between 605.8 and 608.5 (ordinary light) and 631.3 and 624.9 nm (extraordinary light). A simulation result from the transfer matrix method that matches the experimental results well is also presented.

© 2007 Optical Society of America

OCIS Codes
(140.3600) Lasers and laser optics : Lasers, tunable
(140.4780) Lasers and laser optics : Optical resonators
(160.3710) Materials : Liquid crystals
(290.4210) Scattering : Multiple scattering

ToC Category:
Lasers and Laser Optics

Original Manuscript: October 6, 2006
Manuscript Accepted: October 27, 2006
Published: January 26, 2007

Qinghai Song, Shumin Xiao, Xinchuan Zhou, Liying Liu, Lei Xu, Yonggang Wu, and Zhanshan Wang, "Liquid-crystal-based tunable high-Q directional random laser from a planar random microcavity," Opt. Lett. 32, 373-375 (2007)

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