Krzysztof Iwaszczuk
Krzysztof Iwaszczuk
optical engineer, NKT Photonics
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Flexible metamaterial absorbers for stealth applications at terahertz frequencies
K Iwaszczuk, AC Strikwerda, K Fan, X Zhang, RD Averitt, PU Jepsen
Optics express 20 (1), 635-643, 2012
Ultrafast terahertz control of extreme tunnel currents through single atoms on a silicon surface
V Jelic, K Iwaszczuk, PH Nguyen, C Rathje, GJ Hornig, HM Sharum, ...
Nature Physics 13 (6), 591-598, 2017
Terahertz radar cross section measurements
K Iwaszczuk, H Heiselberg, PU Jepsen
Optics Express 18 (25), 26399-26408, 2010
Experimental three-dimensional beam profiling and modeling of a terahertz beam generated from a two-color air plasma
P Klarskov, AC Strikwerda, K Iwaszczuk, PU Jepsen
New Journal of Physics 15 (7), 075012, 2013
Nitrogen plasma formation through terahertz-induced ultrafast electron field emission
K Iwaszczuk, M Zalkovskij, AC Strikwerda, PU Jepsen
Optica 2 (2), 116-123, 2015
Terahertz field enhancement to the MV/cm regime in a tapered parallel plate waveguide
K Iwaszczuk, A Andryieuski, A Lavrinenko, XC Zhang, PU Jepsen
Optics express 20 (8), 8344-8355, 2012
Simultaneous reference and differential waveform acquisition in time-resolved terahertz spectroscopy
K Iwaszczuk, DG Cooke, M Fujiwara, H Hashimoto, PU Jepsen
Optics Express 17 (24), 21969-21976, 2009
Impact ionization in high resistivity silicon induced by an intense terahertz field enhanced by an antenna array
AT Tarekegne, K Iwaszczuk, M Zalkovskij, AC Strikwerda, PU Jepsen
New Journal of Physics 17 (4), 043002, 2015
Terahertz-induced Kerr effect in amorphous chalcogenide glasses
M Zalkovskij, AC Strikwerda, K Iwaszczuk, A Popescu, D Savastru, ...
Applied Physics Letters 103 (22), 2013
Ultrabroadband terahertz conductivity of highly doped ZnO and ITO
T Wang, M Zalkovskij, K Iwaszczuk, AV Lavrinenko, GV Naik, J Kim, ...
Optical Materials Express 5 (3), 566-575, 2015
Impact ionization dynamics in silicon by MV/cm THz fields
AT Tarekegne, H Hirori, K Tanaka, K Iwaszczuk, PU Jepsen
New Journal of Physics 19 (12), 123018, 2017
Robust mapping of electrical properties of graphene from terahertz time-domain spectroscopy with timing jitter correction
PR Whelan, K Iwaszczuk, R Wang, S Hofmann, P Bøggild, PU Jepsen
Optics express 25 (3), 2725-2732, 2017
Linearity of air-biased coherent detection for terahertz time-domain spectroscopy
T Wang, K Iwaszczuk, EA Wrisberg, EV Denning, PU Jepsen
Journal of Infrared, Millimeter, and Terahertz Waves 37, 592-604, 2016
Terahertz time-domain spectroscopy of zone-folded acoustic phonons in 4H and 6H silicon carbide
AT Tarekegne, B Zhou, K Kaltenecker, K Iwaszczuk, S Clark, PU Jepsen
Optics Express 27 (3), 3618-3628, 2019
Permanently reconfigured metamaterials due to terahertz induced mass transfer of gold
AC Strikwerda, M Zalkovskij, K Iwaszczuk, DL Lorenzen, PU Jepsen
Optics express 23 (9), 11586-11599, 2015
Non-invasive terahertz field imaging inside parallel plate waveguides
K Iwaszczuk, A Andryieuski, A Lavrinenko, XC Zhang, PU Jepsen
Applied Physics Letters 99 (7), 2011
Amplification of resonant field enhancement by plasmonic lattice coupling in metallic slit arrays
P Klarskov, AT Tarekegne, K Iwaszczuk, XC Zhang, PU Jepsen
Scientific Reports 6 (1), 37738, 2016
Subcycle Nonlinear Response of Doped 4H Silicon Carbide Revealed by Two-Dimensional Terahertz Spectroscopy
AT Tarekegne, KJ Kaltenecker, P Klarskov, K Iwaszczuk, W Lu, H Ou, ...
ACS Photonics 7 (1), 221-231, 2019
In situ spectroscopic characterization of a terahertz resonant cavity
KS Reichel, K Iwaszczuk, PU Jepsen, R Mendis, DM Mittleman
Optica 1 (5), 272-275, 2014
Numerical investigation of terahertz emission properties of microring difference-frequency resonators
K Iwaszczuk, CZ Bisgaard, A Andronico, G Leo, PU Jepsen
IEEE Transactions on Terahertz Science and Technology 3 (2), 192-199, 2013
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