Optical third harmonic generation in black phosphorus

Fábio Hipólito, Thomas Garm Pedersen

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

11 Citationer (Scopus)
180 Downloads (Pure)

Abstrakt

We present a calculation of third harmonic generation (THG) for two-band systems using the length gauge that avoids unphysical divergences otherwise present in the evaluation of the third-order current density response. The calculation is applied to bulk and monolayer black phosphorus (bP) using a nonorthogonal tight-binding model. Results show that the low-energy response is dominated by mixed inter-intraband processes and estimates of the magnitude of THG susceptibility are comparable to recent experimental reports for bulk bP samples.

OriginalsprogEngelsk
Artikelnummer035431
TidsskriftPhysical Review B
Vol/bind97
Udgave nummer3
Antal sider9
ISSN2469-9950
DOI
StatusUdgivet - 22 jan. 2018

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