Non-perturbative terahertz high-harmonic generation in the three-dimensional Dirac semimetal Cd3As2
@article{Kovalev2019NonperturbativeTH, title={Non-perturbative terahertz high-harmonic generation in the three-dimensional Dirac semimetal Cd3As2}, author={Sergey Kovalev and Renato M. A. Dantas and Semyon Germanskiy and Jan-Christoph Deinert and Bertram Green and Igor E. Ilyakov and Nilesh Awari and Min Chen and Mohammed Bawatna and Jiwei Ling and Faxian Xiu and Paul H. M. van Loosdrecht and Piotr Sur{\'o}wka and Takashi Oka and Zhe Wang}, journal={Nature Communications}, year={2019}, volume={11} }
Harmonic generation is a general characteristic of driven nonlinear systems, and serves as an efficient tool for investigating the fundamental principles that govern the ultrafast nonlinear dynamics. Here, we report on terahertz-field driven high-harmonic generation in the three-dimensional Dirac semimetal Cd3As2 at room temperature. Excited by linearly-polarized multi-cycle terahertz pulses, the third-, fifth-, and seventh-order harmonic generation is very efficient and detected via time…
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References
SHOWING 1-10 OF 57 REFERENCES
Efficient Terahertz Harmonic Generation with Coherent Acceleration of Electrons in the Dirac Semimetal Cd_{3}As_{2}.
- PhysicsPhysical review letters
- 2020
The authors' time-resolved terahertz spectroscopy and calculations clarify the microscopic mechanism of the nonlinearity originating in the coherent acceleration of Dirac electrons in momentum space and pave the way toward novel devices for high-speed electronics and photonics based on topological semimetals.
Snapshots of non-equilibrium Dirac carrier distributions in graphene.
- PhysicsNature materials
- 2013
Time- and angle-resolved photoemission spectroscopy with femtosecond extreme-ultraviolet pulses are used to directly probe the non-equilibrium response of Dirac electrons near the K-point of the Brillouin zone, and no indication of carrier multiplication is found, questioning the applicability of graphene for light harvesting.
Anisotropic high-harmonic generation in bulk crystals
- Physics, Materials Science
- 2017
High-harmonic generation in a solid turns out to be sensitive to the interatomic bonding — a very useful feature that could enable the all-optical imaging of the interatomic potential. The…
Transport evidence for Fermi-arc-mediated chirality transfer in the Dirac semimetal Cd3As2
- PhysicsNature
- 2016
This work presents Shubnikov–de Haas oscillations in focused-ion-beam-prepared microstructures of Cd3As2 that are consistent with the theoretically predicted ‘Weyl orbits’, a kind of cyclotron motion that weaves together Fermi-arc and chiral bulk states.
Nonlinear optical response of graphene in time domain
- Physics
- 2010
We study nonlinear optical response of electron dynamics in graphene to an intense light pulse within the model of massless Dirac fermions. The time-dependent Dirac equation can be cast into a…
High-harmonic spectroscopy of ultrafast many-body dynamics in strongly correlated systems
- Physics
- 2018
We bring together two topics that, until now, have been the focus of intense but non-overlapping research efforts. The first concerns high-harmonic generation in solids, which occurs when an intense…
Extremely efficient terahertz high-harmonic generation in graphene by hot Dirac fermions
- PhysicsNature
- 2018
Efficient terahertz harmonic generation—challenging but important for ultrahigh-speed optoelectronic technologies—is demonstrated in graphene through a nonlinear process that could potentially be generalized to other materials.
Strong nonlinear terahertz response induced by Dirac surface states in Bi2Se3 topological insulator
- PhysicsNature Communications
- 2016
It is demonstrated that in Bi2Se3 topological insulator, an electromagnetic-induced transparency is achieved under the application of a strong terahertz electric field, and this effect is exclusively related to the presence of Dirac electron at the surface of Bi2 Se3, and opens the road towards tunable terAhertz nonlinear optical devices based on topologicalInsulator materials.
Real-time observation of interfering crystal electrons in high-harmonic generation
- PhysicsNature
- 2015
This work studies high-harmonic generation in a bulk solid directly in the time domain, and reveals a new kind of strong-field excitation in the crystal that justifies the hope for all-optical band-structure reconstruction and lays the foundation for possible quantum logic operations at optical clock rates.
Evolution of Weyl orbit and quantum Hall effect in Dirac semimetal Cd3As2
- PhysicsNature Communications
- 2017
The evolution of Shubnikov-de Haas oscillations in Dirac semimetal Cd3As2 nanoplates along with a quantum Hall state possibly arising from such Weyl orbit is reported, indicating the dominant role of surface transport.