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Related Experiment Video

Updated: Jul 6, 2026

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

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

Published on: August 12, 2013

Ultraviolet interferometry with apochromatic reflection optics.

W Emer¹, J Schwider

¹Lehrstuhl für Optik, Physikalisches Institut, Uni Erlangen, Staudstrasse 7yBII, D-91058 Erlangen, Germany. wemer@move.physik.unierlangen.de

|March 6, 2008

Summary

Researchers developed a new interferometer for vacuum-ultraviolet wavelengths to enhance optical metrology resolution and sensitivity. This apochromatic design utilizes reflective optics for versatile measurements across a wide spectral range.

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Area of Science:

Optics and Photonics
Metrology
Vacuum Ultraviolet Technology

Background:

Improving resolution and sensitivity in optical metrology is crucial for advanced scientific and industrial applications.
Traditional interferometers often face limitations in spectral range and precision.
Vacuum-ultraviolet (VUV) wavelengths offer potential for enhanced metrological capabilities due to their short wavelengths.

Purpose of the Study:

To construct and evaluate an interferometer optimized for vacuum-ultraviolet (VUV) wavelengths.
To investigate the impact of VUV wavelengths on interferometric measurement resolution and sensitivity.
To explore the feasibility and challenges of using VUV light in metrology.

Main Methods:

Designed and built a novel interferometer utilizing an apochromatic optical configuration.
Incorporated reflective optics to enable measurements across a broad spectral range (157–900 nm).
Conducted interferometric measurements using various wavelengths, including VUV, to assess performance.

Main Results:

The VUV interferometer demonstrates potential for improved resolution and sensitivity in optical metrology.
The apochromatic design allows for effective use of wavelengths from 157 nm to 900 nm.
Successful interferometric measurements were achieved using the VUV system, validating the design.

Conclusions:

The developed VUV interferometer is a promising tool for advancing optical metrology.
The study highlights the benefits and technological considerations associated with VUV wavelength interferometry.
Further research can explore advanced applications of this technology for nanoscale metrology.