Zobrazeno 1 - 10
of 32
pro vyhledávání: '"C. J. Fredricksen"'
Autor:
Glenn D. Boreman, A. V. Maslovsky, V. L. Vaks, G. Braunstein, A. V. Muravjov, S. D. Nikifirov, Robert E. Peale, H. Saxena, C. J. Fredricksen
Publikováno v:
International Journal of High Speed Electronics and Systems. 18:627-637
This paper presents comparative analysis of different wavelength ranges for the spectroscopic detection of acetone vapor. We collected and analyzed original absorption line spectra arising from electronic transitions in the ultraviolet, near-infrared
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d186c24402d27843bf2310969c6b3db3
https://doi.org/10.1142/s012915640800562x
https://doi.org/10.1142/s012915640800562x
Autor:
H. M. Quddusi, Timothy A. Lachenmeier, Joshua Colwell, Russell G. Dewey, Sebastian Padilla, Alan Stern, D. Maukonen, Robert E. Peale, Seth Calhoun, C. J. Fredricksen, Rolfe Bode, Andrei V. Muraviev
Publikováno v:
Sensors for Extreme Harsh Environments II.
The Planetary Atmospheres Minor Species Sensor (PAMSS) is an intracavity laser absorption spectrometer that uses a mid-infrared quantum cascade laser in an open external cavity for sensing ultra-trace gases with parts-per-billion sensitivity. PAMSS w
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::24ab740dfd569d07e2a48464c7197846
https://doi.org/10.1117/12.2176621
https://doi.org/10.1117/12.2176621
Autor:
Seth Calhoun, Edward Alan Dein, John Lannon, Aubrey Coffey, Kevin R. Coffey, Scott Goodwin, Robert E. Peale, Joseph D. LaVeigne, Gregory Franks, Stephen Trewick, C. J. Fredricksen, Tom Danielson
Publikováno v:
SPIE Proceedings.
High pixel temperatures for IR scene projector arrays face materials challenges of oxidation, diffusion, and recrystallization. For cost effective development of new high-temperature materials, we have designed and fabricated simplified pixels for te
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::809ab5d409d6a2c41323a78740140d3c
https://doi.org/10.1117/12.2177025
https://doi.org/10.1117/12.2177025
Autor:
E.W. Nelson, William G. Vernetson, Andrei V. Muravjov, Elena Flitsiyan, Robert E. Peale, T. W. Du Bosq, C. J. Fredricksen, M. V. Dolguikh, S. H. Kleckley
Publikováno v:
Journal of Applied Physics. 96:1-6
A far-infrared p-type germanium laser with active crystal prepared from ultra pure single-crystal Ge by neutron transmutation doping (NTD) is demonstrated. Calculations show that the high uniformity of Ga acceptor distribution achieved by NTD signifi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::276a32db45dbfa5129108dd79969da38
https://doi.org/10.1063/1.1753659
https://doi.org/10.1063/1.1753659
Autor:
T. W. Du Bosq, N. Tache, Andrei V. Muravjov, David B. Tanner, Robert E. Peale, E.W. Nelson, C. J. Fredricksen
Publikováno v:
Journal of Applied Physics. 94:5474-5478
A robust metal-free intracavity fixed-wavelength selector for the cryogenically cooled far-infrared p-Ge laser is demonstrated. The device is a back mirror consisting of a thin silicon etalon and dielectric SrTiO3 flat. A laser line width of 0.2 cm
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::912d7fe2dfeef81cc66e6e4aff042618
https://doi.org/10.1063/1.1618934
https://doi.org/10.1063/1.1618934
Publikováno v:
Infrared Physics & Technology. 44:75-78
Operation of a far-infrared (1.5–4.2 THz) p-Ge laser in an open quasi-optical resonator is demonstrated. This contrasts with previous designs where mirrors were fixed to surfaces of the active crystal. Enhanced stability and tuning of the laser cav
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::244d613666bb8564aacb7d3c936d3f1f
https://doi.org/10.1016/s1350-4495(02)00160-3
https://doi.org/10.1016/s1350-4495(02)00160-3
Autor:
Andrei V. Muraviev, Ammar Alhasan, Seth Calhoun, Guy Zummo, Joshua Colwell, Robert E. Peale, Doug Maukonen, C. J. Fredricksen
Publikováno v:
SPIE Proceedings.
The Planetary Atmospheres Minor Species Sensor (PAMSS) is an ultra-trace gas sensor. This paper reports its transition from a Technical Readiness Level of 4 (TRL4) to TRL 5 and an established path forward to TRL6. This report describes tests of PAMSS
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c7a574ddeea866950c94235a0cc8912d
https://doi.org/10.1117/12.2050169
https://doi.org/10.1117/12.2050169
Autor:
C. J. Fredricksen, Robert E. Peale, Janardan Nath, Isaiah O. Oladeji, Farnood K. Rezaie, Deep Panjwani
Publikováno v:
SPIE Proceedings.
Streaming Process for Electrode-less Electrochemical Deposition (SPEED) method is used to create complex thin-film structures, such as KBNNO, in a single step, in contrast to hydrothermal approaches with separate nanoparticle growth and deposition pr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b7156944418a80d6c6ff4442b044a517
https://doi.org/10.1117/12.2050707
https://doi.org/10.1117/12.2050707
Autor:
Justin W. Cleary, Masa Ishigami, Robert E. Peale, C. J. Fredricksen, Christian W. Smith, Doug Maukonen
Publikováno v:
Micro- and Nanotechnology Sensors, Systems, and Applications VI.
We have invented a novel photodetector by mating a surface plasmon resonance coupler with a graphene field effect transistor. The device enables wavelength selectivity for spectral sensing applications. Surface plasmon polaritons (SPPs) are generated
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d012f0ed0b8d6a5254a0a8c76a1b6875
https://doi.org/10.1117/12.2050018
https://doi.org/10.1117/12.2050018
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