Schubert, O. and Hohenleutner, M. and Langer, F. and Urbanek, B. and Lange, C. and Huttner, U. and Golde, D. and Meier, T. and Kira, M. and Koch, S. W. and Huber, R. (2014) Sub-cycle control of terahertz high-harmonic generation by dynamical Bloch oscillations. NATURE PHOTONICS, 8 (2). pp. 119-123. ISSN 1749-4885, 1749-4893
Full text not available from this repository. (Request a copy)Abstract
Ultrafast charge transport in strongly biased semiconductors is at the heart of high-speed electronics, electro-optics and fundamental solid-state physics(1-13). Intense light pulses in the terahertz spectral range have opened fascinating vistas(14-21). Because terahertz photon energies are far below typical electronic interband resonances, a stable electromagnetic waveform may serve as a precisely adjustable bias(5,11,17,19). Novel quantum phenomena have been anticipated for terahertz amplitudes, reaching atomic field strengths(8-10). We exploit controlled (multi-)terahertz waveforms with peak fields of 72 MV cm(-1) to drive coherent interband polarization combined with dynamical Bloch oscillations in semiconducting gallium selenide. These dynamics entail the emission of phase-stable high-harmonic transients, covering the entire terahertz-to-visible spectral domain between 0.1 and 675 THz. Quantum interference of different ionization paths of accelerated charge carriers is controlled via the waveform of the driving field and explained by a quantum theory of inter- and intraband dynamics. Our results pave the way towards all-coherent terahertz-rate electronics.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | SEMICONDUCTOR SUPERLATTICE; LATTICES; FIELD; WAVE; PULSES; LIGHT; |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Experimental and Applied Physics > Chair Professor Huber > Group Rupert Huber |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 28 Nov 2019 09:20 |
| Last Modified: | 28 Nov 2019 09:20 |
| URI: | https://pred.uni-regensburg.de/id/eprint/10745 |
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