scholarly journals On the efficiency of backward collinear acousto-optic interaction between terahertz radiation and acoustic beam in hexane

2020 ◽  
Author(s):  
Pavel A. Nikitin
Keyword(s):  
Terahertz Radiation ◽  
Acoustic Beam ◽  
Acousto Optic Interaction

scholarly journals Dependence of the energy efficiency of the acousto-optic modulator of terahertz radiation on the dimensions of the ultrasound transducer

2021 ◽  
Vol 2091 (1) ◽  
pp. 012011
Author(s):  
P A Nikitin ◽  
A K Nikitin
Keyword(s):  
Energy Efficiency ◽  
Experimental Investigation ◽  
Terahertz Radiation ◽  
Sulfur Hexafluoride ◽  
Maximum Energy ◽  
Ultrasound Transducer ◽  
Optimal Size ◽  
Acousto Optic Interaction ◽  
Acousto Optic Modulator ◽  
Ultrasound Power

Abstract The paper presents results of experimental investigation of an acousto-optic modulator of terahertz radiation based on liquefied sulfur hexafluoride. It was found that the intensity of diffracted radiation at a fixed ultrasound power depends on the dimensions of the ultrasound transducer. The optimal size of the ultrasound transducer in the direction orthogonal to the plane of the acousto-optic interaction was determined, at which the maximum energy efficiency of the acousto-optic modulator was achieved.

Composite right/left-handed transmission line with array of thermocouples for generating terahertz radiation

2020 ◽  
Vol 92 (2) ◽  
pp. 20502
Author(s):  
Behrokh Beiranvand ◽  
Alexander S. Sobolev ◽  
Anton V. Kudryashov
Keyword(s):  
Transmission Line ◽  
Terahertz Radiation ◽  
Transmission Lines ◽  
Software Package ◽  
Optical Pulses ◽  
Capacitively Coupled ◽  
Voltage Difference ◽  
Left Handed ◽  
Microwave Transmission ◽  
Commercial Software Package

We present a new concept of the thermoelectric structure that generates microwave and terahertz signals when illuminated by femtosecond optical pulses. The structure consists of a series array of capacitively coupled thermocouples. The array acts as a hybrid type microwave transmission line with anomalous dispersion and phase velocity higher than the velocity of light. This allows for adding up the responces from all the thermocouples in phase. The array is easily integrable with microstrip transmission lines. Dispersion curves obtained from both the lumped network scheme and numerical simulations are presented. The connection of the thermocouples is a composite right/left-handed transmission line, which can receive terahertz radiation from the transmission line ports. The radiation of the photon to the surface of the thermocouple structure causes a voltage difference with the bandwidth of terahertz. We examined a lossy composite right/left-handed transmission line to extract the circuit elements. The calculated properties of the design are extracted by employing commercial software package CST STUDIO SUITE.

Selective Properties of a Planar Electrodynamic System for Two-Stage Generation of Terahertz Radiation

2018 ◽  
Vol 13 (1) ◽  
pp. 13-24
Author(s):  
A. V. Arzhannikov ◽  
◽  
P. V Kalinin ◽  
E. S. Sandalov ◽  
S. L. Sinitsky ◽  
...  
Keyword(s):  
Terahertz Radiation ◽  
Electrodynamic System ◽  
Two Stage

Electro-optical detection of terahertz radiation in a zinc sulphide crystal at a wavelength of 512 nm

2020 ◽  
Vol 13 (11) ◽  
pp. 112007
Author(s):  
Joel Edouard Nkeck ◽  
Xavier Ropagnol ◽  
Riad Nechache ◽  
François Blanchard
Keyword(s):  
Terahertz Radiation ◽  
Optical Detection ◽  
Zinc Sulphide

Photon Counting Microscopy of Terahertz Radiation

2008 ◽  
Vol 36 (Supplement) ◽  
pp. 130-131
Author(s):  
Kenji Ikushima
Keyword(s):  
Terahertz Radiation ◽  
Photon Counting

Integrated optic a.d. convertor based on bulk acousto-optic interaction

1980 ◽  
Vol 16 (10) ◽  
pp. 359 ◽  
Author(s):  
M. Gottlieb ◽  
G.B. Brandt
Keyword(s):  
Acousto Optic Interaction

Generation of Terahertz Radiation in Magnetic Junctions Based on Nanowires

2019 ◽  
Vol 45 (3) ◽  
pp. 271-273 ◽  
Author(s):  
Yu. V. Gulyaev ◽  
S. G. Chigarev ◽  
A. I. Panas ◽  
E. A. Vilkov ◽  
N. A. Maksimov ◽  
...  
Keyword(s):  
Terahertz Radiation
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