title: Polarization-mixing optical parametric oscillator.
abstract: We report the experimental realization of a new type of optical parametric oscillator in which oscillation is achieved by polarization rotation in a linear retarder, followed by nonlinear polarization mixing. The mixing is performed by a type II degenerate parametric downconversion in a periodically poled KTP crystal pumped by a 1064 nm pulsed Nd:YAG pump. A single, linearly polarized beam, precisely at the degenerate wavelength is generated. The output spectrum has a narrow linewidth (below the instrumentation bandwidth of 1 nm) and is highly stable with respect to variations in the crystal temperature.
authors.affiliation: Department of Physical Electronics, Tel-Aviv University, Tel-Aviv 69978, Israel.
authors.forename: Gal
authors.initials: G
authors.lastname: Kalmani
authors.forename: Ady
authors.initials: A
authors.lastname: Arie
authors.forename: Pinhas
authors.initials: P
authors.lastname: Blau
authors.forename: Shaul
authors.initials: S
authors.lastname: Pearl
authors.forename: Arlee V
authors.initials: AV
authors.lastname: Smith