title: Glass micro-fibers for efficient third harmonic generation.
abstract: We introduce a rigorous theory of third-harmonic generation in optical waveguides and apply it to design a micro-fiber waveguide for efficient generation of third-harmonic radiation from infrared lasers. Phase-matching with efficient mode overlap is achieved in micro-fibers having a diameter roughly equal to half of the fundamental wavelength. Using a typical solid-state or fiber laser for pumping, high conversion efficiency is possible in only a few centimeters of a micro-fiber.
authors.forename: Victor
authors.initials: V
authors.lastname: Grubsky
authors.forename: Arthur
authors.initials: A
authors.lastname: Savchenko