Portal de Periódicos da CAPES

Low-order distributed feedback optofluidic dye laser with reduced threshold

2009; American Institute of Physics; Volume: 94; Issue: 5 Linguagem: Inglês

10.1063/1.3079799

1520-8842

Wuzhou Song, Andreas E. Vasdekis, Zhenyu Li, Demetri Psaltis,

Electrowetting and Microfluidic Technologies

We report the demonstration of low order distributed feedback (DFB) optofluidic dye lasers with reduced threshold. The laser chips were realized in polydimethylsiloxane using replica molding with two masters. A comparison between first, second, and third order DFB dye lasers was performed, while the second order DFB dye laser exhibited the lowest pump threshold of 78 nJ/pulse. Compared to previous reports on higher order Bragg grating structures, the pump threshold in this work is approximately 30-fold lower than the state of the art due to the reduction in the cavity losses and the more efficient pumping configuration.