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Updated: Jun 17, 2026

Multicolor Fluorescence Detection for Droplet Microfluidics Using Optical Fibers

Multicolor Fluorescence Detection for Droplet Microfluidics Using Optical Fibers

Published on: May 5, 2016

Nanowires/microfiber hybrid structure multicolor laser.

Ye Ding¹, Qing Yang, Xin Guo

¹State Key Laboratory of Modern Optical Instrumentation, Department of Optical Engineering, Zhejiang University, Hangzhou, China.

|December 10, 2009

Summary

This summary is machine-generated.

Researchers created a compact three-color laser using semiconductor nanowires (CdSe, CdS, ZnO) and a silica microfiber. This hybrid laser simultaneously emits red, green, and ultraviolet light when pumped with laser pulses.

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Published on: November 22, 2019

Area of Science:

Optics and Photonics
Materials Science
Nanotechnology

Background:

Semiconductor nanowires offer unique optical properties for laser applications.
Developing compact, multi-color laser sources is crucial for various technological fields.
Hybrid structures can enhance light manipulation and collection efficiency.

Purpose of the Study:

To demonstrate a compact hybrid laser emitting three distinct colors (red, green, ultraviolet).
To utilize semiconductor nanowires (CdSe, CdS, ZnO) integrated with a silica microfiber.
To investigate evanescent coupling for excitation and photoluminescence collection.

Main Methods:

Fabrication of a hybrid structure combining CdSe, CdS, and ZnO nanowires on a silica microfiber.
Pumping the structure with 355 nm laser pulses.
Utilizing evanescent coupling via the microfiber for nanowire excitation and photoluminescence (PL) collection.

Main Results:

Simultaneous emission of three spectrally and spatially distinct lasing groups observed.
Lasing achieved at pump energies above 1.3 microJ.
Successful integration of diverse semiconductor nanowires for multi-color laser output.

Conclusions:

A compact, hybrid three-color laser system has been successfully demonstrated.
The evanescent coupling method through a silica microfiber is effective for excitation and collection.
The demonstrated approach is versatile and can be extended to other materials for broader spectral coverage (UV to near-infrared).