Výsledky vyhledávání - "A.H. Makaryan"

Investigation of the Efficiency of Terahertz Radiation Generation in a Nonlinear Crystal Depending on the Parameters of Exciting Laser Beams

Autor: A.H. Makaryan, Y. S. Sahakyan

Publikováno v: Journal of Contemporary Physics (Armenian Academy of Sciences). 56:280-284

The generation of the THz radiation in a nonlinear single-domain lithium niobate crystal is considered. The lasing efficiency is investigated as a function of the angle between the directions of propagation of the exciting laser beams at different be

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::f1224f042d3dcac1a6c35ced33ad7204
https://doi.org/10.3103/s1068337221030154

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Surface-Emitting THz Generation in Two-Dimensional Quasi-Phase-Matching Structure

Autor: Yuri Avetisyan, G. Arabajyan, Masayoshi Tonouchi, A.H. Makaryan

Publikováno v: 2021 46th International Conference on Infrared, Millimeter and Terahertz Waves (IRMMW-THz).

Novel schemes to achieve surface-emitting multi-and nearly single-cycle THz generation by optical rectification in two-dimensional quasi-phase-matching (2-D QPM) structures are proposed. Placing 1-D phase mask in front of a conventional 1-D periodica

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d4d835d50108679ac23a680159f26ada
https://doi.org/10.1109/irmmw-thz50926.2021.9567617

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Effect of Absorption on the Efficiency of Terahertz Radiation Generation in the Metal Waveguide Partially Filled with Nonlinear Crystal LiNbO3, Dast or ZnTe

Autor: A. A. Hakhoumian, R. M. Martirosyan, A.H. Makaryan, A. S. Nikogosyan, V. R. Tadevosyan, S. V. Antipov, G. N. Goltsman

Publikováno v: Journal of Contemporary Physics (Armenian Academy of Sciences). 54:97-104

The influence of terahertz (THz) radiation absorption on the efficiency of generation of coherent THz radiation in the system ‘nonlinear-optical crystal partially filling the cross section of a rectangular metal waveguide’ has been investigated.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::88382f4eb716b6b1b8db16b3eaeb27b0
https://doi.org/10.3103/s1068337219010122

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Design of a Multistep Phase Mask for High-Energy Terahertz Pulse Generation by Optical Rectification

Autor: V. R. Tadevosyan, A.H. Makaryan, Yuri Avetisyan, Masayoshi Tonouchi

Publikováno v: Journal of Infrared, Millimeter, and Terahertz Waves. 38:1439-1447

A new scheme for generating high-energy terahertz (THz) pulses based on using a multistep phase mask (MSPM) is suggested and analyzed. The mask is placed on the entrance surface of the nonlinear optical (NLO) crystal eliminating the necessity of the

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::2a494e1a6907e1a6ebe487a5a36836cf
https://doi.org/10.1007/s10762-017-0429-3

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Investigation of parameters of terahertz pulses generated in single-domain LiNbO3 crystal by step-wise phase mask

Autor: A.H. Makaryan, Yu. H. Avetisyan, V. R. Tadevosyan, G. K. Abgaryan

Publikováno v: Journal of Contemporary Physics (Armenian Academy of Sciences). 51:35-40

A new scheme for the efficient generation of broadband terahertz radiation via optical rectification of femtosecond laser pulses in the single-domain lithium niobate crystal equipped with the step-wise phase mask (SPM) is investigated. It is shown th

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::f61aac00620aa2fc8a294cae2eef3e90
https://doi.org/10.3103/s1068337216010060

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Design of a multistep phase mask for high-energy THz pulse generation in ZnTe crystal

Autor: Yuri H. Avetisyan, V. R. Tadevosyan, A.H. Makaryan

Publikováno v: Terahertz Emitters, Receivers, and Applications VIII.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::b2a41bc99a97807e15a5324b1660ceda
https://doi.org/10.1117/12.2277388

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High Efficient Terahertz Generation Using Tilted-Pulse-Front Photoexcitation of Semiconductor Surface

Autor: Yu. H. Avetisyan, A.H. Makaryan, Masayoshi Tonouchi

Publikováno v: Conference on Lasers and Electro-Optics.

It is shown that photoexcitation of InAs surface with tilted-front laser pulses allows controlling the direction of terahertz emission and by that way achieving significant increase in the generated power.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::9816e1e46eef35b9a030d3eaf3ec3744
https://doi.org/10.1364/cleo_at.2017.jw2a.109

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