scholarly journals Photo receiver with nanocluster subsystem

2020 ◽  
Vol 2 (3) ◽  
pp. 62-67
Author(s):  
Volodymyr V. Kovalchuk,
Keyword(s):  
Photo Receiver

The paper considers the effects associated with a change in the properties of a film heterojunction as a result of the introduction of a nanocluster subsystem.  Such a modified heterojunction exhibits a spectrally invertible photo ventile effect.  A design of a photocell containing two successively coupled p-n transitions of counter action, photoactive in different regions of the spectrum, is proposed.

scholarly journals Research Of The Boundary Of The Section Of A Photo Receiver Based On Mos pCdTe / CdO Structures

2020 ◽  
Vol 02 (10) ◽  
pp. 97-105
Author(s):  
Sh.B. Utamuradova ◽  
◽  
S.A. Muzafarova ◽  
Keyword(s):  
Composite Material ◽  
Thin Layer ◽  
Phase Analysis ◽  
Intermediate Layer ◽  
Base Material ◽  
Total Thickness ◽  
X Ray Diffraction ◽  
X Ray ◽  
Mos Structure ◽  
Photo Receiver

In this work, we investigated an intermediate layer in the structure of a photosensitive MOS structure nCdO / pCdTe . X-ray phase analysis shows that the intermediate layer between Mo and pCdTe is rather complex in composition. It contains dichalcogenides - three oxide MoO3 and a thin layer of a composite material with the composition of ditelluride MoTe2 . According to X-ray diffraction measurements, the total thickness of the intermediate layer is no more than ~ 200Ǻ. It was shown that in the nCdO / pCdTe structure the base material CdTe mainly consists of a homogeneous cubic modification layer.

scholarly journals CONTACTLESS MEASURING OF TEMPERATURE WITH DIFFERENTIAL PHOTO RECEIVER

2019 ◽  
Vol 3 ◽  
pp. 101 ◽  
Author(s):  
Tsanko Karadzhov ◽  
Dimcho Pulov ◽  
Nikolay Angelov
Keyword(s):  
Temperature Measurement ◽  
Spectral Sensitivity ◽  
Optical System ◽  
Microprocessor System ◽  
Single Chip ◽  
Photo Receiver

A method for contactless temperature measurement has been created with two photo receivers with different spectral sensitivity. An algorithm for processing the signals from both receivers of a single-chip microprocessor system has been developed. An optical system for the LWIR diapason of the spectrum is proposed.

Kovalev passive rangefinder

2021 ◽  
Vol 969 (3) ◽  
pp. 12-18
Author(s):  
S.V. Kovalev ◽  
D.A. Shapovalov
Keyword(s):  
Measurement Accuracy ◽  
Distance Measurement ◽  
Optical Path ◽  
Optical Scheme ◽  
Acceptable Error ◽  
Technical Result ◽  
Laser Range Finders ◽  
Digital Methods ◽  
Field Works ◽  
Photo Receiver

The authors present the results of longtime research on the development and improvement of a passive geodetic rangefinder based on the inbasis method of distance measurement. Actually, active laser range finders are not always effective at field works. An original compact optical scheme of a passive rangefinder based on a theodolite telescope and a mould photo receiver with application of digital methods for coordinate calculation is proposed. The distance and dimensions of the object are defined. The former is identified by the shift between the images on the horizontal axis. The merit of such a system is the absence of mechanical displacements. Its main advantage is an extremely simple optical path. The technical result is reduction in overall dimensions and weight, while maintaining an acceptable error in the passive range measurement. The use of Kovalev passive rangefinder is promising at performing geodetic measurements with total stations. There is also a description of the rangefinder sample as well as the calculations results according to the distance measurement accuracy.

PHOTOELECTRIC AMPLIFIED PROCESSES IN A GAS DISTRIBUTIVE CELL INCLUDING A SEMICONDUCTOR PHOTO RECEIVER AND PLASMA CONTACTS

2019 ◽  
Vol 5 (62) ◽  
pp. 22-26
Author(s):  
Kh.T. Yuldashev ◽  
Zh.M. Ibrohimov ◽  
U.S. Rustamov ◽  
K.M. Ergashev
Keyword(s):  
Photo Receiver

Double Sideband Suppressed Carrier Performance with Optical Balanced Detection

2013 ◽  
Vol 684 ◽  
pp. 600-603
Author(s):  
Kuo Chen Lang ◽  
Hui Kang Teng
Keyword(s):  
Quantum Noise ◽  
Phase Detection ◽  
Common Mode ◽  
Balanced Detection ◽  
Photo Receiver

A double sideband suppressed carrier (DSB-SC) achieved by optical balanced detection (OBD) approach with single photo-receiver instead of two is experimentally demonstrated. The OBD not only rejects common mode noises, it also enables the interferometer operating at dark fringe to achieve quantum noise limited (QNL) phase detection.

scholarly journals High sensitivity photo receiver design

2004 ◽  
Vol 17 (1) ◽  
pp. 121-131
Author(s):  
Zbigniew Bielecki ◽  
Wladyslaw Kolosowski ◽  
Edward Sedek
Keyword(s):  
Signal To Noise Ratio ◽  
High Sensitivity ◽  
Low Noise ◽  
Operating Conditions ◽  
Receiver Design ◽  
Signal To Noise ◽  
Optical Detectors ◽  
Noise Ratio ◽  
Photo Receiver

The paper describes low noise preampliers designed for optical detectors Analysis of operating conditions affecting signal-to-noise ratio has been carried out. Each preamplier was carefully optimized to work with particular type of the detector.

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