Highly-efficient generation of coherent light at 2128 nm via degenerate optical-parametric oscillation

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Autor/in:
Erscheinungsjahr:
2020
Medientyp:
Text
Schlagworte:
  • LIGO (Observatory)
  • Gravitational Waves
  • Thermal Noise
  • Galaxies
  • Stars
  • Planets
  • LIGO (Observatory)
  • Gravitational Waves
  • Thermal Noise
  • Galaxies
  • Stars
  • Planets
Beschreibung:
  • Cryogenic operation, in conjunction with new test–mass materials, promises to reduce the sensitivity limitations from thermal noise in gravitational-wave detectors. Currently, the most advanced materials under discussion are crystalline silicon as a substrate with amorphous silicon-based coatings. However, they require operational wavelengths around 2 µm to avoid laser absorption. Here we present a light source at 2128 nm based on a degenerate optical parametric oscillator to convert light from a 1064 nm nonplanar ring–oscillator. We achieve an external conversion efficiency of (87.1±0.4)% at a pump power of 52 mW in periodically poled potassium titanyl phosphate (internal efficiency was 93%). With our approach, light from the established and existing laser sources can be efficiently converted to the 2 µm regime while retaining the excellent stability properties.
  • Cryogenic operation, in conjunction with new test–mass materials, promises to reduce the sensitivity limitations from thermal noise in gravitational-wave detectors. Currently, the most advanced materials under discussion are crystalline silicon as a substrate with amorphous silicon-based coatings. However, they require operational wavelengths around 2 µm to avoid laser absorption. Here we present a light source at 2128 nm based on a degenerate optical parametric oscillator to convert light from a 1064 nm nonplanar ring–oscillator. We achieve an external conversion efficiency of ( 87.1 ± 0.4 ) % at a pump power of 52 mW in periodically poled potassium titanyl phosphate (internal efficiency was 93%). With our approach, light from the established and existing laser sources can be efficiently converted to the 2 µm regime while retaining the excellent stability properties.
Lizenz:
  • info:eu-repo/semantics/restrictedAccess
Quellsystem:
Forschungsinformationssystem der UHH
Interne Metadaten
Quelldatensatz
oai:www.edit.fis.uni-hamburg.de:publications/996d684c-e442-41c2-abcc-69474df727eb