Microscopic analysis of extreme nonlinear optics in semiconductor nanostructures

Golde, D.; Meier, Torsten; Koch, S. W.

doi:10.1364/josab.23.002559

Cited by 48 publications

(41 citation statements)

References 19 publications

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“…Although Coulomb interactions are not included in our treatment yet, it was shown in [41] that excitonic effects and Coulomb scattering play only one role in the weak-field regime. In the strong-field regime where the electric field inside the crystal reaches or exceeds the Coulomb potential (electric-field strength at the order of 1 V/Å), light-matter interaction has a dominant effect in the total optical response of the system, thus justifying our approach.…”

Section: Discussionmentioning

confidence: 99%

“…By declaring these terms, we can take into account both dephasing of the interband polarizations as well as scattering of intraband currents. Since analytical solutions cannot be found for the SBEs with realistic experimental parameters [41][42][43], we solve the above set of equations numerically for arbitrary input parameters and for initially unexcited systems. For simplicity, we consider only one-dimensional band structure (justification is provided in Appendix A 2).…”

Section: Theoretical Approachmentioning

confidence: 99%

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High-order harmonic generation in solids: A unifying approach

2016

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There have been several experimental reports showing high-order harmonic generation from solids, but there has been no unifying theory presented as of yet for all these experiments. Here we report on the systematic investigation of high-order harmonic generation within the semiconductor Bloch equations, taking into account multiple bands and relaxation processes phenomenologically. In addition to reproducing key experiments, we show the following: (i) Electronic excitations, direct-indirect excitation pathways, and relaxation processes are responsible for high-order harmonic generation and control using midinfrared drivers in zinc oxide. We describe an intuitive picture explaining a two-color experiment involving noninversion symmetric crystals. (ii) High-order harmonic generation can be considered as a general feature of ultrafast strong-field-driven electronic dynamics in solids. We demonstrate this statement by predicting high-order harmonic spectra of solids that have not been studied yet.

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Section: Discussionmentioning

confidence: 99%

Section: Theoretical Approachmentioning

confidence: 99%

High-order harmonic generation in solids: A unifying approach

2016

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“…A detailed analysis of the interband dynamics of semiconductor nanostructures in the extreme nonlinear optical regime can be found, e.g., in Refs. [6,10]. For strong excitation intensities where the Rabi energy ω R ≡ d 0 E 0 is not small compared to the bandgap energy, the system dynamics is dominated by so-called carrier-wave Rabi flopping [7] that leads to novel effects in the emission spectra like high-harmonic generation (HHG) and carrier-wave Mollow triplets.…”

Section: Discussion Of the Equationsmentioning

confidence: 99%

“…Due to the development of fewcycle intense laser sources [4,5], the regime of extreme nonlinear optics, i.e., the regime where the Rabi frequency is comparable to or larger than the band gap became accessible in semiconductors [6]. For such strong fields, a huge amount of novel interesting effects arises like carrier-wave Rabi flopping [7,8], HHG [9,10], and carrier-wave Mollow triplets [11] that have been predicted theoretically as well as observed experimentally.…”

Section: Introductionmentioning

confidence: 99%

Microscopic analysis of high‐harmonic generation in semiconductor nanostructures

Golde

Meier

Koch

2009

Phys. Status Solidi (c)

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A microscopic analysis of the emitted radiation of a semiconductor nanostructure after excitation with an extremely intense ultrashort laser pulse is presented. It is shown that the extreme nonlinear optical response is not sufficiently described by pure interband transitions but one has to include intraband effects as well.Numerical solutions of extended Bloch equations that include the coupled inter‐ and intraband dynamics are presented. For large excitation intensities, the intraband effects strongly modify the polarization dynamics and lead to a strong enhancement of high‐harmonic generation compared to pure interband dynamics. (© 2009 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)

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“…The THz-indcued extreme nonlinear dynamics in QWs gives new insights into the internal dynamics of excitonic QW polarization, since, in contrast to optical excitation in this regime [16], Coulomb effects remain important. Figure 1 shows the schematics of the THz-pump and optical-probe experiment.…”

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confidence: 99%

Terahertz‐induced extreme nonlinear transients in semiconductor quantum wells

Lee

Danielson

Prineas

et al. 2009

Phys. Status Solidi (c)

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We demonstrate terahertz‐induced extreme nonlinear transients in GaAs/AlGaAs quantum‐wells via terahertz‐pump and optical‐probe experiments. The light‐hole and heavy‐hole excitonic resonances exhibit strong spectral modulations that fluctuate on a subpicosecond time scale as the pump‐probe time delay varies. Microscopic many‐body calculations reveal that the experimental observations contain pronounced signatures of ponderomotive contributions, the ac‐Stark effect, and terahertz high harmonic generations. (© 2009 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)

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Microscopic analysis of extreme nonlinear optics in semiconductor nanostructures

Cited by 48 publications

References 19 publications

High-order harmonic generation in solids: A unifying approach

High-order harmonic generation in solids: A unifying approach

Microscopic analysis of high‐harmonic generation in semiconductor nanostructures

Terahertz‐induced extreme nonlinear transients in semiconductor quantum wells

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