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Proceedings Paper

400 MHz Traveling Wave Modulator
Author(s): Hu Demin
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Paper Abstract

A wide band laser modulator is designed on the basis of electro-optic modulation principle. A trgvelling wave mode is adopted. A piece of 3x3x80 mm3 single crystal GaAs is used as the modulating crystal. The output power from the high frequency generator'is over 250W with 50ohm output impedance in the frequency range of 30 MHz to 400 MHz. The electrical matching between the modUlator and the generator is good. The bandwidth of the modulator is measured to be 400 MHz. Intensity modulation experiments are performed with a CO2 laser. High frequency HgCdTe infrared detectors in metal dewar are measured with this system to have a time constant below 1 ns.

Paper Details

Date Published: 17 December 1979
PDF: 4 pages
Proc. SPIE 0197, Modern Utilization of Infrared Technology V, (17 December 1979); doi: 10.1117/12.957998
Show Author Affiliations
Hu Demin, North China Research Institute of Electro-Optics (China)


Published in SPIE Proceedings Vol. 0197:
Modern Utilization of Infrared Technology V
Irving J. Spiro, Editor(s)

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