title: Pump-tunable continuous-wave singly resonant optical parametric oscillator from 2.5 to 4.4 microm.
abstract: We report a continuous-wave singly resonant optical parametric oscillator pumped by a widely tunable titanium-doped sapphire ring laser. It produces up to 0.8 W of mid-infrared power. The wavelength can be tuned in a few seconds from 2.5 to 3.5 microm or from 3.4 to 4.4 microm and scanned up to 40 GHz without mode-hops by only changing the pump beam wavelength. Spectroscopic capability is demonstrated by measuring parts of the photoacoustic absorption spectrum of NH(3) near 3196 cm(-1).
authors.affiliation: Laboratory of Physical Chemistry, Department of Chemistry, (A.I. Virtasen aukio 1), University of Helsinki, Finland.
authors.forename: Mikael
authors.initials: M
authors.lastname: Siltanen
authors.forename: Markku
authors.initials: M
authors.lastname: Vainio
authors.forename: Lauri
authors.initials: L
authors.lastname: Halonen
mesh_terms: D000537:Aluminum Oxide; D004867:Equipment Design; D007834:Lasers; D008277:Magnesium Oxide; D009354:Neodymium; D009556:Niobium; D055095:Optics and Photonics / Q000295:instrumentation* / Q000379:methods*; D010087:Oxides; D013057:Spectrum Analysis / Q000295:instrumentation* / Q000379:methods*; D014025:Titanium
chemical_list: D010087:Oxides; D009556:Niobium; C091692:lithium niobate; D009354:Neodymium; D008277:Magnesium Oxide; D014025:Titanium; D000537:Aluminum Oxide