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Proceedings Paper

Hybrid lidar radar receiver for underwater imaging applications
Author(s): Madhavi Seetamraju; Rajan Gurjar; Michael Squillante; Jeffrey P. Derderian
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Paper Abstract

In this work, we present research performed to improve the receiver characteristics for underwater imaging applications using the hybrid lidar-radar detection technique. We report the development of the next-generation coherent heterodyne receiver using modulation of the optical receiver's amplifier gain. Significant advantages in the receiver specifications are achieved using a large-area, high gain, low-noise silicon avalanche photodiode (APD) as the photodetector cum frequency mixer-demodulator. We demonstrate that heterodyne detection by gain modulation of APD can be used to increase the signal-to-noise ratio, detection sensitivity and bandwidth for the hybrid receiver system.

Paper Details

Date Published: 5 May 2009
PDF: 9 pages
Proc. SPIE 7306, Optics and Photonics in Global Homeland Security V and Biometric Technology for Human Identification VI, 73061Q (5 May 2009); doi: 10.1117/12.820246
Show Author Affiliations
Madhavi Seetamraju, Radiation Monitoring Devices, Inc. (United States)
Rajan Gurjar, Radiation Monitoring Devices, Inc. (United States)
Michael Squillante, Radiation Monitoring Devices, Inc. (United States)
Jeffrey P. Derderian, Dipole Engineering, Inc. (United States)


Published in SPIE Proceedings Vol. 7306:
Optics and Photonics in Global Homeland Security V and Biometric Technology for Human Identification VI
B.V.K. Vijaya Kumar; Craig S. Halvorson; Šárka O. Southern; Salil Prabhakar; Arun A. Ross, Editor(s)

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