Underwater spatially, spectrally, and temporally resolved optical monitoring of aquatic fauna

A continuous-wave (CW) Scheimpflug underwater multi-spectral lidar system was constructed to monitor aquatic fauna with spatial, spectral, and temporal resolution. Utilizing a 1 W 414 nm diode laser and a detection set-up with a reflective grating, measurements of shrimp pleopod movements at fixed r...

Full description

Saved in:

Bibliographic Details
Published in:	Optics express 2020-01, Vol.28 (2), p.2600-2610
Main Authors:	Duan, Z, Yuan, Y, Lu, J C, Wang, J L, Li, Y, Svanberg, S, Zhao, G Y
Format:	Article
Language:	eng
Subjects:	Atom and Molecular Physics and Optics Atom- och molekylfysik och optik Biologi Biological Sciences Fysik Natural Sciences Naturvetenskap Physical Sciences Zoologi Zoology
Online Access:	Get full text
Tags:	Add Tag No Tags, Be the first to tag this record!

Description
Summary:	A continuous-wave (CW) Scheimpflug underwater multi-spectral lidar system was constructed to monitor aquatic fauna with spatial, spectral, and temporal resolution. Utilizing a 1 W 414 nm diode laser and a detection set-up with a reflective grating, measurements of shrimp pleopod movements at fixed range, and the swimming of small fish trapped in a clear tube were performed in a 5 m ×0.6 m ×0.6 m water tank. The spatial resolution is about 5 mm, the spectral resolution is 10 nm (from 400 nm to 700 nm), and with proper binning of the CCD, a read-out repetition rate up to 150 Hz can be reached. The experimental results demonstrate that the underwater Scheimpflug lidar system has great potential for detailed monitoring of the small aquatic fauna in oceanic environments.
ISSN:	1094-4087 1094-4087