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Related Experiment Video

Updated: May 10, 2026

Fabrication of Polymer Microspheres for Optical Resonator and Laser Applications
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Fabrication of Polymer Microspheres for Optical Resonator and Laser Applications

Published on: June 2, 2017

Nanoimprinted polymer lasers with threshold below 100 W/cm2 using mixed-order distributed feedback resonators.

Yue Wang1, Georgios Tsiminis, Alexander L Kanibolotsky

  • 1Organic Semiconductor Centre, SUPA, School of Physics and Astronomy, University of St Andrews, North Haugh, St Andrews, KY16 9SS, UK.

Optics Express
|June 22, 2013
PubMed
Summary

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Researchers developed organic semiconductor lasers using UV-nanoimprint lithography. This technique achieved low lasing thresholds, creating a compact, cost-effective coherent light source compatible with LEDs.

Area of Science:

  • Optoelectronics
  • Materials Science
  • Nanotechnology

Background:

  • Organic semiconductor lasers offer potential for low-cost, flexible light sources.
  • Integrating organic materials with inorganic light-emitting diodes (LEDs) presents fabrication challenges.

Purpose of the Study:

  • To demonstrate a scalable fabrication method for organic semiconductor lasers.
  • To achieve low lasing thresholds in hybrid organic-semiconductor laser devices.
  • To create a compact, cost-effective coherent light source.

Main Methods:

  • Fabrication of organic semiconductor lasers using ultraviolet (UV) nanoimprint lithography.
  • Integration of mixed-order distributed feedback resonators (second-order gratings with first-order gratings).
  • Use of a light-emitting conjugated polymer and pumping with Indium Gallium Nitride (InGaN) LEDs.

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Last Updated: May 10, 2026

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Low-cost Custom Fabrication and Mode-locked Operation of an All-normal-dispersion Femtosecond Fiber Laser for Multiphoton Microscopy
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Main Results:

  • Achieved low lasing thresholds as low as 57 W/cm² under 4 ns pulsed operation.
  • Demonstrated green-emitting hybrid lasers with thresholds of 208 W/cm² (102 nJ/pulse).
  • Validated the compatibility of UV-nanoimprint lithography with high-performance LEDs.

Conclusions:

  • UV-nanoimprint lithography is a scalable process for fabricating high-performance organic semiconductor lasers.
  • Hybrid lasers combining organic materials and InGaN LEDs offer a promising route to coherent, compact, and low-cost light sources.
  • The demonstrated technology enables the development of advanced optoelectronic devices.