Laser surface fluorosensor for monitoring phytoplankton

Ian Campbell; Daniel McStay; Patricia M. Pollard; Michael R. Heath

doi:10.1117/12.273527

7 May 1997 Laser surface fluorosensor for monitoring phytoplankton

Ian Campbell, Daniel McStay, Patricia M. Pollard, Michael R. Heath

Proceedings Volume 2980, Advances in Fluorescence Sensing Technology III; (1997) https://doi.org/10.1117/12.273527
Event: BiOS '97, Part of Photonics West, 1997, San Jose, CA, United States

Abstract

A free path surface fluorosensor laser system, capable of giving a real time indication of the presence of phytoplankton at or near the sea surface, is reported. The system utilizes an Argon ion laser operating at 488 nm, the output beam of which is amplitude modulated, expanded and directed onto the water surface. The resulting phytoplankton fluorescence is collected via a simple telescope and filter arrangement and then passed to a phase sensitive detection system. Initial tests using a single phytoplankton species (Thalassiosira pseudonana) carried out in the laboratory have shown that the system is able to detect phytoplankton (500 k cells/ml) at ranges up to 15 m.

Citation Download Citation

Ian Campbell, Daniel McStay, Patricia M. Pollard, and Michael R. Heath "Laser surface fluorosensor for monitoring phytoplankton", Proc. SPIE 2980, Advances in Fluorescence Sensing Technology III, (7 May 1997); https://doi.org/10.1117/12.273527

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