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Proceedings Paper

Liquid crystal electric tuning of a photonic crystal laser
Author(s): Brett Maune; Marko Loncar; Jeremy Witzens; Michael Hochberg; Tom Baehr-Jones; Yueming Qiu; Demetri Psaltis; Axel Scherer
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Paper Abstract

We demonstrate an electrically-tuned nematic liquid crystal (LC) infiltrated photonic crystal (PC) laser. The PC laser is encased between two transparent indium tin oxide (ITO) glass plates which serve as the modulating electrodes and also define the LC cell. Applying a voltage across the cell realigns the LC, modifies the laser cavity's optical path length, and blue-shifts the lasing wavelength. The measured tuning threshold voltage agrees well with the experimentally determined LC threshold voltage which confirms the tuning is due to the LC realignment at the onset of the LC's Freedericksz transition. Furthermore, the electrically-tuned PC laser also demonstrates the successful integration of nonlinear optical materials, electronics, and fluidics with PCs and suggests further integration with other materials will lead to photonic devices with increased functionality and utility.

Paper Details

Date Published: 14 October 2004
PDF: 12 pages
Proc. SPIE 5511, Tuning the Optical Response of Photonic Bandgap Structures, (14 October 2004); doi: 10.1117/12.564556
Show Author Affiliations
Brett Maune, California Institute of Technology (United States)
Marko Loncar, Harvard Univ. (United States)
Jeremy Witzens, California Institute of Technology (United States)
Michael Hochberg, California Institute of Technology (United States)
Tom Baehr-Jones, California Institute of Technology (United States)
Yueming Qiu, Jet Propulsion Lab. (United States)
Demetri Psaltis, California Institute of Technology (United States)
Axel Scherer, California Institute of Technology (United States)


Published in SPIE Proceedings Vol. 5511:
Tuning the Optical Response of Photonic Bandgap Structures
Philippe M. Fauchet; Paul V. Braun, Editor(s)

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