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Proceedings Paper

Tunable optofluidic distributed feedback dye lasers
Author(s): Zhenyu Li; Zhaoyu Zhang; Teresa Emery; Axel Scherer; Demetri Psaltis
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Paper Abstract

We demonstrated a continuously tunable optofluidic distributed feedback (DFB) dye laser on a monolithic poly(dimethylsiloxane) (PDMS) elastomer 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. We achieved nearly 60nm continuously tunable output by mechanically varying the grating period with two dye molecules Rhodamine 6G (Rh6G) and Rhodamine 101 (Rh101). Single-mode operation was obtained with <0.1nm linewidth. Because of the higher order grating, a single laser, when operated with different dye solutions, can provide tunable output covering from near UV to near IR spectral region. The low pump threshold (< 1uJ) makes it possible to use a single high energy pulsed laser to pump hundreds of such lasers on a chip. An integrated array of five DFB dye lasers with different lasing wavelengths was also demonstrated. Such laser arrays make it possible to build highly parallel optical sensors on a chip. The laser chip is fully compatible with PDMS based soft microfluidics.

Paper Details

Date Published: 7 September 2006
PDF: 8 pages
Proc. SPIE 6329, Optofluidics, 632903 (7 September 2006); doi: 10.1117/12.683343
Show Author Affiliations
Zhenyu Li, California Institute of Technology (United States)
Zhaoyu Zhang, California Institute of Technology (United States)
Teresa Emery, California Institute of Technology (United States)
Axel Scherer, California Institute of Technology (United States)
Demetri Psaltis, California Institute of Technology (United States)


Published in SPIE Proceedings Vol. 6329:
Optofluidics
Demetri Psaltis; Yeshaiahu Fainman, Editor(s)

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