Communication: SHG-detected circular dichroism imaging using orthogonal phase-locked laser pulses

Jeremy W. Jarrett, Xiaoying Liu, Paul F. Nealey, Richard A. Vaia, Giulio Cerullo, Kenneth L. Knappenberger

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

We demonstrate a novel method for second harmonic generation-detected circular dichroism (CD) imaging based on the use of phase-locked, temporally delayed femtosecond laser pulses. The polarization state of the fundamental wave was controllably changed over 2π rad by using a birefringent delay line, which provided attosecond inter-pulse delays for orthogonal phase-locked replicas; the achievable phase stability was 14 as. By introducing either a positive or negative delay of ∼667 as, we induced a ±π/2 phase shift between the orthogonally polarized pulses, resulting in left circularly polarized or right circularly polarized light. CD imaging performance using the pulse sequence was compared to results obtained for plasmonic nanoantennas using a rotating quarter-wave plate. The pulse sequence is expected to simplify polarization-resolved optical imaging by reducing experimental artifacts and decreasing image acquisition times. This method can be easily extended to other CD spectroscopy measurements.

Original languageEnglish (US)
Article number151101
JournalJournal of Chemical Physics
Volume142
Issue number15
DOIs
StatePublished - Apr 21 2015

Fingerprint

dichroism
Laser pulses
communication
Dichroism
Light polarization
Imaging techniques
Communication
pulses
Circular dichroism spectroscopy
lasers
Phase stability
Image acquisition
Electric delay lines
Harmonic generation
Ultrashort pulses
Phase shift
optical polarization
Polarization
delay lines
replicas

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

Cite this

Jarrett, Jeremy W. ; Liu, Xiaoying ; Nealey, Paul F. ; Vaia, Richard A. ; Cerullo, Giulio ; Knappenberger, Kenneth L. / Communication : SHG-detected circular dichroism imaging using orthogonal phase-locked laser pulses. In: Journal of Chemical Physics. 2015 ; Vol. 142, No. 15.
@article{f8aff4f0e2d243a9823c4598c45ca658,
title = "Communication: SHG-detected circular dichroism imaging using orthogonal phase-locked laser pulses",
abstract = "We demonstrate a novel method for second harmonic generation-detected circular dichroism (CD) imaging based on the use of phase-locked, temporally delayed femtosecond laser pulses. The polarization state of the fundamental wave was controllably changed over 2π rad by using a birefringent delay line, which provided attosecond inter-pulse delays for orthogonal phase-locked replicas; the achievable phase stability was 14 as. By introducing either a positive or negative delay of ∼667 as, we induced a ±π/2 phase shift between the orthogonally polarized pulses, resulting in left circularly polarized or right circularly polarized light. CD imaging performance using the pulse sequence was compared to results obtained for plasmonic nanoantennas using a rotating quarter-wave plate. The pulse sequence is expected to simplify polarization-resolved optical imaging by reducing experimental artifacts and decreasing image acquisition times. This method can be easily extended to other CD spectroscopy measurements.",
author = "Jarrett, {Jeremy W.} and Xiaoying Liu and Nealey, {Paul F.} and Vaia, {Richard A.} and Giulio Cerullo and Knappenberger, {Kenneth L.}",
year = "2015",
month = "4",
day = "21",
doi = "10.1063/1.4918972",
language = "English (US)",
volume = "142",
journal = "Journal of Chemical Physics",
issn = "0021-9606",
publisher = "American Institute of Physics Publising LLC",
number = "15",

}

Communication : SHG-detected circular dichroism imaging using orthogonal phase-locked laser pulses. / Jarrett, Jeremy W.; Liu, Xiaoying; Nealey, Paul F.; Vaia, Richard A.; Cerullo, Giulio; Knappenberger, Kenneth L.

In: Journal of Chemical Physics, Vol. 142, No. 15, 151101, 21.04.2015.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Communication

T2 - SHG-detected circular dichroism imaging using orthogonal phase-locked laser pulses

AU - Jarrett, Jeremy W.

AU - Liu, Xiaoying

AU - Nealey, Paul F.

AU - Vaia, Richard A.

AU - Cerullo, Giulio

AU - Knappenberger, Kenneth L.

PY - 2015/4/21

Y1 - 2015/4/21

N2 - We demonstrate a novel method for second harmonic generation-detected circular dichroism (CD) imaging based on the use of phase-locked, temporally delayed femtosecond laser pulses. The polarization state of the fundamental wave was controllably changed over 2π rad by using a birefringent delay line, which provided attosecond inter-pulse delays for orthogonal phase-locked replicas; the achievable phase stability was 14 as. By introducing either a positive or negative delay of ∼667 as, we induced a ±π/2 phase shift between the orthogonally polarized pulses, resulting in left circularly polarized or right circularly polarized light. CD imaging performance using the pulse sequence was compared to results obtained for plasmonic nanoantennas using a rotating quarter-wave plate. The pulse sequence is expected to simplify polarization-resolved optical imaging by reducing experimental artifacts and decreasing image acquisition times. This method can be easily extended to other CD spectroscopy measurements.

AB - We demonstrate a novel method for second harmonic generation-detected circular dichroism (CD) imaging based on the use of phase-locked, temporally delayed femtosecond laser pulses. The polarization state of the fundamental wave was controllably changed over 2π rad by using a birefringent delay line, which provided attosecond inter-pulse delays for orthogonal phase-locked replicas; the achievable phase stability was 14 as. By introducing either a positive or negative delay of ∼667 as, we induced a ±π/2 phase shift between the orthogonally polarized pulses, resulting in left circularly polarized or right circularly polarized light. CD imaging performance using the pulse sequence was compared to results obtained for plasmonic nanoantennas using a rotating quarter-wave plate. The pulse sequence is expected to simplify polarization-resolved optical imaging by reducing experimental artifacts and decreasing image acquisition times. This method can be easily extended to other CD spectroscopy measurements.

UR - http://www.scopus.com/inward/record.url?scp=84928473782&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84928473782&partnerID=8YFLogxK

U2 - 10.1063/1.4918972

DO - 10.1063/1.4918972

M3 - Article

AN - SCOPUS:84928473782

VL - 142

JO - Journal of Chemical Physics

JF - Journal of Chemical Physics

SN - 0021-9606

IS - 15

M1 - 151101

ER -