Výsledky vyhledávání - "H.-W. Hübers"

Akademický článek

Terahertz transient stimulated emission from doped silicon

Autor: S. G. Pavlov, N. Deßmann, A. Pohl, R. Kh. Zhukavin, T. O. Klaassen, N. V. Abrosimov, H. Riemann, B. Redlich, A. F. G. van der Meer, J.-M. Ortega, R. Prazeres, E. E. Orlova, A. V. Muraviev, V. N. Shastin, H.-W. Hübers

Publikováno v: APL Photonics, Vol 5, Iss 10, Pp 106102-106102-8 (2020)

Transient-type stimulated emission in the terahertz (THz) frequency range has been achieved from phosphorus doped silicon crystals under optical excitation by a few-picosecond-long pulses generated by the infrared free electron lasers FELIX and CLIO.

Externí odkaz: https://doaj.org/article/cbca8294ca58479581a4e5c72b4baf60

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Akademický článek

Transmitters and receivers in SiGe BiCMOS technology for sensitive gas spectroscopy at 222 - 270 GHz

Autor: K. Schmalz, N. Rothbart, M. H. Eissa, J. Borngräber, D. Kissinger, H.-W. Hübers

Publikováno v: AIP Advances, Vol 9, Iss 1, Pp 015213-015213-8 (2019)

This paper presents transmitter and receiver components for a gas spectroscopy system. The components are fabricated in IHP’s 0.13 μm SiGe BiCMOS technology. Two fractional-N phase-locked loops are used to generate dedicated frequency ramps for th

Externí odkaz: https://doaj.org/article/68ec64040b4a4490b64ce66370da7cdd

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Akademický článek

Competing Inversion-Based Lasing and Raman Lasing in Doped Silicon

Autor: S. G. Pavlov, N. Deßmann, B. Redlich, A. F. G. van der Meer, N. V. Abrosimov, H. Riemann, R. Kh. Zhukavin, V. N. Shastin, H.-W. Hübers

Publikováno v: Physical Review X, Vol 8, Iss 4, p 041003 (2018)

We report on an optically pumped laser where photons are simultaneously generated by population inversion and by stimulated Raman scattering in the same active medium, namely crystalline silicon doped by bismuth (Si∶Bi). The medium utilizes three e

Externí odkaz: https://doaj.org/article/509c33305b594fc48ac75ec24b73c20c

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Akademický článek

Terahertz Stimulated Emission from Silicon Doped by Hydrogenlike Acceptors

Autor: S. G. Pavlov, N. Deßmann, V. N. Shastin, R. Kh. Zhukavin, B. Redlich, A. F. G. van der Meer, M. Mittendorff, S. Winnerl, N. V. Abrosimov, H. Riemann, H.-W. Hübers

Publikováno v: Physical Review X, Vol 4, Iss 2, p 021009 (2014)

Stimulated emission in the terahertz frequency range has been realized from boron acceptor centers in silicon. Population inversion is achieved at resonant optical excitation on the 1Γ_{8}^{+} → 1Γ_{7}^{−}, 1Γ_{6}^{−}, 4Γ_{8}^{−} intracen

Externí odkaz: https://doaj.org/article/bd635cb1203142c1b881ae6866b7844b

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Valley-orbit splitting of lithium-related donors in silicon

Autor: S. G. Pavlov, N. V. Abrosimov, H.-W. Hübers

Publikováno v: Physical Review B. 107

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::38bc6227872edc734f01411da799cd11
https://doi.org/10.1103/physrevb.107.115205

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Akademický článek

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Frequency stabilization of a terahertz quantum-cascade laser to the Lamb dip of a molecular absorption line

Autor: R. Voigt, M. Wienold, D. Jayasankar, V. Drakinskiy, J. Stake, P. Sobis, L. Schrottke, X. Lü, H. T. Grahn, H.-W. Hübers

Publikováno v: Optics Express. 31:13888

We demonstrate the frequency stabilization of a terahertz quantum-cascade laser (QCL) to the Lamb dip of the absorption line of a D2O rotational transition at 3.3809309 THz. To assess the quality of the frequency stabilization, a Schottky diode harmo

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::0eb99d2bb1c7fe51e424ceba9c15a5d7
https://doi.org/10.1364/oe.483883

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Phonon heat capacity and self-heating normal domains in NbTiN nanostrips

Autor: M Sidorova, A D Semenov, H-W Hübers, S Gyger, S Steinhauer

Self-heating normal domains in thin superconducting NbTiN nanostrips with the granular structure were characterized via steady-state hysteretic current–voltage characteristics measured at different substrate temperatures. The temperature dependence

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cfcd5bd59576916a1dc7010e9c914b67
http://arxiv.org/abs/2204.01423

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