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University Lecturer Nina Reistad MSc, PhD

Nina Reistad

Senior lecturer

University Lecturer Nina Reistad MSc, PhD

Remote Nanoscopy with Infrared Elastic Hyperspectral Lidar

Author

  • Lauro Müller
  • Meng Li
  • Hampus Månefjord
  • Jacobo Salvador
  • Nina Reistad
  • Julio Hernandez
  • Carsten Kirkeby
  • Anna Runemark
  • Mikkel Brydegaard

Summary, in English

Monitoring insects of different species to understand the factors affecting their diversity and decline is a major challenge. Laser remote sensing and spectroscopy offer promising novel solutions to this. Coherent scattering from thin wing membranes also known as wing interference patterns (WIPs) have recently been demonstrated to be species specific. The colors of WIPs arise due to unique fringy spectra, which can be retrieved over long distances. To demonstrate this, a new concept of infrared (950–1650 nm) hyperspectral lidar with 64 spectral bands based on a supercontinuum light source using ray-tracing and 3D printing is developed. A lidar with an unprecedented number of spectral channels, high signal-to-noise ratio, and spatio-temporal resolution enabling detection of free-flying insects and their wingbeats. As proof of principle, coherent scatter from a damselfly wing at 87 m distance without averaging (4 ms recording) is retrieved. The fringed signal properties are used to determine an effective wing membrane thickness of 1412 nm with ±4 nm precision matching laboratory recordings of the same wing. Similar signals from free flying insects (2 ms recording) are later recorded. The accuracy and the method's potential are discussed to discriminate species by capturing coherent features from free-flying insects.

Department/s

  • LU Profile Area: Light and Materials
  • Combustion Physics
  • LTH Profile Area: Photon Science and Technology
  • LTH Profile Area: Engineering Health
  • Centre for Environmental and Climate Science (CEC)
  • Atomic Physics
  • Biodiversity
  • CAnMove - Centre for Animal Movement Research
  • LTH Profile Area: The Energy Transition

Publishing year

2023

Language

English

Publication/Series

Advanced Science

Volume

10

Issue

15

Document type

Journal article

Publisher

John Wiley & Sons Inc.

Topic

  • Atom and Molecular Physics and Optics

Keywords

  • biophotonics
  • hyperspectral imaging
  • infrared spectroscopy
  • insects
  • lidar
  • supercontiuum
  • thin film physics

Status

Published

Research group

  • CAnMove - Centre for Animal Movement Research

ISBN/ISSN/Other

  • ISSN: 2198-3844