Tunable optofluidic distributed feedback dye lasers

Zhenyu Li; Zhaoyu Zhang; Teresa Emery D.D.S.; Axel Scherer; Demetri Psaltis

doi:10.1117/12.683343

7 September 2006 Tunable optofluidic distributed feedback dye lasers

Zhenyu Li, Zhaoyu Zhang, Teresa Emery D.D.S., Axel Scherer, Demetri Psaltis

Proceedings Volume 6329, Optofluidics; 632903 (2006) https://doi.org/10.1117/12.683343
Event: SPIE Optics + Photonics, 2006, San Diego, California, United States

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.

Citation Download Citation

Zhenyu Li, Zhaoyu Zhang, Teresa Emery D.D.S., Axel Scherer, and Demetri Psaltis "Tunable optofluidic distributed feedback dye lasers", Proc. SPIE 6329, Optofluidics, 632903 (7 September 2006); https://doi.org/10.1117/12.683343

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