Document Type
Article
Publication Date
2015
Abstract
We designed, fabricated, and characterized a monolithically integrated optofluidic ring resonator laser that is mechanically, thermally, and chemically robust. The entire device, including the ring resonator channel and sample delivery microfluidics, was created in a block of fused-silica glass using a 3-dimensional femtosecond laser writing process. The gain medium, composed of Rhodamine 6G (R6G) dissolved in quinoline, was flowed through the ring resonator. Lasing was achieved at a pump threshold of approximately 15 μJ/mm2. Detailed analysis shows that the Q-factor of the optofluidic ring resonator is 3.3 × 104, which is limited by both solvent absorption and scattering loss. In particular, a Q-factor resulting from the scattering loss can be as high as 4.2 × 104, suggesting the feasibility of using a femtosecond laser to create high quality optical cavities.
DOI
10.1039/c5lc00254k
Source Publication
Lab on a Chip
Recommended Citation
Hengky Chandrahalim, Qiushu Chen, Ali A. Said, Mark Dugan, and Xudong Fan, "Monolithic optofluidic ring resonator lasers created by femtosecond laser nanofabrication," Lab Chip, 15, 2015, pp. 2335-2340. https://doi.org/10.1039/c5lc00254k
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Comments
This is the pre-print (pre-refereed) version of the article, in compliance with posting policies by the publisher, Royal Society of Chemistry.
The version of record is cited below, as hosted at the publisher website. The final article is subscription-access only.