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Optics Express

Optics Express

  • Editor: Michael Duncan
  • Vol. 13, Iss. 10 — May. 16, 2005
  • pp: 3787–3794

High contrast switching of distributed-feedback lasing in dye-doped H-PDLC transmission grating structures

Vincent K.S. Hsiao, Changgui Lu, Guang S. He, Michael Pan, Alexander N. Cartwright, Paras N. Prasad, Rachel Jakubiak, Richard A. Vaia, and Timothy J. Bunning  »View Author Affiliations


Optics Express, Vol. 13, Issue 10, pp. 3787-3794 (2005)
http://dx.doi.org/10.1364/OPEX.13.003787


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Abstract

Electrically switched distributed-feedback (DFB) lasing action is presented in a Pyrromethene 580 lasing dye-doped holographic polymer dispersed liquid crystal (H-PDLC) transmission grating structure. This design, when compared with the previously utilized H-PDLC reflection grating structure, has the advantage of a greatly enlarged gain length (10 mm) and a low concentration of liquid crystal (20%) while maintaining sufficient refractive index modulation. The experimental results demonstrate that the emitted laser bandwidth (~5 nm) can be obtained with a pump energy threshold of ~0.3 mJ at three different wavelengths, 561 nm, 569 nm and 592 nm, corresponding to three different grating spacings. The near- and far-field measurements have shown a high directionality of the lasing output. The lasing can be electrically switched off by an applied field of 30V/µm. The temporal, spectral, and output/input properties of the laser output are also presented.

© 2005 Optical Society of America

OCIS Codes
(090.2890) Holography : Holographic optical elements
(140.2050) Lasers and laser optics : Dye lasers

ToC Category:
Research Papers

History
Original Manuscript: April 14, 2005
Revised Manuscript: May 4, 2005
Published: May 16, 2005

Citation
Vincent Hsiao, Changgui Lu, Guang He, Michael Pan, Alexander Cartwright, Paras Prasad, Rachel Jakubiak, Richard Vaia, and Timothy Bunning, "High contrast switching of distributed-feedback lasing in dye-doped H-PDLC transmission grating structures," Opt. Express 13, 3787-3794 (2005)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-13-10-3787


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