Zobrazeno 1 - 10 of 29 pro vyhledávání: '"Adam Říha"'
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Akademický článek
Mid-Infrared Laser Generation of Zn1−xMnxSe and Zn1−xMgxSe (x ≈ 0.3) Single Crystals Co-Doped by Cr2+ and Fe2+ Ions—Comparison of Different Excitation Wavelengths
Autor: Adam Říha, Helena Jelínková, Maxim E. Doroshenko, Michal Jelínek, Jan Šulc, Michal Němec, David Vyhlídal, Nazar O. Kovalenko
Publikováno v: Materials, Vol 15, Iss 15, p 5277 (2022)
Two different mid-infrared (mid-IR) solid-state crystalline laser active media of Cr2+, Fe2+:Zn1−xMnxSe and Cr2+, Fe2+:Zn1−xMgxSe with similar amounts of manganese or magnesium ions of x ≈ 0.3 were investigated at cryogenic temperatures for thr
Externí odkaz: https://doaj.org/article/818cade09d2248629c2ac28963d52707
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2
2.3- and 4.4-μm Lasing in Cr, Fe:Zn1 –xMnxSe (x = 0.3) Single Crystal Pumped by Q-Switched Er:YLF Laser at 1.73 μm
Autor: Michal Jelínek, Adam Říha, Maxim E. Doroshenko, N. O. Kovalenko, Michal Němec, Igor S. Terzin, Helena Jelínková, Jan Šulc, David Vyhlídal
Publikováno v: Physics of Wave Phenomena. 28:231-235
Novel Cr2+ and Fe2+ co-doped Zn1–xMnxSe (x = 0.3) crystal with Cr2+ to Fe2+ ions concentration ratio of about 1 : 2 (both doping ions concentration were at the ~1018 cm–3 level) with a good optical quality was synthesized. Under pumping by a Q-sw
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::5049c7bd9251a2a3c7adf4ae8b9c06c8
https://doi.org/10.3103/s1541308x20030176
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3
Comparison of gain-switched operated Cr2+ and Fe2+ ions co-doped Zn(1-x)Mn(x)Se and Zn(1-x)Mg(x)Se (x ≈ 0.3) lasers in mid-IR under different excitation wavelengths
Autor: Michal Jelínek, Adam Říha, Igor S. Terzin, Maxim E. Doroshenko, Helena Jelínková, David Vyhlídal, N. O. Kovalenko, Michal Němec, Jan Šulc
Publikováno v: High Power Lasers and Applications.
Two different mid-infrared (mid-IR) crystalline laser active media of Zn1-xMnxSe and Zn1-xMgxSe with similar manganese or magnesium ions amount of x ≈ 0.3 co-doped by divalent chromium (Cr2+) and iron (Fe2+) ions were investigated at cryogenic temp
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::62b85f6caf3a0f4a46991ef94ceb7554
https://doi.org/10.1117/12.2589224
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4
Low temperature gain-switched operation of non-cubic Cr2+,Fe2+:Zn1-xMgxSe (x ≈ 0.2 and x ≈ 0.3) single crystals in mid-infrared under different excitation wavelengths
Autor: Adam Říha, N. O. Kovalenko, Michal Jelínek, Jan Šulc, Maxim E. Doroshenko, Helena Jelínková, Miroslav Cech, David Vyhlídal
Publikováno v: Solid State Lasers XXX: Technology and Devices.
Two novel cryogenically cooled non-cubic wurtzite structure Cr2+,Fe2+:Zn1-xMgxSe (x ≈ 0.2 and x ≈ 0.3) single crystals co-doped with Cr2+ and Fe2+ ions with thickness of 2.5 and 5 mm, respectively, were investigated under two excitation wavelengt
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::240f6d235a1cdb1f5a21ecb03db26218
https://doi.org/10.1117/12.2575879
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5
Comparison of Spectroscopic and Laser Properties of Cr2+,Fe2+:Zn1-xMnxSe (x ≈ 0.2 and x ≈ 0.4) Single Crystals under Er:YLF Laser Excitation at ~1.73 µm
Autor: Adam Říha, Helena Jelínková, Maxim E. Doroshenko, Michal Jelínek, Jan Šulc, Michal Němec, Miroslav Čech, Nazar O. Kovalenko
Publikováno v: Laser Congress 2021 (ASSL,LAC).
