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Tailoring Whispering Gallery Lasing and Random Lasing in A Compound Cavity | JoVE Visualize

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Tailoring Whispering Gallery Lasing and Random Lasing in A Compound Cavity

Zhiyang Xu¹, Junhua Tong¹, Xiaoyu Shi¹

¹College of Applied Sciences, Beijing University of Technology, Beijing 100124, China.

Polymers|March 19, 2020

View abstract on PubMed

Summary

Researchers developed a novel compound cavity for whispering gallery mode (WGM) and random lasing. This polymer laser device shows tunable performance, offering new possibilities for integrated light sources in sensing applications.

Area of Science:

Photonics and optical engineering
Materials science
Nanotechnology

Background:

Whispering gallery mode (WGM) lasers and random lasers offer unique optical properties.
Integrating different lasing mechanisms into a single device presents a significant challenge.
Developing tunable and efficient light sources is crucial for advanced sensing technologies.

Purpose of the Study:

To propose and fabricate a novel compound cavity capable of both WGM and random lasing.
To investigate the transformation between WGM and random lasing modes.
To demonstrate the tunability of laser performance for potential sensing applications.

Main Methods:

Fabrication of a WGM-random compound cavity using inkjet printing and metal-assisted chemical etching.
Integration of an ultrathin polymer membrane to create a polymer laser device.
Optical pumping to induce and observe lasing phenomena.

Main Results:

Successful fabrication of a WGM-random compound cavity with an annular boundary.
Observation of a clear transformation from WGM lasing to random lasing under optical pumping.
Demonstration that laser performance can be readily tuned by adjusting cavity parameters.

Conclusions:

The developed WGM-random compound cavity enables hybrid lasing functionalities.
The polymer laser device exhibits tunable characteristics, adaptable for various applications.
This work presents a promising approach for designing integrated light sources for sensing.

Keywords:

compound cavity

Materials Engineering

Compound Semiconductors

Tailoring Whispering Gallery Lasing And Random Lasing In A Compound Cavity

whispering gallery mode