title: Nonlinear frequency conversion using high-quality modes in GaAs nanobeam cavities.
abstract: We demonstrate the design, fabrication, and characterization of nanobeam photonic crystal cavities in (111)-GaAs with multiple high-Q modes, with large frequency separations (up to 740 nm in experiment, i.e., a factor of 1.5 and up to an octave in theory). Such structures are crucial for efficient implementation of nonlinear frequency conversion. Here, we employ them to demonstrate sum-frequency generation from 1300 and 1950 nm to 780 nm. These wavelengths are particularly interesting for quantum frequency conversion between Si vacancy centers in diamond and the fiber-optic network.
authors.forename: Sonia
authors.initials: S
authors.lastname: Buckley
authors.forename: Marina
authors.initials: M
authors.lastname: Radulaski
authors.forename: Jingyuan Linda
authors.initials: JL
authors.lastname: Zhang
authors.forename: Jan
authors.initials: J
authors.lastname: Petykiewicz
authors.forename: Klaus
authors.initials: K
authors.lastname: Biermann
authors.forename: Jelena
authors.initials: J
authors.lastname: Vučković