Showing papers on "Optical microcavity published in 1988"

Optical functional device of an optical waveguide type

Abstract: The present invention relates to an optical functional device of an optical waveguide type, particularly to an optical waveguide type with an organic nonlinear optical material suitable for the use in the fields of optical communication or optical information processing. In other words, the present invention provides an optical functional device having an organic nonlinear optical material as an optical waveguide embedded into the surface of a substrate and being an organic nonlinear optical material charged into a hollow part which is composed of a channel as a slit provided on the surface of said substrate and a further substrate for covering the upper part of the channel.

Tunable pulsed single longitudinal mode laser oscillator

Abstract: A laser system for producing pulsed, single longitudinal mode optical energy over a widely tunable range of wavelengths. The system includes an optical cavity and a solid-state gain medium. The optical cavity comprises first, second, and third optical element means. The first optical element means reflects energy received along a reflective optical path and directs the energy toward the second optical element means, which diffracts the optical energy onto a diffraction axis and an output axis. The energy diffracted along the diffraction axis is reflected back toward the second optical element means by a third optical element means, thereby creating a resonant optical cavity. The solid-state gain medium is located on the optical axis between the first and second optical element means and receives optical energy from a pump beam that is within two degrees of being colinear with the reflective optical path. The solid-state gain medium converts the pump beam energy to optical energy having a desires wavelength with a very high efficiency. The laser system is tunable by moving the third optical element means with respect to the second optical element means, thereby causing optical energy at a tunable wavelengh to resonate within the optical cavity.

Wavelength-resonant, Surface-emitting Semiconductor Laser: A Novel Quantum Optical Structure

Abstract: Wavelength-Resonant, Surface-Emitting Semiconductor Laser: A Novel Quantum Optical Structure M.Y.A. Raja, S.R.J. Brueck, M. Osinski, C.F. Schaus, J.G. Mclnerney, University of New Mexico, Albuquerque, NM and T.M. Brennan, B.E. Hammons, Sandia National Laboratories, Albuquerque, NM. We designed, fabricated and demonstrated lasing action in a novel vertical surface-emitting laser structure. The MBE-grown structure is a seriesof 10-nm thick GaAs quantum wells separated by 120-nm thick AlGaAs barriers for a spatially periodic gain medium resonant with the lasing wavelength. Lasing has been achieved by optical pumping with a gain length of only 320 nm.