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