Optical Amplification in 45 Deg - cut BaTiO3
Abstract
Two-wave coupling in Barium Titanate has been widely investigated because of the high gains predicted theoretically. In this report, optical scattering (or beam fanning) and it's effects on two-wave coupling gain and image amplification are investigated for 45 deg -cut BaTiO3 crystals. Experimental set-ups for beam fanning, two-wave coupling, and image amplification were designed to investigate signal and image outputs versus time. During beam fanning testing, records of transmitted intensity of a single input beam versus time were obtained for various entrance angles, and input intensities. Pump and signal output beam powers versus time were recorded for two-wave coupling tests. Input pump beam powers of 10, 1.0, and 0.1 mW were tested at a wavelength of 514.5 nm. Signal input beam powers ranging from 1.0 to .001 mW were used. In image amplification tests, the Fourier transform and a minified image of a resolution chart were amplified via two-wave coupling. Data from beam fanning and two-wave coupling tests implied that the beam fanning of the pump beam has negligible effect on the two-wave coupling gain of the output signal. Keywords: Electrooptics, Theses.
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 01, 1989
- Accession Number
- ADA216043
Entities
People
- Kenneth S. Keppler
Organizations
- Air Force Institute of Technology