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Related Experiment Video

Updated: Jul 7, 2026

The Generation of Higher-order Laguerre-Gauss Optical Beams for High-precision Interferometry
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The Generation of Higher-order Laguerre-Gauss Optical Beams for High-precision Interferometry

Published on: August 12, 2013

Multipass grating interferometer applied to line narrowing in excimer lasers.

J P Partanen1

  • 1Rutherford Appleton Laboratory, Laser Division, Chilton, Didcot, Oxfordshire, OX11 OQX, UK.

Applied Optics
|November 1, 1986
PubMed
Summary
This summary is machine-generated.

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A novel multipass grating interferometer (MGI) significantly narrows excimer laser linewidths. This device achieves a linewidth of 0.03 cm(-1) in a KrF laser cavity.

Area of Science:

  • Optics and Photonics
  • Laser Physics
  • Spectroscopy

Background:

  • Excimer lasers are crucial for various applications but often require precise wavelength control.
  • Intracavity line narrowing techniques are essential for improving the spectral purity of laser output.

Purpose of the Study:

  • To present the theory and application of a novel optical two-effect intracavity line narrowing device.
  • To demonstrate the effectiveness of the multipass grating interferometer (MGI) for excimer laser linewidth reduction.

Main Methods:

  • The study details the theoretical framework of the MGI, which utilizes a grating in a second-order Littrow configuration.
  • A parallel-aligned mirror provides additional line narrowing, analogous to Fabry-Perot etalons.

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Last Updated: Jul 7, 2026

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Main Results:

  • The MGI successfully narrowed the linewidth of a KrF excimer laser.
  • A minimal linewidth of 0.03 cm(-1) was achieved in the experimental setup.

Conclusions:

  • The multipass grating interferometer is an effective device for achieving narrow linewidths in excimer lasers.
  • The MGI offers a promising solution for applications demanding high spectral resolution from excimer laser sources.