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Multicolor Fluorescence Detection for Droplet Microfluidics Using Optical Fibers
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Published on: May 5, 2016

Optofluidic dye laser in a foil.

Christoph Vannahme1, Mads Brøkner Christiansen, Timo Mappes

  • 1Institute for Microstructure Technology, Karlsruhe Institute of Technology, 76128 Karlsruhe, Germany. christoph.vannahme@kit.edu

Optics Express
|July 1, 2010
PubMed
Summary
This summary is machine-generated.

Researchers developed novel optofluidic dye lasers using distributed feedback in TOPAS foil. These lasers achieve high pulse energies and stable operation, advancing micro-laser technology.

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Area of Science:

  • Optofluidics
  • Laser Physics
  • Materials Science

Background:

  • Optofluidic dye lasers offer tunable wavelength and high output.
  • Miniaturization and integration are key challenges in laser technology.

Purpose of the Study:

  • To demonstrate first-order distributed feedback optofluidic dye lasers.
  • To achieve high output pulse energies and stable operation in a micro-format.

Main Methods:

  • Fabrication of microfluidic channels and gratings via thermal nanoimprint in TOPAS foil.
  • Integration of a liquid core waveguide with nanostructured gratings.
  • Utilizing Pyrromethene 597 dye in benzyl alcohol as the gain medium.

Main Results:

  • Demonstrated single-mode laser emission at 566 nm and 581 nm using grating periods of 185 nm and 190 nm.
  • Achieved high emitted pulse energies exceeding 1 microJoule.
  • Obtained stable laser operation for over 25 minutes at a 10 Hz repetition rate.

Conclusions:

  • First-order distributed feedback optofluidic dye lasers in TOPAS foil are feasible.
  • The design enables large gain volumes and high pulse energies.
  • The developed lasers show promising stability for practical applications.