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Mechanically tunable optofluidic distributed feedback dye laser

Li, Zhenyu and Zhang, Zhaoyu and Scherer, Axel and Psaltis, Demetri (2006) Mechanically tunable optofluidic distributed feedback dye laser. Optics Express, 14 (22). pp. 10494-10499. ISSN 1094-4087.

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A continuously tunable optofluidic distributed feedback (DFB) dye laser was demonstrated on a monolithic replica molded poly(dimethylsiloxane) (PDMS) chip. The optical feedback was provided by a phase-shifted higher order Bragg grating embedded in the liquid core of a single mode buried channel waveguide. Due to the soft elastomeric nature of PDMS, the laser frequency could be tuned by mechanically stretching the grating period. In principle, the mechanical tuning range is only limited by the gain bandwidth. A tuning range of nearly 60nm was demonstrated from a single dye laser chip by combining two common dye molecules Rhodamine 6G and Rhodamine 101. Single-mode operation was maintained with less than 0.1nm linewidth. Because of the higher order grating, a single laser, when operated with different dye solutions, can provide tunable light output covering the entire spectrum from near UV to near IR in which efficient laser dyes are available. An array of five DFB dye lasers with different grating periods was also demonstrated on a chip. Such tunable integrated laser arrays are expected to become key components in inexpensive advanced spectroscopy chips.

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Additional Information:© 2006 Optical Society of America Original Manuscript: July 28, 2006. Manuscript Accepted: October 13, 2006. Published: October 30, 2006 This research was supported by the DARPA center for optofluidic integration and the Boeing Company under the SRDMA program.
Funding AgencyGrant Number
Defense Advanced Research Projects Agency (DARPA)UNSPECIFIED
Subject Keywords:Integrated optics devices; Dye lasers; Distributed-feedback lasers; Single-mode lasers; Tunable lasers; Optical waveguides
Issue or Number:22
Record Number:CaltechAUTHORS:LIZoe06b
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:6071
Deposited By: Archive Administrator
Deposited On:16 Nov 2006
Last Modified:02 Oct 2019 23:29

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