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Applied Optics

Applied Optics


  • Vol. 34, Iss. 33 — Nov. 20, 1995
  • pp: 7724–7730

Required energy for a laser radar system incorporating a fiber amplifier or an avalanche photodiode

Jay A. Overbeck, Michael S. Salisbury, Martin B. Mark, and Edward A. Watson  »View Author Affiliations

Applied Optics, Vol. 34, Issue 33, pp. 7724-7730 (1995)

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The transmitted energy required for an airborne laser radar system to be able to image a target at 20 km is investigated. Because direct detection is being considered, two methods of enhancing the received signal are discussed: (1) using an avalanche photodiode (APD) as the detector and (2) using a commercial fiber amplifier as a preamplifier before a photodetector. For this analysis a specified signal-to-noise ratio was used in conjunction with the radar range equation, which includes the effects of atmospheric transmission and turbulence. Theoretical analysis reveals that a system with a fiber amplifier performs nearly the same as a system incorporating an APD.

© 1995 Optical Society of America

Original Manuscript: February 24, 1995
Revised Manuscript: June 22, 1995
Published: November 20, 1995

Jay A. Overbeck, Michael S. Salisbury, Martin B. Mark, and Edward A. Watson, "Required energy for a laser radar system incorporating a fiber amplifier or an avalanche photodiode," Appl. Opt. 34, 7724-7730 (1995)

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