Prism Couplers with Convex Output Surfaces for Nonlinear Cherenkov Terahertz Generation

被引：4

作者：

Kitaeva, Galiya Kh. ^{[1
]}

Markov, Dmitrii A. ^{[1
]}

Safronenkov, Daniil A. ^{[1
]}

Starkova, Natalia V. ^{[1
]}

机构：

[1] Lomonosov Moscow State Univ, Fac Phys, Moscow 119991, Russia

来源：

PHOTONICS | 2023年 / 10卷 / 04期

基金：

俄罗斯科学基金会;

关键词：

terahertz generation; optical rectification; sideways Cherenkov geometry; prism coupler; WAVE GENERATION; PULSE; CONVERSION; RADIATION;

D O I：

10.3390/photonics10040450

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Sideways THz generation in Mg:LiNbO3 crystal is studied considering Si-prism-lens couplers with different output surface curvatures. A theoretical approach is developed for modeling the angular distributions of THz radiation power inside the crystal, inside the Si coupler and outside in free space. Our calculations show how the imposition of a plano-convex lens on the standard flat prism can substantially improve the THz generation efficiency. The ratio between the lens curvature radius and the distance from the curvature center to the point of generation on the lens axis is found to be one of the most important parameters. The developed general approach can be used for the further design of the optimal THz extraction elements of a different configuration.

引用

页数：11

共 30 条

[1] Efficient Cherenkov-type terahertz generation in Si-prism-LiNbO3-slab structure pumped by nanojoule-level ultrashort laser pulses [J].

Bakunov, M. I. ;

Mashkovich, E. A. ;

Tsarev, M. V. ;

Gorelov, S. D. .

APPLIED PHYSICS LETTERS, 2012, 101 (15)

[2] Evaluation of eight nonlinear crystals for phase-matched Terahertz second-order difference-frequency generation at room temperature [J].

Bernerd, Cyril ;

Segonds, Patricia ;

Debray, Jerome ;

Roux, Jean-Francois ;

Herault, Emilie ;

Coutaz, Jean-Louis ;

Shoji, Ichiro ;

Minamide, Hiroaki ;

Ito, Hiromasa ;

Lupinski, Dominique ;

Zawilski, Kevin ;

Schunemann, Peter ;

Zhang, Xinyuan ;

Wang, Jiyang ;

Hu, Zhanggui ;

Boulanger, Benoit .

OPTICAL MATERIALS EXPRESS, 2020, 10 (02) :561-576

[3] Generation of Intense Terahertz Radiation via Optical Methods [J].

Blanchard, Francois ;

Sharma, Gargi ;

Razzari, Luca ;

Ropagnol, Xavier ;

Bandulet, Heidi-Christina ;

Vidal, Francois ;

Morandotti, Roberto ;

Kieffer, Jean-Claude ;

Ozaki, Tsuneyuki ;

Tiedje, Henry ;

Haugen, Harold ;

Reid, Matt ;

Hegmann, Frank .

IEEE JOURNAL OF SELECTED TOPICS IN QUANTUM ELECTRONICS, 2011, 17 (01) :5-16

[4] Generalized analysis of terahertz generation by tilted-pulse-front excitation in a LiNbO3 prism [J].

Bodrov, S. B. ;

Stepanov, A. N. ;

Bakunov, M. I. .

OPTICS EXPRESS, 2019, 27 (03) :2396-2410

[5] Highly efficient optical-to-terahertz conversion in a sandwich structure with LiNbO3 core [J].

Bodrov, S. B. ;

Stepanov, A. N. ;

Bakunov, M. I. ;

Shishkin, B. V. ;

Ilyakov, I. E. ;

Akhmedzhanov, R. A. .

OPTICS EXPRESS, 2009, 17 (03) :1871-1879

[6] Terahertz time-domain spectroscopy characterization of the far-infrared absorption and index of refraction of high-resistivity, float-zone silicon [J].

Dai, JM ;

Zhang, JQ ;

Zhang, WL ;

Grischkowsky, D .

JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS, 2004, 21 (07) :1379-1386

[7] Waveguided Approach for Difference Frequency Generation of Broadly-Tunable Continuous-Wave Terahertz Radiation [J].

De Regis, Michele ;

Consolino, Luigi ;

Bartalini, Saverio ;

De Natale, Paolo .

APPLIED SCIENCES-BASEL, 2018, 8 (12)

[8] The 2017 terahertz science and technology roadmap [J].

Dhillon, S. S. ;

Vitiello, M. S. ;

Linfield, E. H. ;

Davies, A. G. ;

Hoffmann, Matthias C. ;

Booske, John ;

Paoloni, Claudio ;

Gensch, M. ;

Weightman, P. ;

Williams, G. P. ;

Castro-Camus, E. ;

Cumming, D. R. S. ;

Simoens, F. ;

Escorcia-Carranza, I. ;

Grant, J. ;

Lucyszyn, Stepan ;

Kuwata-Gonokami, Makoto ;

Konishi, Kuniaki ;

Koch, Martin ;

Schmuttenmaer, Charles A. ;

Cocker, Tyler L. ;

Huber, Rupert ;

Markelz, A. G. ;

Taylor, Z. D. ;

Wallace, Vincent P. ;

Zeitler, J. Axel ;

Sibik, Juraj ;

Korter, Timothy M. ;

Ellison, B. ;

Rea, S. ;

Goldsmith, P. ;

Cooper, Ken B. ;

Appleby, Roger ;

Pardo, D. ;

Huggard, P. G. ;

Krozer, V. ;

Shams, Haymen ;

Fice, Martyn ;

Renaud, Cyril ;

Seeds, Alwyn ;

Stoehr, Andreas ;

Naftaly, Mira ;

Ridler, Nick ;

Clarke, Roland ;

Cunningham, John E. ;

Johnston, Michael B. .

JOURNAL OF PHYSICS D-APPLIED PHYSICS, 2017, 50 (04)

[9] Broadband terahertz wave generation from a MgO:LiNbO3 ridge waveguide pumped by a 1.5 μm femtosecond fiber laser [J].

Fan, Shuzhen ;

Takeuchi, Hajime ;

Ouchi, Toshihiko ;

Takeya, Kei ;

Kawase, Kodo .

OPTICS LETTERS, 2013, 38 (10) :1654-1656

[10] Highly efficient terahertz pulse generation by optical rectification in stoichiometric and cryo-cooled congruent lithium niobate [J].

Huang, W. Ronny ;

Huang, Shu-Wei ;

Granados, Eduardo ;

Ravi, Koustuban ;

Hong, Kyung-Han ;

Zapata, Luis E. ;

Kaertner, Franz X. .

JOURNAL OF MODERN OPTICS, 2015, 62 (18) :1486-1493

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