Zobrazeno 1 - 10
of 26
pro vyhledávání: '"Patrick F. Tekavec"'
Autor:
Deepu K. George, Timothy J. LaFave, Andrea G. Markelz, Ian McNee, Patrick F. Tekavec, Vladimir G. Kozlov, Peter G. Schunemann
Publikováno v:
Next-Generation Spectroscopic Technologies XII.
We demonstrate frequency domain THz anisotropy signature detection for protein crystal models using newly developed compact tunable narrow band THz sources based on Orientation Patterned Gallium Phosphide for turn-key spectroscopic systems.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0e0bd14659e45cd4830074acf8aae93a
https://doi.org/10.1117/12.2519878
https://doi.org/10.1117/12.2519878
Autor:
Ian McNee, Andrea Markelz, Deepu George, Patrick F. Tekavec, Peter G. Schunemann, Vladimir G. Kozlov
Publikováno v:
Nonlinear Frequency Generation and Conversion: Materials and Devices XVIII.
We demonstrate tunable narrowband THz generation by optical rectification of a femtosecond pulse in Orientation Patterned Gallium Phosphide. Center frequencies of 0.9 - 3.8 THz with average power up to 15 μW were achieved using a 1.064 µm fiber las
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::633eb2224fe7ab30ba1d6ed5a2fb4361
https://doi.org/10.1117/12.2510522
https://doi.org/10.1117/12.2510522
Autor:
Deepu George, Vladimir G. Kozlov, Patrick F. Tekavec, Andrea Markelz, Ian McNee, Peter G. Schunemann
Publikováno v:
Int Conf Infrared Millim Terahertz Waves
We demonstrate THz anisotropy signature determination of a protein crystal model using newly developed compact tunable narrow band THz sources for turn-key spectroscopic systems for the bio molecular community.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::83c8438696e65dfdf4eb83d0df73154b
https://doi.org/10.1109/irmmw-thz.2018.8510291
https://doi.org/10.1109/irmmw-thz.2018.8510291
Publikováno v:
2017 42nd International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz).
We propose a novel method for establishing and aligning a THz ellipsometry system and for calibrating ellipsometry signals for precise THz ellipsometry measurements. The method significantly improves the THz ellipsometry accuracy compared to the curr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2bd6b726ac08578845be19bfd775147b
https://doi.org/10.1109/irmmw-thz.2017.8067262
https://doi.org/10.1109/irmmw-thz.2017.8067262
Publikováno v:
Frontiers in Optics 2017.
We demonstrate tunable, narrowband THz generation by optical rectification of a femtosecond pulse in orientation patterned gallium phosphide. Center frequencies from 0.9 – 3.8 THz with average power up to 15 μW were obtained.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e6f8709ce15b2a813306ddf9bfab2298
https://doi.org/10.1364/fio.2017.jtu3a.69
https://doi.org/10.1364/fio.2017.jtu3a.69
Two-Dimensional Electronic Spectroscopy of the D1-D2-cyt b559 Photosystem II Reaction Center Complex
Autor:
Franklin D. Fuller, Jennifer P. Ogilvie, Patrick F. Tekavec, Jeffrey Myers, K. L. M. Lewis, Charles F. Yocum
Publikováno v:
The Journal of Physical Chemistry Letters. 1:2774-2780
We present two-dimensional electronic spectra of isolated D1-D2-cyt b559 reaction centers (PSII RC) at 77 K. We decompose the data into two-dimensional decay-associated spectra (2D DAS) to reveal the excitation- and detection-dependent spectral signa
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::12ecb8b1746a1426adcbe975d32f7f8f
https://doi.org/10.1021/jz100972z
https://doi.org/10.1021/jz100972z
Publikováno v:
2015 40th International Conference on Infrared, Millimeter, and Terahertz waves (IRMMW-THz).
We demonstrate video rate-terahertz imaging based on upconversion of THz pulses to the infrared. Mixing of narrow bandwidth THz pulses (centered at 1.5 THz) with strong IR pulses at 1064 nm generates sidebands separated from the IR spectrum by the TH
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::adc570c6d18d3d1d5104d5c02198c819
https://doi.org/10.1109/irmmw-thz.2015.7327921
https://doi.org/10.1109/irmmw-thz.2015.7327921
Publikováno v:
SPIE Proceedings.
We demonstrate video rate THz imaging in both reflection and transmission by frequency upconverting the THz image to the near-IR. In reflection, the ability to resolve images generated at different depths is shown. By mixing the THz pulses with a por
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::36d647c74d8c344ce21d4dcc382af235
https://doi.org/10.1117/12.2176843
https://doi.org/10.1117/12.2176843
Publikováno v:
SPIE Proceedings.
We demonstrate video rate THz imaging by detecting a frequency upconverted signal with a CMOS camera. A fiber laser pumped, double resonant optical parametric oscillator generates THz pulses via difference frequency generation in a quasi-phasematched
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6dc9e52d504caea444eb5ba8e9fc8dc5
https://doi.org/10.1117/12.2080379
https://doi.org/10.1117/12.2080379
Autor:
Vladimir G. Kozlov, Patrick F. Tekavec
Publikováno v:
AIP Conference Proceedings.
Many biological and chemical compounds have unique absorption features in the THz (0.1 - 10 THz) region, making the use of THz waves attractive for imaging in defense, security, biomedical imaging, and monitoring of industrial processes. Unlike optic
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2d38cc20e67fa782b6265b84dda3199c
https://doi.org/10.1063/1.4865011
https://doi.org/10.1063/1.4865011