Li Zhenyu, Zhang Zhaoyu, Emery Teresa, Scherer Axel, Psaltis Demetri
Opt Express. 2006 Jan 23;14(2):696-701. doi: 10.1364/opex.14.000696.
Single frequency lasing from organic dye solutions on a monolithic poly(dimethylsiloxane) (PDMS) elastomer chip is demonstrated. The laser cavity consists of a single mode liquid core/PDMS cladding channel waveguide and a phase shifted 15th order distributed feedback (DFB) structure. A 1mM solution of Rhodamine 6G in a methanol and ethylene glycol mixture was used as the gain medium. Using 6 nanosecond 532nm Nd:YAG laser pulses as the pump light, we achieved threshold pump fluence of ~0.8mJ/cm(2) and single-mode operation at pump levels up to ten times the threshold. This microfabricated dye laser provides a compact and inexpensive coherent light source for microfluidics and integrated optics covering from near UV to near IR spectral region.
展示了在单片聚二甲基硅氧烷（PDMS）弹性体芯片上从有机染料溶液产生单频激光。激光腔由单模液芯/PDMS包层通道波导和相移15阶分布反馈（DFB）结构组成。在甲醇和乙二醇混合物中的1mM罗丹明6G溶液用作增益介质。使用6纳秒532nm Nd:YAG激光脉冲作为泵浦光，我们实现了约0.8mJ/cm²的阈值泵浦通量，并在泵浦水平高达阈值十倍时实现单模运行。这种微制造的染料激光器为微流体和集成光学提供了一种紧凑且廉价的相干光源，覆盖从近紫外到近红外光谱区域。
