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Proceedings Paper

Diode-pumped Nd:YAG amplifier with 52-dB gain
Author(s): Thomas J. Kane; Emily A. P. Cheng; Bao Nguyen
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Paper Abstract

We have built a diode-pumped Nd:YAG optical amplifier with 52 dB small-signal gain and 1.125 Watts cw extractable power as gain approaches 0 dB. The amplifier is compact (15 cm X 10 cm X 5 cm). Two 2-Watt laser diodes provide the pump power for the amplifier. Gain is at the wavelength of 1.064 micrometers . We have modulated the output of an Nd:YAG diode-pumped cw oscillator with a waveguide modulator and amplified the modulated output. With an M equals 4 PPM modulation, the transmitted pulse power was 1.8 Watts increasing to 6.5 Watts at M equals 64. A greater increase would be possible if the modulator had a better contrast ratio. For pulse rates greater than 200 kHz inter-symbol interference was not a problem.

Paper Details

Date Published: 20 April 1995
PDF: 12 pages
Proc. SPIE 2381, Free-Space Laser Communication Technologies VII, (20 April 1995); doi: 10.1117/12.207410
Show Author Affiliations
Thomas J. Kane, Lightwave Electronics Corp. (United States)
Emily A. P. Cheng, Lightwave Electronics Corp. (United States)
Bao Nguyen, Lightwave Electronics Corp. (United States)

Published in SPIE Proceedings Vol. 2381:
Free-Space Laser Communication Technologies VII
G. Stephen Mecherle, Editor(s)

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