Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

Naval C3 applications tor blue-green lasers

Not Accessible

Your library or personal account may give you access

Abstract

A window exists for propagation of electromagnetic radiation in seawater in the blue-green portion of the visible spectrum–the color of the oceans. Losses, principally absorption due to the biological content of the seawater, are still high with exponential attenuation distances of 8-50 m depending on geographic location and other factors. Multiple scattering in clouds spreads pulses both spatially and temporally. Pulse stretching reaches 100 μsec in very heavy clouds and ~20 μsec in average clouds, while spatial spreading reaches several kilometers by the time the light penetrates the ocean surface. Despite these severe losses both in clouds and wafer, recent advances in both blue-green laser transmitters and various narrowband optical receivers can establish a low data rate, pulse position modulation optical communications channel to substantial depths over wide areas of the ocean. This channel can be realized in the near term with airborne lasers and in the future with laser light from communications satellites. The far wider area coverage afforded by the satellite system could be achieved either with a small laser in the satellite or with a tow-grade mirror satellite reflecting laser light transmitted from the ground.

© 1981 Optical Society of America

PDF Article
More Like This
High power blue-green molecular lasers

E. J. Schimitschek
THD3 Conference on Lasers and Electro-Optics (CLEO:S&I) 1981

Blue-green lasers for submarine communications

Ralph E. Chatham
WM1 Conference on Lasers and Electro-Optics (CLEO:S&I) 1986

Application of Blue-green Lasers to High Data Rate Underwater Communications

Judith B. Snow and Jacob R. Longacre
ThE2 Compact Blue-Green Lasers (CBGL) 1992

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved