Ultraviolet single-frequency coupled optofluidic ring resonator dye laser

Xin Tu; Xiang Wu; Ming Li; Liying Liu; Lei Xu

doi:10.1364/OE.20.019996

Ultraviolet single-frequency coupled optofluidic ring resonator dye laser

Opt Express. 2012 Aug 27;20(18):19996-20001. doi: 10.1364/OE.20.019996.

Authors

Xin Tu¹, Xiang Wu, Ming Li, Liying Liu, Lei Xu

Affiliation

¹ Key Lab for Micro and Nanophotonic Structures (Ministry of Education), Department of Optical Science and Engineering, School of Information Science and Engineering, Fudan University, Shanghai 200433, China.

PMID: 23037052
DOI: 10.1364/OE.20.019996

Abstract

Ultraviolet single-frequency lasing is realized in a coupled optofluidic ring resonator (COFRR) dye laser that consists of a thin-walled capillary microfluidic ring resonator and a cylindrical resonator. The whispering gallery modes (WGMs) in each resonator couple to each other and generate single-frequency laser emission. Single-frequency lasing occurs at 386.75 nm with a pump threshold of 5.9 μJ/mm. The side-mode-suppression ratio (SMSR) is about 20 dB. Moreover, the laser emits mainly in two directions, and each of them has a divergence of only 10.5°.

Publication types

Research Support, Non-U.S. Gov't

MeSH terms

Coloring Agents / chemistry*
Equipment Design
Equipment Failure Analysis
Lasers*
Microfluidics / instrumentation*
Refractometry / instrumentation*
Transducers*
Ultraviolet Rays

Substances

Coloring Agents