Carrier transport after ultrashort-pulse laser excitation in dielectric materials leads to 10 MV m-1 electric fields: Transient birefringence and emission of terahertz radiation

Søren Hanghøj Møller; Peter Sørensen Sneftrup; Brian Julsgaard; Peter Balling

doi:10.1103/PhysRevB.109.L140304

Carrier transport after ultrashort-pulse laser excitation in dielectric materials leads to 10 MV m-1 electric fields: Transient birefringence and emission of terahertz radiation

Søren Hanghøj Møller, Peter Sørensen Sneftrup, Brian Julsgaard, Peter Balling

Department of Physics and Astronomy

Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaper › Letter › peer-review

2 Citations (Scopus)

Abstract

Charge-carrier transport is investigated theoretically in a high-band-gap dielectric material excited by intense ultrashort laser pulses. Simulations of fused silica reveal that the photo-Dember effect causes a 107Vm-1 electric field to build up inside the material. It is shown that this electric field can induce a significant transient optical anisotropy in the dielectric, which may help reconcile earlier reports of an ultrafast onset of birefringence in highly excited fused silica. The time-dependent electric field will also lead to emission of a broadband THz pulse propagating out from and along the dielectric surface.

Original language	English
Article number	L140304
Journal	Physical Review B
Volume	109
Issue	14
Number of pages	6
ISSN	2469-9950
DOIs	https://doi.org/10.1103/PhysRevB.109.L140304
Publication status	Published - Apr 2024

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@article{d5fa56cb3f3645a69acab802a9c6152e,

title = "Carrier transport after ultrashort-pulse laser excitation in dielectric materials leads to 10 MV m-1 electric fields: Transient birefringence and emission of terahertz radiation",

abstract = "Charge-carrier transport is investigated theoretically in a high-band-gap dielectric material excited by intense ultrashort laser pulses. Simulations of fused silica reveal that the photo-Dember effect causes a 107Vm-1 electric field to build up inside the material. It is shown that this electric field can induce a significant transient optical anisotropy in the dielectric, which may help reconcile earlier reports of an ultrafast onset of birefringence in highly excited fused silica. The time-dependent electric field will also lead to emission of a broadband THz pulse propagating out from and along the dielectric surface.",

author = "M{\o}ller, \{S{\o}ren Hangh{\o}j\} and Sneftrup, \{Peter S{\o}rensen\} and Brian Julsgaard and Peter Balling",

year = "2024",

month = apr,

doi = "10.1103/PhysRevB.109.L140304",

language = "English",

volume = "109",

journal = "Physical Review B",

issn = "2469-9950",

publisher = "American Physical Society",

number = "14",

}

Carrier transport after ultrashort-pulse laser excitation in dielectric materials leads to 10 MV m-1 electric fields: Transient birefringence and emission of terahertz radiation. / Møller, Søren Hanghøj; Sneftrup, Peter Sørensen; Julsgaard, Brian et al.
In: Physical Review B, Vol. 109, No. 14, L140304, 04.2024.

Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaper › Letter › peer-review

TY - JOUR

T1 - Carrier transport after ultrashort-pulse laser excitation in dielectric materials leads to 10 MV m-1 electric fields

T2 - Transient birefringence and emission of terahertz radiation

AU - Møller, Søren Hanghøj

AU - Sneftrup, Peter Sørensen

AU - Julsgaard, Brian

AU - Balling, Peter

PY - 2024/4

Y1 - 2024/4

N2 - Charge-carrier transport is investigated theoretically in a high-band-gap dielectric material excited by intense ultrashort laser pulses. Simulations of fused silica reveal that the photo-Dember effect causes a 107Vm-1 electric field to build up inside the material. It is shown that this electric field can induce a significant transient optical anisotropy in the dielectric, which may help reconcile earlier reports of an ultrafast onset of birefringence in highly excited fused silica. The time-dependent electric field will also lead to emission of a broadband THz pulse propagating out from and along the dielectric surface.

AB - Charge-carrier transport is investigated theoretically in a high-band-gap dielectric material excited by intense ultrashort laser pulses. Simulations of fused silica reveal that the photo-Dember effect causes a 107Vm-1 electric field to build up inside the material. It is shown that this electric field can induce a significant transient optical anisotropy in the dielectric, which may help reconcile earlier reports of an ultrafast onset of birefringence in highly excited fused silica. The time-dependent electric field will also lead to emission of a broadband THz pulse propagating out from and along the dielectric surface.

UR - https://www.scopus.com/pages/publications/85190890484

U2 - 10.1103/PhysRevB.109.L140304

DO - 10.1103/PhysRevB.109.L140304

M3 - Letter

SN - 2469-9950

VL - 109

JO - Physical Review B

JF - Physical Review B

IS - 14

M1 - L140304

ER -

Carrier transport after ultrashort-pulse laser excitation in dielectric materials leads to 10 MV m-1 electric fields: Transient birefringence and emission of terahertz radiation

Abstract

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