Laboratory demonstration of a Brillouin lidar to remotely measure temperature profiles of the ocean

Andreas Rudolf; Thomas Walther

doi:10.1117/1.OE.53.5.051407

27 January 2014 Laboratory demonstration of a Brillouin lidar to remotely measure temperature profiles of the ocean

Andreas Rudolf, Thomas Walther

Author Affiliations +

Optical Engineering, Vol. 53, Issue 5, 051407 (January 2014). https://doi.org/10.1117/1.OE.53.5.051407

Abstract

We report on the successful laboratory demonstration of a real-time lidar system to remotely measure temperature profiles in water. In the near future, it is intended to be operated from a mobile platform, e.g., a helicopter or vessel, in order to precisely determine the temperature of the surface mixed layer of the ocean with high spatial resolution. The working principle relies on the active generation and detection of spontaneous Brillouin scattering. The light source consists of a frequency-doubled fiber-amplified external cavity diode laser and provides high-energy, Fourier transform–limited laser pulses in the green spectral range. The detector is based on an atomic edge filter and allows the challenging extraction of the temperature information from the Brillouin scattered light. In the lab environment, depending on the amount of averaging, water temperatures were resolved with a mean accuracy of up to 0.07°C and a spatial resolution of 1 m, proving the feasibility and the large potential of the overall system.

Citation Download Citation

Andreas Rudolf and Thomas Walther "Laboratory demonstration of a Brillouin lidar to remotely measure temperature profiles of the ocean," Optical Engineering 53(5), 051407 (27 January 2014). https://doi.org/10.1117/1.OE.53.5.051407

Published: 27 January 2014

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available