RESEARCH OF TECHNIQUES FOR LIGHT MODULATION DETECTION. PART I. AMPLITUDE DEMODULATORS.
Final rept. (Part 1), 15 May 62-15 May 63,
SYLVANIA ELECTRONIC SYSTEMS-WEST MOUNTAIN VIEW CALIF ELECTRONIC DEFENSE LABS
Pagination or Media Count:
The results of a one-year applied research program on the demodulation of amplitude-modulated AM light are presented. Sufficient information is provided for the detailed understanding, design, and use of traveling-wave microwave phototubes TWPs, the most promising detector for broadband-modulated light. The report includes 1 the idealized analysis which first pointed out the more important TWP design considerations and operating characteristics 2 a more complete computeraided analysis which gives detailed information on the effects of the various beam-circuit parameters and operating conditions and 3 an analysis of the electron gun region, with emphasis on velocity spread and current density effects. The results of a detailed experimental analysis of the TWP are presented, providing both verification of the more complete theoretical treatment and information on generally-useful photodetector test techniques. Experimental data are given on several other types of photodetectors. A discussion of the design and construction of TWPs with S-1 photocathodes contains material of practical importance to TWP builders.