Details
| Original language | English |
|---|---|
| Article number | 7444 |
| Journal | Scientific Reports |
| Volume | 9 |
| Issue number | 1 |
| Early online date | 15 May 2019 |
| Publication status | Published - 2019 |
Abstract
Up to now, full tunability of waveforms was possible only in electronics, up to radio-frequencies. Here we propose a new concept of producing few-cycle terahertz (THz) pulses with widely tunable waveforms. It is based on control of the phase delay between different parts of the THz wavefront using linear diffractive optical elements. Suitable subcycle THz wavefronts can be generated via coherent excitation of nonlinear low-frequency oscillators by few-cycle optical pulses. Using this approach it is possible to shape the electric field rather than the slow pulse envelope, obtaining, for instance, rectangular or triangular waveforms in the THz range. The method is upscalable to the optical range if the attosecond pump pulses are used.
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In: Scientific Reports, Vol. 9, No. 1, 7444, 2019.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Unusual terahertz waveforms from a resonant medium controlled by diffractive optical elements
AU - Pakhomov, A. V.
AU - Arkhipov, R. M.
AU - Arkhipov, M. V.
AU - Demircan, Ayhan
AU - Morgner, Uwe
AU - Rosanov, N. N.
AU - Babushkin, Ihar
N1 - Funding Information: Russian Science Foundation, project 17-19-01097 (theoretical consideration in sections 1.3–1.5 and analysis of pulse shaping by DOE in section 2). Russian Foundation for Basic Research, 19-02-00312a (demonstration of quasi-unipolar pulse generation in RAM in section 1.2). I.B., A.D. and U.M. are thankful to Deutsche Forschunggemeinschaft (DFG), projects BA 4156/4-2, MO 850-19/2, as well as Germany’s Excellence Strategy within the Cluster of Excellence PhoenixD (EXC 2122, Project ID 390833453). The publication of this article was funded by the Open Access Fund of the Leibniz Universität Hannover.
PY - 2019
Y1 - 2019
N2 - Up to now, full tunability of waveforms was possible only in electronics, up to radio-frequencies. Here we propose a new concept of producing few-cycle terahertz (THz) pulses with widely tunable waveforms. It is based on control of the phase delay between different parts of the THz wavefront using linear diffractive optical elements. Suitable subcycle THz wavefronts can be generated via coherent excitation of nonlinear low-frequency oscillators by few-cycle optical pulses. Using this approach it is possible to shape the electric field rather than the slow pulse envelope, obtaining, for instance, rectangular or triangular waveforms in the THz range. The method is upscalable to the optical range if the attosecond pump pulses are used.
AB - Up to now, full tunability of waveforms was possible only in electronics, up to radio-frequencies. Here we propose a new concept of producing few-cycle terahertz (THz) pulses with widely tunable waveforms. It is based on control of the phase delay between different parts of the THz wavefront using linear diffractive optical elements. Suitable subcycle THz wavefronts can be generated via coherent excitation of nonlinear low-frequency oscillators by few-cycle optical pulses. Using this approach it is possible to shape the electric field rather than the slow pulse envelope, obtaining, for instance, rectangular or triangular waveforms in the THz range. The method is upscalable to the optical range if the attosecond pump pulses are used.
UR - http://www.scopus.com/inward/record.url?scp=85065770611&partnerID=8YFLogxK
U2 - 10.1038/s41598-019-43852-w
DO - 10.1038/s41598-019-43852-w
M3 - Article
C2 - 31092890
AN - SCOPUS:85065770611
VL - 9
JO - Scientific Reports
JF - Scientific Reports
SN - 2045-2322
IS - 1
M1 - 7444
ER -