RESEARCH ON TECHNIQUES FOR LIGHT MODULATION DETECTION
Abstract:
An applied research program conducted by the Sylvania Microwave Device Division to establish techniques for light modulation detection is covered, and it concludes a one year program on amplitude modulation AM detectors. Sufficient information is provided for the detailed under standing, design and use of traveling-wave microwave phototubes TWPs. The major topics are 1 an analysis of the dependence of power output on the large spread in initial velocities from photoelectric cathodes 2 analysis of theversion of current modulation to velocity modula tion in the gun region of a TWP 3 detailed calculations of equivalent conductance, Geq, which expresses the way in which velocity modulation is converted to circuit power 4 compre hensive measurements on TWPs and comparison with detailed theory 5 suggestion and utilization of a novel technique for measuring Req and 6 a summary of research contributions on the AM demodulator program.