Lange, C. and Maag, T. and Hohenleutner, M. and Baierl, S. and Schubert, O. and Edwards, E. R. J. and Bougeard, D. and Woltersdorf, G. and Huber, R. (2014) Extremely Nonperturbative Nonlinearities in GaAs Driven by Atomically Strong Terahertz Fields in Gold Metamaterials. PHYSICAL REVIEW LETTERS, 113 (22): 227401. ISSN 0031-9007, 1079-7114
Full text not available from this repository. (Request a copy)Abstract
Terahertz near fields of gold metamaterials resonant at a frequency of 0.88 THz allow us to enter an extreme limit of nonperturbative ultrafast terahertz electronics: Fields reaching a ponderomotive energy in the keV range are exploited to drive nondestructive, quasistatic interband tunneling and impact ionization in undoped bulk GaAs, injecting electron-hole plasmas with densities in excess of 10(19) cm(-3). This process causes bright luminescence at energies up to 0.5 eV above the band gap and induces a complete switch-off of the metamaterial resonance accompanied by self-amplitude-modulation of transmitted few-cycle terahertz transients. Our results pave the way towards highly nonlinear terahertz optics and optoelectronic nanocircuitry with subpicosecond switching times.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | OPTICAL RECTIFICATION; THZ-PULSE; GENERATION; SEMICONDUCTORS; SPECTROSCOPY; EXCITATION; DYNAMICS; CRYSTAL; PHASE; |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Experimental and Applied Physics > Chair Professor Huber > Group Dominique Bougeard |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 07 Aug 2019 12:50 |
| Last Modified: | 07 Aug 2019 12:50 |
| URI: | https://pred.uni-regensburg.de/id/eprint/9187 |
Actions (login required)
 |
View Item |
