Experimental Investigation into a Method of Detecting SHF Modulated Laser Radiation by a Photocell,
Abstract
A device is described in which a SHF-modulated laser beam is modulated using a lithium niobate crystal and demodulated by use of a photoelectric multiplier photocathode. The modulator and demodulator are located in the same coaxial cavity resonator, in externally applied electrical and magnetic fields; the light beam passing through the modulator is reflected from a reflector mounted on a micrometer scale and a mirror to the photocathode. The phase difference between the signal received and the reference signal (the electrical field) is measured with a high degree of accuracy at the light flux minima registered on an oscillograph. Advantages and disadvantages of this method, compared with those of demodulation in a device identical to the modulator are discussed.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 26, 1974
- Accession Number
- ADA000230
Entities
People
- K. B. Gyunashyan
- R. A. Movsesyan
- V. A. Papyan
Organizations
- United States Army Foreign Science and Technology Center