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Extreme-ultraviolet refractive optics.

L Drescher1, O Kornilov2, T Witting1

  • 1Max-Born-Institut, Berlin, Germany.

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|November 30, 2018
PubMed
Summary
This summary is machine-generated.

Scientists controlled extreme-ultraviolet (EUV) light refraction using a gas prism. This breakthrough enables the development of novel EUV refractive lenses, overcoming previous absorption limitations.

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Area of Science:

  • Optics and Photonics
  • Atomic and Molecular Physics

Background:

  • Refraction is fundamental for light manipulation across various wavelengths.
  • Extreme-ultraviolet (EUV) radiation is strongly absorbed by matter, limiting refractive optics development.
  • Current EUV focusing relies on reflective mirrors and diffractive Fresnel zone plates.

Purpose of the Study:

  • To demonstrate control over extreme-ultraviolet (EUV) light refraction.
  • To develop novel refractive optical elements for the EUV spectral region.
  • To overcome the limitations of high absorption in conventional EUV refractive optics.

Main Methods:

  • Utilized a gas jet with a controlled density gradient to create a refractive index profile.
  • Generated a gas-phase prism to deflect the EUV beam.
  • Investigated frequency-dependent deflection, particularly near atomic resonances.
  • Developed a deformable refractive lens by tuning gas pressure.

Main Results:

  • Successfully demonstrated the refraction of EUV radiation using a gas jet.
  • Created a gas-phase prism exhibiting frequency-dependent beam deflection.
  • Developed a tunable, low-absorption deformable refractive lens for EUV light.
  • Achieved deflection enhancement near atomic resonances.

Conclusions:

  • Control over EUV refraction is achievable using gas-phase media.
  • This work paves the way for applying refraction-based techniques to the EUV domain.
  • The developed deformable lens offers a new tool for EUV optics with tunable focal lengths and low absorption.