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Coherent Back-Lasing from Atmospheric Insects

Objective

I received I received the prestigious Inaba award by the lidar community for advancing lidar entomology. Our Scheimpflug lidar can be implemented at 1% of the conventional cost and weight. It allows atmospheric observation with unpreceded sensitivity and spatiotemporal resolution. The kHz sampling rates can exceed the round-trip time of the light and reveal the modulation spectra for classifying free flying insect species over ground. The method has infinite focal depth and efficiently profiles sparse organisms in the airspace with 100000 observations per day. This tool is of key importance for tackling challenges related to pollinator diversity, agricultural pests and pesticides and malaria disease vectors. As in radar entomology, in situ lidar monitoring apparently has inevitable limitations: 1) Detection limit deteriorate with range, and far observations are biased towards larger organisms, 2) It takes several wing-beats, and therefore time, beam-width and energy to retrieve a modulation spectrum for classifying species. I propose to remove range biasing and classify insects by a microsecond flash of light. Back-lasing in air has been a dream of physicists for half a century. I now intend to capture specular reflexes from flat wing membranes. When the surface normal coincides with the lidar transect, collimated back-propagating laser light is accomplished. This flash of light is spectrally fringed and can report on the membrane thickness for target classification purpose. This project has three ambitious milestones of increasing challenge with in situ campaigns:
A) Polarimetric kHz lidar: Verification of specular flashes, investigation of range dependence, properties and likelihood.
B) Remote nanoscopy: Spectral analysis of remotely retrieved flashes for membrane thickness assessment and optimization of back-scatter resonance.
C) Farfetched flatness: I will enhance apparent surface roughness and collimated back-scatter from diffuse specimen by infrared methods

Field of science

  • /social sciences/social and economic geography/transport/transport planning/air traffic management
  • /natural sciences/biological sciences/zoology/entomology
  • /medical and health sciences/health sciences/infectious disease/malaria
  • /engineering and technology/mechanical engineering/tribology/surface roughness
  • /engineering and technology/electrical engineering, electronic engineering, information engineering/information engineering/telecommunications/radio technology/radar
  • /natural sciences/physical sciences/optics/laser physics

Call for proposal

ERC-2019-STG
See other projects for this call

Funding Scheme

ERC-STG - Starting Grant

Host institution

LUNDS UNIVERSITET
Address
Paradisgatan 5C
22100 Lund
Sweden
Activity type
Higher or Secondary Education Establishments
EU contribution
€ 1 499 487,06

Beneficiaries (1)

LUNDS UNIVERSITET
Sweden
EU contribution
€ 1 499 487,06
Address
Paradisgatan 5C
22100 Lund
Activity type
Higher or Secondary Education Establishments