A low-threshold, high-efficiency microfluidic waveguide laser

Dmitri V Vezenov; Brian T Mayers; Richard S Conroy; George M Whitesides; Preston T Snee; Yinthai Chan; Daniel G Nocera; Moungi G Bawendi

doi:10.1021/ja0517421

A low-threshold, high-efficiency microfluidic waveguide laser

J Am Chem Soc. 2005 Jun 29;127(25):8952-3. doi: 10.1021/ja0517421.

Authors

Dmitri V Vezenov¹, Brian T Mayers, Richard S Conroy, George M Whitesides, Preston T Snee, Yinthai Chan, Daniel G Nocera, Moungi G Bawendi

Affiliation

¹ Department of Chemistry and Chemical Biology, Harvard University, 12 Oxford Street, Cambridge, Massachusetts 02138, USA.

PMID: 15969563
DOI: 10.1021/ja0517421

Abstract

This communication describes a long (1 cm), laser-pumped, liquid core-liquid cladding (L2) waveguide laser. This device provides a simple, high intensity, tunable light source for microfludic applications. Using a core solution of 2 mM rhodamine 640 perchlorate, optically pumped by a frequency-doubled Nd:YAG laser, we found that the threshold for lasing was as low as 22 muJ (16-ns pulse length) and had a slope efficiency up to 20%. The output wavelength was tunable over a 20-nm range by changing the ratio of solvent components (dimethyl sulfoxide and methanol) in the liquid core.

Publication types

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

MeSH terms

Equipment Design
Lasers*
Microfluidic Analytical Techniques / instrumentation*
Microfluidic Analytical Techniques / methods*