Prof. Nikolay Petrovich Shestakov Profile

Prof. Nikolay Petrovich Shestakov

at Kirensky Institute of Physics

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Proceedings Article | 5 March 2008 Paper

Interference sensitive selective photodetector

Alexander Ivanenko, Vasily Shabanov, Anatoly Sysoev, Nikolay Shestakov

Proceedings Volume 7009, 70091K (2008) https://doi.org/10.1117/12.795313

KEYWORDS: Photodetectors, Interferometers, Mirrors, Transmittance, Sensors, Eye, Electronic filtering, Laser metrology, Beam splitters, Optical filters

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Principles of interference sensitive selective photodetector are described. The schema of R,G,B photodetector with four layers sensitive to interference patterns (standing wave) is presented. Computer calculation of spectral sensitivity band was made for R,G,B-photodetector in connecting with a place and optical distance from zero optical path difference. The interferometers with an opposing direction of beams are reduced in the field of a location of a interference sensitive selective photodetector are described. The schema of interference sensitive selective photodetector with two outputs for a transmitting and band-elimination filter is presented. Results of computer accounts of sensitivity the interference sensitive selective photodetector were made on rejection and rejection outputs.

Proceedings Article | 29 July 2002 Paper

Photodetector interference field

Nico Shestakov, A. Ivanenko, A. Sysoev

Proceedings Volume 4900, (2002) https://doi.org/10.1117/12.484537

KEYWORDS: Photodetectors, Interferometers, Mirrors, Holography, Silicon, Absorption, Wavefronts, Holograms, Beam splitters, Distortion

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Traditionally, special optical systems are used for observation of interference fields. Such a system is an interferometer, in which a beam oflight source is divided into two. The names oflight beams are object and reference. The way in which the light beams are integrated and transferred in the area of the image depends on the interferometer type. The Fizeau and Michelson interferometers are used often. In all these interferometers the course of reference and object light beams going in one direction is interrupted on photodetectors. The energy of light beams is absorbed by a photosensitive material of the photodetector, being transformed into a photoelectric signal. The photodetectors of different types: photodiodes, photoelectric multiplying tubes pyroelectric, solid-state detectector arrays are used for registration of interferogram. The known photodetectors considerably distort the course of light beams. Their large absorption distorts the form of the wavefront. This article provides a presentation of photodetector having a sensitivity to distribution of the interference field of light waves in space and time. The photodetector has a small distortion of the wavefront. It does not destruct the interference field. Thus, the process of measurement influences the interference field only slightly. The photodetector can be used for registration of distribution of an interference field in space and time. The use of photodetector is for measurement of light streams extending in opposite directions. The application of the photodetector allows simplifying the optical schemes. Beam splitters and reference mirrors are not necessary. Some example applications photodetector are presented. A simple interferometer for a measuring transitions and holographic images is described.

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