Sub-kilohertz linewidth narrowing of a mid-infrared optical parametric oscillator idler frequency by direct cavity stabilization
Authors: Ricciardi I., Mosca S., Parisi M., Maddaloni P., Santamaria L., De Natale P., De Rosa M.
Autors Affiliation: CNR-INO, Istituto Nazionale di Ottica, Via Campi Flegrei 34, Pozzuoli (NA), 80078, Italy; CNR-INO, Istituto Nazionale di Ottica, largo E. Fermi 6, Firenze, 50125, Italy
Abstract: We stabilize the idler frequency of a singly resonant optical parametric oscillator directly to the resonance of a mid-infrared Fabry-Perot reference cavity. This is accomplished by the Pound-Drever-Hall locking scheme, controlling either the pump laser or the resonant signal frequency. A residual relative frequency noise power spectral density below 103 Hz(2)/Hz is reached on average, with a Gaussian linewidth of 920 Hz over 100 ms, which reveals the potential for reaching spectral purity down to the hertz level by locking the optical parametric oscillator against a mid-infrared cavity with state-of-the-art superior performance. (C) 2015 Optical Society of America
Journal/Review: OPTICS LETTERS
Volume: 40 (20) Pages from: 4743 to: 4746
KeyWords: Fabry-Perot interferometers; Infrared devices; Locks (fasteners); Optical parametric oscillators; Power spectral density; Pumping (laser); Spectral density, Linewidth narrowing; Midinfrared; Pound-Drever-Hall locking; Relative frequencies; Resonant signal; Singly-resonant optical parametric oscillators; Spectral purity; State of the art, Parametric oscillatorsDOI: 10.1364/OL.40.004743Citations: 8data from “WEB OF SCIENCE” (of Thomson Reuters) are update at: 2019-10-20References taken from IsiWeb of Knowledge: (subscribers only)Connecting to view paper tab on IsiWeb: Click hereConnecting to view citations from IsiWeb: Click here