Two-color two-dimensional terahertz spectroscopy: A new approach for exploring even-order nonlinearities in the nonperturbative regime
作者： Klaus Reimann , Michael Woerner , Ahmed Ghalgaoui , Thomas Elsaesser
DOI: 10.1063/5.0047700
关键词:
摘要: Nonlinear two-dimensional terahertz (2D-THz) spectroscopy at frequencies of the emitted THz signal different from driving allows for exploring regime (off-)resonant even-order nonlinearities in condensed matter. To demonstrate potential this method, we study two phenomena nonlinear response bulk GaAs: (i) The to a pair femtosecond near-infrared pulses unravels novel fourth- and sixth-order contributions involving interband shift currents, Raman-like excitations transverse-optical phonon intervalence-band coherences. (ii) Transient tunneling electrons driven by ultrashort mid-infrared can be effectively controlled low-frequency field with amplitudes below 50 kV/cm. controls electron-hole separation modifying decoherence irreversibility carrier generation.
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sci-hub.st 参考文章(27)
R. Huber, F. Tauser, A. Brodschelm, M. Bichler, G. Abstreiter, A. Leitenstorfer, How many-particle interactions develop after ultrafast excitation of an electron–hole plasma Nature. ,vol. 414, pp. 286- 289 ,(2001) , 10.1038/35104522
F. Junginger, B. Mayer, C. Schmidt, O. Schubert, S. Mährlein, A. Leitenstorfer, R. Huber, A. Pashkin, Nonperturbative interband response of a bulk InSb semiconductor driven off resonantly by terahertz electromagnetic few-cycle pulses. Physical Review Letters. ,vol. 109, pp. 147403- ,(2012) , 10.1103/PHYSREVLETT.109.147403
A.O. Caldeira, A.J. Leggett, Path integral approach to quantum Brownian motion Physica A: Statistical Mechanics and its Applications. ,vol. 121, pp. 587- 616 ,(1983) , 10.1016/0378-4371(83)90013-4
W. Kuehn, K. Reimann, M. Woerner, T. Elsaesser, Phase-resolved two-dimensional spectroscopy based on collinear n-wave mixing in the ultrafast time domain. Journal of Chemical Physics. ,vol. 130, pp. 164503- 164503 ,(2009) , 10.1063/1.3120766
Q. Wu, X.‐C. Zhang, Free‐space electro‐optic sampling of terahertz beams Applied Physics Letters. ,vol. 67, pp. 3523- 3525 ,(1995) , 10.1063/1.114909
C. Lange, T. Maag, M. Hohenleutner, S. Baierl, O. Schubert, E. R. J. Edwards, D. Bougeard, G. Woltersdorf, R. Huber, Extremely Nonperturbative Nonlinearities in GaAs Driven by Atomically Strong Terahertz Fields in Gold Metamaterials. Physical Review Letters. ,vol. 113, pp. 227401- 227401 ,(2014) , 10.1103/PHYSREVLETT.113.227401
Q. Wu, X.-C. Zhang, Free-space electro-optics sampling of mid-infrared pulses Applied Physics Letters. ,vol. 71, pp. 1285- 1286 ,(1997) , 10.1063/1.119873
W. Kuehn, K. Reimann, M. Woerner, T. Elsaesser, R. Hey, U. Schade, Strong Correlation of Electronic and Lattice Excitations in GaAs / AlGaAs Semiconductor Quantum Wells Revealed by Two-Dimensional Terahertz Spectroscopy Physical Review Letters. ,vol. 107, pp. 067401- ,(2011) , 10.1103/PHYSREVLETT.107.067401
K. Reimann, R. P. Smith, A. M. Weiner, T. Elsaesser, M. Woerner, Direct field-resolved detection of terahertz transients with amplitudes of megavolts per centimeter. Optics Letters. ,vol. 28, pp. 471- 473 ,(2003) , 10.1364/OL.28.000471
Ralph von Baltz, Wolfgang Kraut, Theory of the bulk photovoltaic effect in pure crystals Physical Review B. ,vol. 23, pp. 5590- 5596 ,(1981) , 10.1103/PHYSREVB.23.5590