Continuously tunable microdroplet-laser in a microfluidic channel

被引：105

作者：

Tang, Sindy K. Y. ^{[1
]}

Derda, Ratmir ^{[1
]}

Quan, Qimin ^{[2
]}

Loncar, Marko ^{[2
]}

Whitesides, George M. ^{[1
]}

机构：

[1] Harvard Univ, Dept Chem & Chem Biol, Wyss Inst Biol Inspired Engn, Cambridge, MA 02138 USA

[2] Harvard Univ, Sch Engn & Appl Sci, Cambridge, MA 02138 USA

来源：

OPTICS EXPRESS | 2011年 / 19卷 / 03期

基金：

美国国家科学基金会;

关键词：

MORPHOLOGY-DEPENDENT RESONANCES; FLOW-FOCUSING DEVICE; FLUORESCENCE-SPECTRA; STIMULATED-EMISSION; WAVELENGTH SHIFTS; DROPLETS; BUBBLES;

D O I：

10.1364/OE.19.002204

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

This paper describes the generation and optical characterization of a series of dye-doped droplet-based optical microcavities with continuously decreasing radius in a microfluidic channel. A flow-focusing nozzle generated the droplets (similar to 21 mu m in radius) using benzyl alcohol as the disperse phase and water as the continuous phase. As these drops moved down the channel, they dissolved, and their size decreased. The emission characteristics from the drops could be matched to the whispering gallery modes from spherical micro-cavities. The wavelength of emission from the drops changed from 700 to 620 nm as the radius of the drops decreased from 21 mu m to 7 mu m. This range of tunability in wavelengths was larger than that reported in previous work on droplet-based cavities. (C)2011 Optical Society of America

引用

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页码：2204 / 2215

页数：12

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