English
 
Help Privacy Policy Disclaimer
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT
  Ultrafast sub-100 fs all-optical modulation and efficient third-harmonic generation in Weyl semimetal Niobium Phosphide thin films

Tilmann, B., Pandeya, A. K., Grinblat, G., Menezes, L. d. S., Li, Y., Shekhar, C., et al. (2022). Ultrafast sub-100 fs all-optical modulation and efficient third-harmonic generation in Weyl semimetal Niobium Phosphide thin films. Advanced Materials, 34(15): 2106733. doi:10.1002/adma.202106733.

Item is

Basic

show hide
Genre: Journal Article

Files

show Files
hide Files
:
AdvancedMaterials-2022-Tilmann.pdf (Publisher version), 2MB
Name:
AdvancedMaterials-2022-Tilmann.pdf
Description:
-
Visibility:
Public
MIME-Type / Checksum:
application/pdf / [MD5]
Technical Metadata:
Copyright Date:
2022
Copyright Info:
The Authors

Locators

show
hide
Locator:
https://doi.org/10.1002/adma.202106733 (Publisher version)
Description:
-

Creators

show
hide
 Creators:
Tilmann, Benjamin1, Author
Pandeya, Avanindra Kumar2, Author              
Grinblat, Gustavo1, Author
Menezes, Leonardo de S.1, Author
Li, Yi1, Author
Shekhar, Chandra1, Author
Felser, Claudia1, Author
Parkin, Stuart S. P.2, Author              
Bedoya-Pinto, Amilcar2, Author              
Maier, Stefan A.1, Author
Affiliations:
1external, ou_persistent22              
2Nano-Systems from Ions, Spins and Electrons, Max Planck Institute of Microstructure Physics, Max Planck Society, ou_3287476              

Content

show
hide
Free keywords: 3RD HARMONIC-GENERATION; INDIUM TIN OXIDE; NONLINEARITYChemistry; Science & Technology - Other Topics; Materials Science; Physics; nonlinear optics; pump-probe spectroscopy; thin films; ultrafast optics; Weyl semimetals;
 Abstract: Since their experimental discovery in 2015, Weyl semimetals have generated a large amount of attention due their intriguing physical properties that arise from their linear electron dispersion relation and topological surface states. In particular, in the field of nonlinear (NL) optics and light harvesting, Weyl semimetals have shown outstanding performances and achieved record NL conversion coefficients. In this context, the first steps toward Weyl semimetal nanophotonics are performed here by thoroughly characterizing the linear and NL optical behavior of epitaxially grown niobium phosphide (NbP) thin films, covering the visible to the near-infrared regime of the electromagnetic spectrum. Despite the measured high linear absorption, third-harmonic generation studies demonstrate high conversion efficiencies up to 10−4% that can be attributed to the topological electron states at the surface of the material. Furthermore, nondegenerate pump–probe measurements with sub-10 fs pulses reveal a maximum modulation depth of ≈1%, completely decaying within 100 fs and therefore suggesting the possibility of developing all-optical switching devices based on NbP. Altogether, this work reveals the promising NL optical properties of Weyl semimetal thin films, which outperform bulk crystals of the same material, laying the grounds for nanoscale applications, enabled by top-down nanostructuring, such as light-harvesting, on-chip frequency conversion, and all-optical processing.

Details

show
hide
Language(s): eng - English
 Dates: 2022-02-162022-04-14
 Publication Status: Published in print
 Pages: 8
 Publishing info: -
 Table of Contents: -
 Rev. Type: -
 Identifiers: ISI: 000763598000001
DOI: 10.1002/adma.202106733
 Degree: -

Event

show

Legal Case

show

Project information

show

Source 1

show
hide
Title: Advanced Materials
  Other : Adv. Mater.
Source Genre: Journal
 Creator(s):
Affiliations:
Publ. Info: Weinheim : Wiley-VCH
Pages: - Volume / Issue: 34 (15) Sequence Number: 2106733 Start / End Page: - Identifier: ISSN: 0935-9648
CoNE: https://pure.mpg.de/cone/journals/resource/954925570855