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Related Experiment Video

Updated: Jun 26, 2026

Development of Whispering Gallery Mode Polymeric Micro-optical Electric Field Sensors
08:32

Development of Whispering Gallery Mode Polymeric Micro-optical Electric Field Sensors

Published on: January 29, 2013

Flexible compact microdisk lasers on a polydimethylsiloxane (PDMS) substrate.

M H Shih1, K S Hsu, Y C Wang

  • 1Research Center for Applied Sciences (RCAS), Academia Sinica, Taiwan, ROC. mhshih@gate.sinica.edu.tw

Optics Express
|January 23, 2009
PubMed
Summary
This summary is machine-generated.

Flexible microdisk cavities fabricated on polydimethylsiloxane substrates exhibit low-threshold lasing. Bending the cavity demonstrated curvature dependence in output power and threshold, showcasing tunable optical properties.

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Last Updated: Jun 26, 2026

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Area of Science:

  • Optics and Photonics
  • Materials Science

Background:

  • Microdisk cavities are essential for photonics applications.
  • Flexible substrates offer new possibilities for tunable optical devices.

Purpose of the Study:

  • To fabricate and characterize flexible microdisk cavities.
  • To investigate the lasing properties and whispering-gallery modes of these flexible cavities.
  • To demonstrate the effect of mechanical bending on cavity performance.

Main Methods:

  • Fabrication of compact microdisk cavities on a polydimethylsiloxane (PDMS) substrate.
  • Experimental characterization of lasing performance, including threshold power.
  • Three-dimensional finite-difference time-domain (3D-FDTD) simulations for mode analysis.
  • Mechanical bending of the microdisk cavity to study curvature dependence.

Main Results:

  • Successful fabrication of flexible microdisk cavities.
  • Achieved lasing with a low threshold power.
  • Characterized whispering-gallery modes using 3D-FDTD simulations.
  • Demonstrated significant dependence of output power and threshold on cavity curvature due to bending.

Conclusions:

  • Flexible microdisk cavities can be fabricated on PDMS substrates.
  • These cavities exhibit efficient lasing with low threshold power.
  • Mechanical strain provides a method for tuning the optical properties of microdisk resonators.