Second-harmonic generation imaging of semiconductor nanowires with focused vector beams

Godofredo Bautista; Jouni Mäkitalo; Ya Chen; Veer Dhaka; Marco Grasso; Lasse Karvonen; Hua Jiang; Mikko J. Huttunen; Teppo Huhtio; Harri Lipsanen; Martti Kauranen

doi:10.1021/nl503984b

Second-harmonic generation imaging of semiconductor nanowires with focused vector beams

Godofredo Bautista^*
, Jouni Mäkitalo
, Ya Chen
, Veer Dhaka
, Marco Grasso
, Lasse Karvonen
, Hua Jiang
, Mikko J. Huttunen
, Teppo Huhtio
, Harri Lipsanen
, Martti Kauranen

^*Corresponding author for this work

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

74 Citations (Scopus)

Abstract

We use second-harmonic generation (SHG) with focused vector beams to investigate individual vertically aligned GaAs nanowires. Our results provide direct evidence that SHG from oriented nanowires is mainly driven by the longitudinal field along the nanowire growth axis. Consequently, focused radial polarization provides a superior tool to characterize such nanowires compared to linear polarization, also allowing this possibility in the native growth environment. We model our experiments by describing the SHG process for zinc-blende structure and dipolar bulk nonlinearity.

Original language	English
Pages (from-to)	1564-1569
Number of pages	6
Journal	Nano Letters
Volume	15
Issue number	3
DOIs	https://doi.org/10.1021/nl503984b
Publication status	Published - 6 Feb 2015
Publication type	A1 Journal article-refereed

Keywords

modeling
nonlinear imaging
radial polarization
Second-harmonic generation
semiconductor

Publication forum classification

Publication forum level 3

ASJC Scopus subject areas

Condensed Matter Physics
Bioengineering
General Chemistry
General Materials Science
Mechanical Engineering

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10.1021/nl503984b

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title = "Second-harmonic generation imaging of semiconductor nanowires with focused vector beams",

abstract = "We use second-harmonic generation (SHG) with focused vector beams to investigate individual vertically aligned GaAs nanowires. Our results provide direct evidence that SHG from oriented nanowires is mainly driven by the longitudinal field along the nanowire growth axis. Consequently, focused radial polarization provides a superior tool to characterize such nanowires compared to linear polarization, also allowing this possibility in the native growth environment. We model our experiments by describing the SHG process for zinc-blende structure and dipolar bulk nonlinearity.",

keywords = "modeling, nonlinear imaging, radial polarization, Second-harmonic generation, semiconductor",

author = "Godofredo Bautista and Jouni M{\"a}kitalo and Ya Chen and Veer Dhaka and Marco Grasso and Lasse Karvonen and Hua Jiang and Huttunen, \{Mikko J.\} and Teppo Huhtio and Harri Lipsanen and Martti Kauranen",

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year = "2015",

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doi = "10.1021/nl503984b",

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issn = "1530-6984",

publisher = "American Chemical Society",

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TY - JOUR

T1 - Second-harmonic generation imaging of semiconductor nanowires with focused vector beams

AU - Bautista, Godofredo

AU - Mäkitalo, Jouni

AU - Chen, Ya

AU - Dhaka, Veer

AU - Grasso, Marco

AU - Karvonen, Lasse

AU - Jiang, Hua

AU - Huttunen, Mikko J.

AU - Huhtio, Teppo

AU - Lipsanen, Harri

AU - Kauranen, Martti

N1 - AUX=fys,"Grasso, Marco" EXT="Dhaka, Veer" EXT="Huttunen, Mikko J."

PY - 2015/2/6

Y1 - 2015/2/6

N2 - We use second-harmonic generation (SHG) with focused vector beams to investigate individual vertically aligned GaAs nanowires. Our results provide direct evidence that SHG from oriented nanowires is mainly driven by the longitudinal field along the nanowire growth axis. Consequently, focused radial polarization provides a superior tool to characterize such nanowires compared to linear polarization, also allowing this possibility in the native growth environment. We model our experiments by describing the SHG process for zinc-blende structure and dipolar bulk nonlinearity.

AB - We use second-harmonic generation (SHG) with focused vector beams to investigate individual vertically aligned GaAs nanowires. Our results provide direct evidence that SHG from oriented nanowires is mainly driven by the longitudinal field along the nanowire growth axis. Consequently, focused radial polarization provides a superior tool to characterize such nanowires compared to linear polarization, also allowing this possibility in the native growth environment. We model our experiments by describing the SHG process for zinc-blende structure and dipolar bulk nonlinearity.

KW - modeling

KW - nonlinear imaging

KW - radial polarization

KW - Second-harmonic generation

KW - semiconductor

UR - https://www.scopus.com/pages/publications/84924595561

U2 - 10.1021/nl503984b

DO - 10.1021/nl503984b

M3 - Article

AN - SCOPUS:84924595561

SN - 1530-6984

VL - 15

SP - 1564

EP - 1569

JO - Nano Letters

JF - Nano Letters

IS - 3

ER -

Second-harmonic generation imaging of semiconductor nanowires with focused vector beams

Abstract

Keywords

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