Zobrazeno 1 - 10
of 11
pro vyhledávání: '"S. H. Withers"'
Autor:
Richard J. Reeder, A. Schulte, S. H. Withers, Kenneth M. Beck, Wayne P. Hess, Robert E. Peale, G. Braunstein
Publikováno v:
Physics and Chemistry of Minerals. 30:440-448
Calcite crystals were grown from solution with single-crystal dimensions up to 3 mm and doped up to ∼0.1 at% with Nd3+ ions. Phase purity was verified by powder X-ray diffraction. The concentration of Nd3+ was measured by energy-dispersive spectrom
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::52773ff299a31fc5753be6945c2610aa
https://doi.org/10.1007/s00269-003-0331-5
https://doi.org/10.1007/s00269-003-0331-5
Autor:
Wayne P. Hess, R. A. Mason, S. H. Withers, Robert E. Peale, Richard J. Reeder, Kenneth M. Beck, Evert J. Elzinga
Publikováno v:
Geochimica et Cosmochimica Acta. 66:2875-2885
Extended X-ray absorption fine-structure (EXAFS) spectroscopy is used to characterize the local coordination of selected rare-earth elements (Nd3+, Sm3+, Dy3+, Yb3+) coprecipitated with calcite in minor concentrations from room-temperature aqueous so
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::adb56dc9cb1bd356dc112fa8bdc18746
https://doi.org/10.1016/s0016-7037(02)00888-8
https://doi.org/10.1016/s0016-7037(02)00888-8
Autor:
Robert E. Peale, C. J. Fredricksen, A. V. Muravjov, S.G. Pavlov, E.W. Nelson, S. H. Withers, V.N. Shastin, R. C. Strijbos
Publikováno v:
IEEE Journal of Quantum Electronics, 12(8), 1525-1530. Institute of Electrical and Electronics Engineers
The temporal dynamics, spectrum, and gain of the far-infrared p-Ge laser for composite cavities consisting of an active crystal and passive transparent elements have been studied with high temporal and spectral resolution. Results are relevant to imp
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::71594d32d82ef7a31b1faa3749f3dd8c
https://doi.org/10.1109/3.970898
https://doi.org/10.1109/3.970898
Autor:
H. Weidner, S.G. Pavlov, Andrei V. Muravjov, S. H. Withers, Robert E. Peale, V.N. Shastin, R. C. Strijbos
Publikováno v:
Applied Physics Letters, 76(15), 1996-1999. American Institute of Physics
Single axial-mode operation of the pulsed far-infrared p-Ge laser with an intracavity Fabry-Perot type frequency selector has been observed by means of Fourier-transform spectroscopy. A spectral resolution better than 1 GHz has been achieved on an or
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e6b34747f0cf977e6fe9888898e5cd1b
https://doi.org/10.1063/1.126233
https://doi.org/10.1063/1.126233
Publikováno v:
Journal of Applied Physics. 86:3512-3515
A solid state broad band amplifier of terahertz radiation (1.5–4 THz), based on intersubband transitions of hot holes in p-Ge is demonstrated. The gain is investigated as a function of applied magnetic and electric fields by transmission measuremen
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ac4b940c6cb4c566e7a86cdc2c0bbbd2
https://doi.org/10.1063/1.371250
https://doi.org/10.1063/1.371250
Autor:
Andrei V. Muravjov, R. C. Strijbos, Robert E. Peale, V.N. Shastin, S.G. Pavlov, S. H. Withers
Publikováno v:
Applied Physics Letters. 75:2882-2884
Active mode locking of the far-infrared p-Ge laser has been achieved in the Faraday configuration of electric and magnetic fields applied to the laser crystal. The laser generates 200 ps pulses of 80–110 cm−1 radiation with a laser-cavity roundtr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::736a1e17326a5846becc09545b70680f
https://doi.org/10.1063/1.125179
https://doi.org/10.1063/1.125179
Autor:
R. C. Strijbos, Andrei V. Muravjov, S.G. Pavlov, V.N. Shastin, S. H. Withers, C. J. Fredricksen, Robert E. Peale, W. Trimble
Publikováno v:
Applied Physics Letters. 74:167-169
Active mode locking of the far-infrared p-Ge laser giving a train of 200 ps pulses is achieved via gain modulation by applying an rf electric field together with an additional bias at one end of the crystal parallel to the Voigt-configured magnetic f
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::caa9cb3d912a44e93bed1c10d1f4a6bc
https://doi.org/10.1063/1.124221
https://doi.org/10.1063/1.124221
Autor:
Robert E. Peale, H. Weidner, Andrei V. Muravjov, S.G. Pavlov, R. C. Strijbos, C. J. Fredricksen, W. Trimble, V.N. Shastin, S. H. Withers
Publikováno v:
Applied Physics Letters. 73:3037-3039
Investigations of the dynamics of the far-infrared p-Ge laser emission reveal strong periodic soliton-like intensity spikes with less than 100 ps duration. We interpret these spikes as self-mode-locking of p-Ge laser modes. The effect becomes more pr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b4a32a1929af587d8589d83824fffefc
https://doi.org/10.1063/1.122664
https://doi.org/10.1063/1.122664
Autor:
R. C. Strijbos, C. J. Fredricksen, Andrei V. Muravjov, Robert E. Peale, S. H. Withers, S.G. Pavlov, V.N. Shastin
Publikováno v:
Advanced Solid State Lasers.
Temporal dynamics of the far-infrared p-Ge laser emission and its dependence on the laser cavity design have been studied in order to investigate the possibility of using intracavity elements for the purpose of active and passive mode locking. The po
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bf166554e3b33a5aa49679e5289460e1
https://doi.org/10.1364/assl.1999.tub7
https://doi.org/10.1364/assl.1999.tub7
Autor:
S.G. Pavlov, Robert E. Peale, R. C. Strijbos, V.N. Shastin, S. H. Withers, Andrei V. Muravjov
Publikováno v:
SPIE Proceedings.
Electric control of the separation between two interleaved pulse trains from a far-infrared ( I .5-4 THz) p-Ge laser, which isactively mode-locked by rf gain modulation at the second harmonic of the roundtrip frequency, is demonstrated by changing th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::70d90f4fe1a1f2c83b7026135216ee23
https://doi.org/10.1117/12.347123
https://doi.org/10.1117/12.347123