We report the Cr2+ → Fe2+ ions energy transfer under ~1.73 µm excitation of the Cr2+,Fe2+:Zn1-xMnxSe (x ≈ 0.2) single crystal for the first time and the results were compared with the crystal containing ~2× higher manganese amount (x ≈ 0.4) i
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::904208e641748e990ea1688ace7b16de
https://doi.org/10.1364/assl.2021.atu4a.3
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6
Fe:ZnMnTe laser generating around 5 um at 78 K
Autor: Maxim E. Doroshenko, Igor S. Terzin, Michal Jelínek, N. O. Kovalenko, Jan Šulc, Adam Říha, Helena Jelínková, David Vyhlídal
Publikováno v: Solid State Lasers XXIX: Technology and Devices.
Iron doped II-VI binary and ternary semiconductor materials are developed for mid-infrared (mid-IR) laser applications and some of them (ZnSe, ZnMnSe, ZnMgSe, CdMnTe) were already proven as laser active materials. In this article, the spectroscopic a
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::f80dc1eef046b7c0e161ccb207c9c150
https://doi.org/10.1117/12.2544753
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7
4.19 μm Fe2+ Ions Lasing in Zn1-xMnxSe:Cr2+,Fe2+ (x = 0.05) Single Crystal under 1.71 μm Laser Diode Pumping via Cr2+ → Fe2+ Ions Energy Transfer
Autor: Jan Šulc, N. O. Kovalenko, Maxim E. Doroshenko, Helena Jelínková, Michal Němec, David Vyhlídal, Michal Jelínek, Alexander G. Papashvili, Igor S. Terzin, Adam Říha
Publikováno v: OSA High-brightness Sources and Light-driven Interactions Congress 2020 (EUVXRAY, HILAS, MICS).
Laser-diode (~1.71 μm) pumped Zn1-xMnxSe:Cr2+,Fe2+ (x = 0.05) crystal through Cr2+→Fe2+ energy-transfer resulting in ~4.19 μm lasing within temperature range of 78–110 K, maximum mean laser output power of 4.1 mW, and slope-efficiency of 2.3% i
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::90de96da02f1ac335fe732843516adbe
https://doi.org/10.1364/euvxray.2020.jm3a.27
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8
Gain-switched laser operation of Cr2+,Fe2+:Zn1-xMgxSe (x ≈ 0.2; x ≈ 0.3) single crystals under Cr2+ → Fe2+ energy transfer at ~1.73 μm and direct Fe2+ ions excitation at ~2.94 μm
Autor: David Vyhlídal, Michal Němec, Helena Jelínková, Adam Říha, N. O. Kovalenko, Jan Šulc, Michal Jelínek, Maxim E. Doroshenko, Miroslav Cech
Publikováno v: Journal of Luminescence. 240:118375
Novel Zn1-xMgxSe (x ≈ 0.2 and x ≈ 0.3) single crystals co-doped with Cr2+ and Fe2+ ions were investigated. The excitation was performed either via the energy transfer from Cr2+ to Fe2+ ions with Q-switched Er:YLF laser at the wavelength of ~1.73
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::57154ad085d5efabe549f83e197f3a67
https://doi.org/10.1016/j.jlumin.2021.118375
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10
Temperature dependence of Cr:ZnSe active medium spectral and laser properties
Autor: Valerii V Badikov, Adam Říha, David Vyhlídal, Michal Němec, Miroslav Cech, Maxim E. Doroshenko, Helena Jelínková
Publikováno v: High-Power, High-Energy, and High-Intensity Laser Technology IV.
The interest in the development of coherent mid-infrared radiation sources is caused by its potential application in medicine, spectroscopy, laser remote sensing of the atmosphere, metrology, and in many other fields of interest. This study presents
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::018198892d746492e3ee5bf7e475366d
https://doi.org/10.1117/12.2520722
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