Multi-Quantum Well Lateral-Field-Effect Electro-Refraction

Award Information
Agency: Department of Defense
Branch: Missile Defense Agency
Contract: N/A
Agency Tracking Number: 18092
Amount: $49,765.00
Phase: Phase I
Program: SBIR
Awards Year: 1992
Solicitation Year: N/A
Solicitation Topic Code: N/A
Solicitation Number: N/A
Small Business Information
One Patriots Park, Bedford, MA, 01730
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 H. Paul Maruska
 (617) 275-6000
Business Contact
Phone: () -
Research Institution
Band gap resonant optical non-linearities in III-V compound semiconductor materials provide the basis for novel components, allowing advances in optical signal processing. Of particular interest are temporal and spatial light modulators, which find applications in optical interconnects, optical computing, and logic circuits. Spire will characterize an advanced GaAs multi-quantum well structure which will exhibit the Lateral-Electric-Field-Induced-Refraction (LEFIR) effect. The lightwave propogates transverse to the stack of grown layers, while the electric field, applied laterally due to the removal of a two-dimensional electron gas supplied by planar doping, induces changes in the refractive index of the active region containing the quantum wells. The transmissive modes are shifted in wavelength when the effective refractive index of the active region is altered by the applied field, modulating intensity. Without mirrors, the device can shift the phase of incident light. EFIR modulators can be extended into two-dimensional arrays with applications as spatial light modulators.

* Information listed above is at the time of submission. *

Agency Micro-sites

SBA logo
Department of Agriculture logo
Department of Commerce logo
Department of Defense logo
Department of Education logo
Department of Energy logo
Department of Health and Human Services logo
Department of Homeland Security logo
Department of Transportation logo
Environmental Protection Agency logo
National Aeronautics and Space Administration logo
National Science Foundation logo
US Flag An Official Website of the United States Government