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Title: Spectroscopic setup for submicrometer-resolution mapping of low-signal absorption and luminescence using photothermal heterodyne imaging and photon-counting techniques

Abstract

A spectroscopic setup that enables one to map the absorption and photoluminescence with submicrometer spatial resolution and high sensitivity is described. Here a photothermal heterodyne imaging pump/probe technique is employed for absorption mapping, and low-signal, spatially resolved photoluminescence is recorded using photon counting. High-spatial-resolution mapping is accomplished by using high-numerical-aperture microscope objective focusing laser beams (pump and probe) into a submicrometer spot and raster-scanning sample mounted on the nanopositioning translation stage. Performance of the setup is illustrated by mapping absorption and luminescence of the hafnium oxide film with embedded hafnium nanoparticles and multilayer dielectric grating. In both cases submicrometer spatial resolution is demonstrated and possible physical mechanisms leading to image contrast on a submicrometer scale is discussed

Authors:
 [1]
  1. Univ. of Rochester, Rochester, NY (United States). Lab for Laser Energetics
Publication Date:
Research Org.:
Univ. of Rochester, Rochester, NY (United States). Lab for Laser Energetics
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA)
Contributing Org.:
Laboratory for Laser Energetics, University of Rochester
OSTI Identifier:
1515832
Report Number(s):
2018-293, 1499
Journal ID: ISSN 1559-128X; APOPAI; 2018-293, 2458, 1499
Grant/Contract Number:  
NA0003856
Resource Type:
Accepted Manuscript
Journal Name:
Applied Optics
Additional Journal Information:
Journal Volume: 58; Journal Issue: 14; Journal ID: ISSN 1559-128X
Publisher:
Optical Society of America
Country of Publication:
United States
Language:
English
Subject:
47 OTHER INSTRUMENTATION

Citation Formats

Papernov, S. Spectroscopic setup for submicrometer-resolution mapping of low-signal absorption and luminescence using photothermal heterodyne imaging and photon-counting techniques. United States: N. p., 2019. Web. doi:10.1364/AO.58.003908.
Papernov, S. Spectroscopic setup for submicrometer-resolution mapping of low-signal absorption and luminescence using photothermal heterodyne imaging and photon-counting techniques. United States. doi:10.1364/AO.58.003908.
Papernov, S. Thu . "Spectroscopic setup for submicrometer-resolution mapping of low-signal absorption and luminescence using photothermal heterodyne imaging and photon-counting techniques". United States. doi:10.1364/AO.58.003908.
@article{osti_1515832,
title = {Spectroscopic setup for submicrometer-resolution mapping of low-signal absorption and luminescence using photothermal heterodyne imaging and photon-counting techniques},
author = {Papernov, S.},
abstractNote = {A spectroscopic setup that enables one to map the absorption and photoluminescence with submicrometer spatial resolution and high sensitivity is described. Here a photothermal heterodyne imaging pump/probe technique is employed for absorption mapping, and low-signal, spatially resolved photoluminescence is recorded using photon counting. High-spatial-resolution mapping is accomplished by using high-numerical-aperture microscope objective focusing laser beams (pump and probe) into a submicrometer spot and raster-scanning sample mounted on the nanopositioning translation stage. Performance of the setup is illustrated by mapping absorption and luminescence of the hafnium oxide film with embedded hafnium nanoparticles and multilayer dielectric grating. In both cases submicrometer spatial resolution is demonstrated and possible physical mechanisms leading to image contrast on a submicrometer scale is discussed},
doi = {10.1364/AO.58.003908},
journal = {Applied Optics},
number = 14,
volume = 58,
place = {United States},
year = {2019},
month = {5}
}

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