Simple model of dephasing for high-order harmonic generation in solids

Gianfranco Orlando; Tak San Ho; Shih I. Chu

doi:10.1364/JOSAB.388050

Simple model of dephasing for high-order harmonic generation in solids

Gianfranco Orlando, Tak San Ho, Shih I. Chu

Chemistry

Research output: Contribution to journal › Article › peer-review

14 Scopus citations

Abstract

We analyze high-order harmonic generation (HHG) in a disordered semiconductor within the context of the Anderson model of disorder. Employing the theoretical methods pioneered for the study of disordered metals, we show that disorder is a source of ultrafast dephasing of the HHG signal in semiconductors. Furthermore, it is shown that the dephasing effect induced by disorder on HHG spectra depends on both strength and correlation length of the disorder and very weakly on the frequency and intensity of the laser. Our results suggest that HHG has the potential to be a new spectroscopic tool for the analysis of disordered solids.

Original language	English (US)
Pages (from-to)	1540-1549
Number of pages	10
Journal	Journal of the Optical Society of America B: Optical Physics
Volume	37
Issue number	5
DOIs	https://doi.org/10.1364/JOSAB.388050
State	Published - May 2020

All Science Journal Classification (ASJC) codes

Statistical and Nonlinear Physics
Atomic and Molecular Physics, and Optics

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10.1364/JOSAB.388050

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abstract = "We analyze high-order harmonic generation (HHG) in a disordered semiconductor within the context of the Anderson model of disorder. Employing the theoretical methods pioneered for the study of disordered metals, we show that disorder is a source of ultrafast dephasing of the HHG signal in semiconductors. Furthermore, it is shown that the dephasing effect induced by disorder on HHG spectra depends on both strength and correlation length of the disorder and very weakly on the frequency and intensity of the laser. Our results suggest that HHG has the potential to be a new spectroscopic tool for the analysis of disordered solids.",

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AU - Ho, Tak San

AU - Chu, Shih I.

PY - 2020/5

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N2 - We analyze high-order harmonic generation (HHG) in a disordered semiconductor within the context of the Anderson model of disorder. Employing the theoretical methods pioneered for the study of disordered metals, we show that disorder is a source of ultrafast dephasing of the HHG signal in semiconductors. Furthermore, it is shown that the dephasing effect induced by disorder on HHG spectra depends on both strength and correlation length of the disorder and very weakly on the frequency and intensity of the laser. Our results suggest that HHG has the potential to be a new spectroscopic tool for the analysis of disordered solids.

AB - We analyze high-order harmonic generation (HHG) in a disordered semiconductor within the context of the Anderson model of disorder. Employing the theoretical methods pioneered for the study of disordered metals, we show that disorder is a source of ultrafast dephasing of the HHG signal in semiconductors. Furthermore, it is shown that the dephasing effect induced by disorder on HHG spectra depends on both strength and correlation length of the disorder and very weakly on the frequency and intensity of the laser. Our results suggest that HHG has the potential to be a new spectroscopic tool for the analysis of disordered solids.

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Simple model of dephasing for high-order harmonic generation in solids

Abstract

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