Progressive Self-Boosting Anapole-Enhanced Deep-Ultraviolet Third Harmonic during Few-Cycle Laser Radiation

verfasst von: Liping Shi, Andrey B. Evlyukhin, Carsten Reinhardt, Ihar Babushkin, Vladimir A. Zenin, Sven Burger, Radu Malureanu, Boris N. Chichkov, Uwe Morgner, Milutin Kovacev
Abstract: Nanoantennas made of high-index semiconductors with a strong nonlinearity and supported optical Mie-type resonances offer a promising alternative platform for nonlinear nanophotonics. In this Letter, we employ an array of amorphous silicon nanodisks with varying diameters to produce a broadband deep-ultraviolet third harmonic of a few-cycle Ti:sapphire oscillator. Ultrashort light pulses efficiently deposit their energy at the center of the disks where the electric field is strongly amplified by the anapole states. This leads to a progressive material modification in an extreme multishot (>1010 pulses) and a rather low fluence (<10-3 J/cm2) regime, drastically differing from other known mechanisms, such as nonthermal plasma annealing or thermal melting-induced recrystallization. We suggest that the material modification is due to femtosecond laser-induced excitation of dangling bonds, which leads to a gradual boosting of the third harmonic conversion efficiency and broadening of its spectral bandwidth.
Organisationseinheit(en): Institut für Quantenoptik
PhoenixD: Simulation, Fabrikation und Anwendung optischer Systeme
QuantumFrontiers
Externe Organisation(en): Hochschule Bremen
Max-Born-Institut für Nichtlineare Optik und Kurzzeitspektroskopie (MBI)
University of Southern Denmark
Konrad-Zuse-Zentrum für Informationstechnik Berlin (ZIB)
Technical University of Denmark
Typ: Artikel
Journal: ACS PHOTONICS
Band: 7
Seiten: 1655-1661
Anzahl der Seiten: 7
ISSN: 2330-4022
Publikationsdatum: 15.07.2020
Publikationsstatus: Veröffentlicht
Peer-reviewed: Ja
ASJC Scopus Sachgebiete: Elektronische, optische und magnetische Materialien, Biotechnologie, Atom- und Molekularphysik sowie Optik, Elektrotechnik und Elektronik
Elektronische Version(en): https://doi.org/10.1021/acsphotonics.0c00753 (Zugang: Geschlossen)

BibTeX

@article{1bfa50e3c0894e47909c13e8fd1d24a5,
title = "Progressive Self-Boosting Anapole-Enhanced Deep-Ultraviolet Third Harmonic during Few-Cycle Laser Radiation",
abstract = "Nanoantennas made of high-index semiconductors with a strong nonlinearity and supported optical Mie-type resonances offer a promising alternative platform for nonlinear nanophotonics. In this Letter, we employ an array of amorphous silicon nanodisks with varying diameters to produce a broadband deep-ultraviolet third harmonic of a few-cycle Ti:sapphire oscillator. Ultrashort light pulses efficiently deposit their energy at the center of the disks where the electric field is strongly amplified by the anapole states. This leads to a progressive material modification in an extreme multishot (>1010 pulses) and a rather low fluence (<10-3 J/cm2) regime, drastically differing from other known mechanisms, such as nonthermal plasma annealing or thermal melting-induced recrystallization. We suggest that the material modification is due to femtosecond laser-induced excitation of dangling bonds, which leads to a gradual boosting of the third harmonic conversion efficiency and broadening of its spectral bandwidth.",
keywords = "all-dielectric nanoantennas, anapole mode, deep-ultraviolet, few-cycle laser, silicon photonics, third harmonic generation, ultrafast nonlinear optics",
author = "Liping Shi and Evlyukhin, {Andrey B.} and Carsten Reinhardt and Ihar Babushkin and Zenin, {Vladimir A.} and Sven Burger and Radu Malureanu and Chichkov, {Boris N.} and Uwe Morgner and Milutin Kovacev",
note = "Funding Information: The authors thank funding supports from Deutsche Forschungsgemeinschaft (DFG; KO 3798/4-1) and from the German Research Foundation under Germany{\textquoteright}s Excellence Strategy EXC-2123, Germany{\textquoteright}s Excellence Strategy within the Cluster of Excellence PhoenixD (EXC 2122, Project ID 390833453) and Germany{\textquoteright}s Excellence Strategy within The Berlin Mathematics Research Center MATH+ (EXC-2046/1, Project ID 390685689), and the Lower Saxony through “Quanten und Nanometrologie” (QUANOMET, Project Nanophotonik). V.A.Z. acknowledges financial support from Villum Fonden (Grant No. 16498). The authors thank Dr. R{\'e}mi Colom from Zuse Institute Berlin for supporting numerical simulations. C.R. acknowledges the funding supports from DFG (German Research Foundation, Project ID RE3012/4-1 and RE3012/2-1).",
year = "2020",
month = jul,
day = "15",
doi = "10.1021/acsphotonics.0c00753",
language = "English",
volume = "7",
pages = "1655--1661",
journal = "ACS PHOTONICS",
issn = "2330-4022",
publisher = "American Chemical Society",
number = "7",
}