RADIOACTIVE CORONARY STENT WITH MULTIPLE HALF-LIVES

Not Available OPTRA,proposes to develop a low-cost laser sensor for recording illumination events during flight. The proposed sensor uses a diffraction grating, a CCD array, a fast photodiode, and signal processing electronics to extract and record illumination power, wavelength, pulse length, pulse repetition frequency, and event duration. The sensor possesses a wide two-dimensional field of coverage that is able to distinguish illumination from multiple locations as well as multiple wavelength sources. The sensor operates across the visible to mid Infrared with high resolution and uses low-noise electronics to achieve high bandwidth with large dynamic range. All the elements of the sensor are commerically off the shelf, low-costing parts that are mounted in a compact package. The sensor runs off of battery power and saves illumination event information in memory for post-mission downloading and processing on a personal computer. OPTRA will demonstrate the feasibility of the proposed laser sensor by designing a breadboard prototype and performed a detailed analysis.