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Small Business Innovation Research/Small Business Tech Transfer

Modified High Gain APDs for Multi-beam Ladar Instrumentation

Completed Technology Project

Project Description

Modified High Gain APDs for Multi-beam Ladar Instrumentation
In this effort, Radiation Monitoring Devices, Inc. (RMD) addresses NASA's request for sensitive, high quantum efficiency (QE) optical detectors for space- and ground-based light detection and ranging (Lidar) instruments. We propose to address this need by utilizing our latest designs in solid state photodetectors, and providing optimal receiver solutions needed for NASA's ongoing and future science missions. The solid state photodetectors that will be evaluated for this program will include RMD's large-area, high-gain proportional mode avalanche photodiodes (APD). The focus will be on modification of RMD's existing structure to improve responsivity and bandwidth in the blue and ultra-violet (UV) region of the spectrum. Preliminary studies have shown that UV responsivity and bandwidth of our large area detectors can be increased through the application of a modified surface layer using a well-established processing method. The proposed receiver technology readiness level (TRL) is estimated at 2. The Phase I effort will utilize experimental and theoretical studies to confirm the feasibility of the defined approach, resulting in a prototype design with a TRL of 3-4. In Phase II, the prototype receiver will be fabricated and evaluated. A TRL of 5-6 will be reached by the end of this SBIR program. More »

Anticipated Benefits

Primary U.S. Work Locations and Key Partners

Technology Transitions

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This is a historic project that was completed before the creation of TechPort on October 1, 2012. Available data has been included. This record may contain less data than currently active projects.