Two-octave-wide (3–12 µm) subharmonic produced in a minimally dispersive optical parametric oscillator cavity

Academic Article


  • We report a subharmonic (frequency-divide-by-2) optical parametric oscillator (OPO) with a continuous wavelength span of 3 to 12 µm (−37 dB level) that covers most of the molecular rovibrational “signature” region. The key to obtaining such a wide spectral span is the use of an OPO with a minimal dispersion—through the choice of intracavity elements, the use of all gold-coated mirrors, and a special “injector” mirror. The system delivers up to 245 mW of the average power with the conversion efficiency exceeding 20% from a 2.35 µm Kerr-lens mode-locked pump laser.
  • Authors

    Published In

  • Optics Letters  Journal
  • Digital Object Identifier (doi)

    Author List

  • Ru Q; Kawamori T; Schunemann PG; Vasilyev S; Mirov SB; Vodopyanov KL
  • Start Page

  • 709
  • End Page

  • 712
  • Volume

  • 46
  • Issue

  • 4