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Armenian Journal of Physics=Ֆիզիկայի հայկական հանդես
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Investigation of Detection of Electromagnetic Radiation in The Plasma at The Constant Electric Field
Ստեղծողը:
G. Gulakyan ; A. H. Makaryan ; R. Miroyan
Համատեղ հեղինակները:
Yerevan State University, Department of Radiophysics ; Yerevan State University, Information Systems Service and Development Department, Ijevan Branch, Ijevan, Armenia
Խորագիր:
Physics ; Electronics; radiowave and microwave technology; direct energy conversion and storage
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The present paper deals on the investigation results of the detection of electromagnetic radiation in a glow discharge plasma of various gases. The voltage to the lamp is applied from a current source, providing a glow discharge in the lamp. It was shown that the detection efficiency depends strongly on the shape of the I-V characteristic of a gas-discharge lamp, as well as on the applied voltage (electric field). The different types of neon gas-discharge lamps were used as detectors. We also investigated the detection of a pulsed neodymium laser in air at an external electric field. Under the joint action of the laser pulse and the applied electric field, in the focusing region of the laser beam breakdown of air occurs. Thanks to the constant applied field, the created plasma behaves as a medium with a quadratic nonlinearity, which makes it possible to detect the electromagnetic radiation.