All-optical reconstruction of k-dependent transition dipole moment by solid harmonic spectra from ultrashort laser pulses

Zhao, Yijun; Ma, Shuyan; Jiang, Shicheng; Yang, Yu-Jun; Xi-nan, Zhao; Chen, Ji-Gen

doi:10.1364/oe.27.034392

Cited by 69 publications

(19 citation statements)

References 50 publications

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“…In summary, we have shown that the full quantum dynamics driving HHG in wide band materials, such as semiconductors, can be quantitatively explained in terms of quasi-classical trajectory propagation. The physical insight offered by trajectory analysis will prove useful for optimization and design of strong field and attosecond experiments and for the development of novel diagnostic applications of HHG, such as reconstruction of the dipole moment [30]. We believe that our approach presents a versatile tool for investigating open issues in strong field solid state physics, such as the role of noise and manybody effects in strong field processes.…”

Section: Discussionmentioning

confidence: 95%

Wannier quasi-classical approach to high harmonic generation in semiconductors

Parks¹,

Ernotte²,

Thorpe³

et al. 2020

Preprint

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We develop a quasi-classical theory of high harmonic generation in semiconductors based on an interband current that has been transformed from Bloch to Wannier basis. The Wannier quasiclassical approach reveals a complete picture of the mechanisms shaping high harmonic generation, such that quantitative agreement with full quantum calculations is obtained. The intuitive picture revealed by quasi-classical wavepacket propagation will be helpful in the interpretation and design of high harmonic and attosecond experiments. Beyond that, the capacity to quantitatively model quantum dynamics with classical trajectories should prove useful for a wider spectrum of condensed matter research, including coherent control, transport theory, and strong field physics.

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Section: Discussionmentioning

confidence: 95%

Wannier quasi-classical approach to high harmonic generation in semiconductors

Parks¹,

Ernotte²,

Thorpe³

et al. 2020

Preprint

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“…Several experiments on HHG in solids reported that HHG yields above the bandgap energy are strongly linked to the joint density of states (JDOS) 11,12,16 . This result suggests that interband HHG dominates intraband HHG in energy region above the bandgap in solids, and can be utilized as a probe of TDM texture 17,18 .…”

mentioning

confidence: 87%

Visualization of two-dimensional transition dipole moment texture in momentum space using high-harmonic generation spectroscopy

et al. 2021

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Highly nonlinear optical phenomena can provide access to properties of electronic systems which are otherwise difficult to access through conventional linear optical spectroscopies. In particular, high harmonic generation (HHG) in crystalline solids is strikingly different from that in atomic gases, and it enables us to access electronic properties such as the band structure, Berry curvature, and valence electron density. Here, we show that polarization-resolved HHG measurements can be used to probe the transition dipole moment (TDM) texture in momentum space in two dimensional semiconductors. TDM is directly related to the internal structure of the electronic system and governs the optical properties. We study HHG in black phosphorus, which offers a simple two-band system, with bandgap resonant excitation. We observed a unique crystal-orientation dependence of the HHG yields and polarizations and succeeded in reconstructing the TDM texture related to the inter-atomic bonding structure. Our results demonstrate the potential of high harmonic spectroscopy for probing electronic wavefunctions in crystalline solids.

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“…This process involves the coherent reciprocating motion of the electrons controlled by the external pulse; we therefore anticipate that the real-time HHG profile can be understood in terms of the time-reversal process in such a many-body system. Furthermore, since the electrons are adiabatically accelerated within energy bands in crystalline solids, it has been recognized that HHG spectra contain information about the energy-band structure [61,[90][91][92][93][94][95][96][97][98][99][100], including the Berry curvature [101][102][103][104][105] and the momentum-dependent transition dipole moments [106][107][108]. However, these methods require numerical simulations consistent with the experiments, and they are hard to apply to strongly correlated systems.…”

Section: Introductionmentioning

confidence: 99%

Energy-band echoes: Time-reversed light emission from optically driven quasiparticle wavepackets

Imai¹,

Ono²,

Ishihara³

2022

Preprint

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The at-will control of quantum states is a primary goal of quantum science and technology. The celebrated Hahn echo exemplifies such quantum-state control based on a time-reversal process in a few-level system. Here, we propose a different echo phenomenon associated with the energy-band structure in quantum many-body systems. We show that the dynamics of quasiparticle wavepackets can be reversed by a driving electric-field pulse, yielding echoes with the time-reversed waveform of the optical excitation pulse when the quasiparticles recombine. The present echoes are observed not only in band insulators but also in correlated insulators, including a Mott insulator and a spontaneously-broken-symmetry charge-ordered insulator, in one-and higherdimensional systems, irrespective of the integrability of the models. Analytical expressions reveal the conditions under which the echoes appear, and they also indicate that the frequency of the echo pulses reflects the dispersion relation for quasiparticles such as electron-hole pairs, doublon-holon pairs, and kink-antikink pairs. These findings provide a framework for all-optical momentum-resolved spectroscopy of the quasiparticles in quantum many-body systems.

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All-optical reconstruction of k-dependent transition dipole moment by solid harmonic spectra from ultrashort laser pulses

Cited by 69 publications

References 50 publications

Wannier quasi-classical approach to high harmonic generation in semiconductors

Wannier quasi-classical approach to high harmonic generation in semiconductors

Visualization of two-dimensional transition dipole moment texture in momentum space using high-harmonic generation spectroscopy

Energy-band echoes: Time-reversed light emission from optically driven quasiparticle wavepackets

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