Accession Number : ADA293976

Title :   Ultraviolet and Visible Lasers: Rare Earth-Doped Waveguide Devices and Non-Linear Optical Extraction Techniques.

Descriptive Note : Final rept. 1 Dec 91-30 Nov 94,

Corporate Author : ILLINOIS UNIV AT URBANA DEPT OF ELECTRICAL AND COMPUTER ENGINEERING

Personal Author(s) : Eden, J. G.

PDF Url : ADA293976

Report Date : DEC 1994

Pagination or Media Count : 37

Abstract : Over the past three years, AFOSR has supported a combined experiment at the University of Illinois that has focused on the demonstration and development of new coherent sources operating in the ultraviolet and short wavelength portion of the visible (green to violet). This research effort has two thrusts. Emphasis is being placed on the demonstration of fiber and planar waveguide lasers based upon upconversion processes in rare earth doped glasses. These devices have several attractive features for applications in communications, reprographics and medicine (in particular), including: (1) wide tunability (several nm), (2) broad absorption spectra suitable for diode laser pumping, (3) overall efficiencies exceeding 10% despite the required absorption of at least two pump photons, (4) pump-gain medium interaction lengths not normally available with bulk crystals, (5 ) the ability to integrate planar waveguide glass-based lasers with other devices such as EO-modulators and laser diodes, and (6) multiple wavelengths and high quantum efficiencies (>50%). (MM)

Descriptors :   *ELECTROOPTICS, *SEMICONDUCTOR LASERS, *NONLINEAR OPTICS, *OPTICAL WAVEGUIDES, LASER PUMPING, LASER INDUCED FLUORESCENCE, SEMICONDUCTOR DIODES, GLASS FIBERS, GAIN, VISIBLE SPECTRA, PHOTONS, EXTRACTION, LIGHT MODULATORS, ULTRAVIOLET SPECTRA, RARE EARTH ALLOYS.

Subject Categories : Fluidics and Fluerics
      Electrooptical and Optoelectronic Devices
      Optics

Distribution Statement : APPROVED FOR PUBLIC RELEASE