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Photonic Crystal Microchip Laser.

Darius Gailevicius1, Volodymyr Koliadenko2, Vytautas Purlys1

  • 1Laser Research Center, Department of Quantum Electronics, Vilnius University, Sauletekio Ave. 10, LT-10222, Vilnius, Lithuania.

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Summary
This summary is machine-generated.

This study introduces the photonic crystal microchip laser, a novel compact laser source. It significantly enhances beam quality and brightness by incorporating a photonic crystal into the laser cavity.

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Area of Science:

  • Optics and Photonics
  • Laser Physics
  • Materials Science

Background:

  • Microchip lasers are compact and efficient coherent light sources.
  • A key limitation is the low spatial quality of their output beam, reducing radiation brightness.
  • Existing methods to improve beam quality often compromise power or increase laser complexity.

Purpose of the Study:

  • To investigate the use of a specially designed photonic crystal within a microchip laser cavity.
  • To significantly improve the spatial beam quality and brightness of microchip lasers.

Main Methods:

  • Integration of a photonic crystal into the cavity of a microchip laser.
  • Utilizing the spatial filtering properties of the intracavity photonic crystal.
  • Experimental validation of the proposed laser design.

Main Results:

  • The photonic crystal microchip laser demonstrated improved beam quality by reducing the M² factor by a factor of 2.
  • The brightness of the emitted radiation was increased by a factor of 3.
  • The photonic crystal acted as an effective spatial filter within the laser cavity.

Conclusions:

  • A new class of laser, the "photonic crystal microchip laser", has been developed.
  • This laser is a compact and efficient source of high spatial quality, high brightness radiation.
  • Intracavity photonic crystals offer a viable solution for enhancing microchip laser performance.