Accession Number:
ADA009901
Title:
Thin Film Light Sources for Integrated Optics.
Descriptive Note:
Final rept. 5 Feb 73-5 Nov 74,
Corporate Author:
ROCKWELL INTERNATIONAL CORP ANAHEIM CALIF ELECTRONICS RESEARCH DIV
Personal Author(s):
Report Date:
1975-04-01
Pagination or Media Count:
149.0
Abstract:
The study and experimental demonstration of concepts adapting existing laser media to a planar format such that it can be coupled to an optical waveguide compatible with representative integrated optical circuits is presented. The approach considers distributed-feedback waveguide lasers incorporating a coupler to extract the radiation and launch the radiation into the output waveguide. The distributed-feedback concept is employed because it is compatible with planar processing technology, eliminating orthogonal boundaries which are necessary for Fabry-Perot resonant structures. Several laser-waveguide coupler approaches amenable to both monolithic and hybrid approaches were investigated. Distributed-feedback stimulated emission was observed using both the fundamental 1150 A and third harmonic 3500 A gratings in an electron injection laser, using a quasi-double-heterostructure large optical cavity, where both liquid-phase and vapor-phase epitaxy were employed. A new side wall coupling technique appropriate for GaAs electron injection lasers was demonstrated which is compatible with either a distributed-feedback or Fabry-Perot resonant structure. This latter hybrid configuration was demonstrated to couple with a GaAlAs epitaxial waveguide on Al2O3 Through the evanescent field associated with the longitudinal active waveguide region.
Descriptors:
- *SEMICONDUCTOR LASERS
- *OPTICAL WAVEGUIDES
- *INFRARED LASERS
- *SEMICONDUCTING FILMS
- INJECTION LASERS
- ALUMINUM COMPOUNDS
- ELECTROOPTICS
- THIN FILMS
- FABRICATION
- INTEGRATED CIRCUITS
- OPTICAL COMMUNICATIONS
- SEMICONDUCTOR DIODES
- ALUMINUM OXIDES
- ARSENIDES
- GAS LASERS
- PHOTODIODES
- GALLIUM ARSENIDE LASERS
- WAVEGUIDE COUPLERS
Subject Categories:
- Lasers and Masers
- Fiber Optics and Integrated Optics
- Non-Radio Communications