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Proceedings Paper

Image transmission in mid-IR using a solid state laser pumped optical parametric oscillator
Author(s): Narasimha S. Prasad; Pat Kratovil; James R. Magee
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Paper Abstract

In this paper, image transmission using a mid-wave IR (MWIR) optical transceiver based free-space data link under low visibility conditions is presented. The all-solid-state MWIR transceiver primarily consisted of a passively Q-switched, short-pulsed Nd:YAG laser pumping a periodically poled lithium niobate (PPLN) based optical parametric oscillator and a Dember effect detector. The MILES transceiver generates pulse position waveforms. The optical data link consisting of transmitter drive electronics, pulse conditioning electronics and a computer generating pulses compatible with the 2400-baud rate RS232 receiver was utilized. Data formatting and RS232 transmission and reception were achieved using a computer. Data formatting transformed an arbitrary image file format compatible with the basic operation of pump laser. Images were transmitted at a date rate of 2400 kbits/sec with 16 bits/pixel. Test images consisting of 50X40 pixels and 100X80 pixels were transmitted through free-space filled with light fog up to 120 ft. Besides optical parametric oscillators, the proposed concept can be extended to optical parametric amplifiers, Raman lasers and other nonlinear optical devices to achieve multi-functionality.

Paper Details

Date Published: 26 April 2002
PDF: 6 pages
Proc. SPIE 4635, Free-Space Laser Communication Technologies XIV, (26 April 2002); doi: 10.1117/12.464102
Show Author Affiliations
Narasimha S. Prasad, Coherent Technologies, Inc. (United States)
Pat Kratovil, Coherent Technologies, Inc. (United States)
James R. Magee, Coherent Technologies, Inc. (United States)

Published in SPIE Proceedings Vol. 4635:
Free-Space Laser Communication Technologies XIV
G. Stephen Mecherle, Editor(s)

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