IMPROVED QUANTUM EFFICIENCY LASER DETECTORS.
Interim engineering rept.,
ITT INDUSTRIAL LABS FORT WAYNE IND
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This report covers the theoretical and experimental work completed during the first 4 months of the contract. An equation was derived relating photoelectric response to the optical and solid-state properties of photoemitters. The analysis includes the influence of multiple reflections of light from the photocathode boundaries and shows interference enhanced photoresponse for certain values of wavelength of the incident radiation and photocathode thickness. Photoelectric response for light entering the photocathode from the vacuum interface is compared to the response for light entering the photocathode from the glass interface for S-1 and S-20 photocathodes. The yield is generally found to be higher for light entering the photocathode from the glass substrate. It is believed that the relative yields of the two cases is partially determined by multiple reflections within the photocathode. The measurements of photoelectric yield versus photocathode thickness and experimental problems relating to the measurements are discussed. Experiments to be conducted during the remaining month of the contract are outlined. Author
- Electrical and Electronic Equipment
- Lasers and Masers