Paper
1 April 1991 Pulsed microwave excitation of rare-gas halide mixtures
Frank Gekat, Hans Hermann Klingenberg
Author Affiliations +
Proceedings Volume 1411, Pulse Power for Lasers III; (1991) https://doi.org/10.1117/12.43617
Event: Optics, Electro-Optics, and Laser Applications in Science and Engineering, 1991, Los Angeles, CA, United States
Abstract
To investigate the excitation technique of high pressure gas lasers by high power microwave discharges, a WR-650 waveguide circuit was assembled. The pulsed microwave source was a magnetron transmitter with a frequency of 1355 MHz, a nominal pulsed power of 2.5 MW and a pulse length of 4 microsecond(s) . The pulse repetition frequency was 10 Hz. A double ridge waveguide coupling structure was designed. The results from these experiments have shown the need for a high power broadband modulateable microwave source to achieve further knowledge important for the design of compact, high power microwave excited lasers. For these purposes, a former radar transmitter, based on an amplifier chain terminated by a klystron, was modified. The transmitter has a center frequency of 1400 MHz with an instantaneous bandwidth of 100 MHz, a pulsed power of 10 MW, a maximum pulse length of 6 microsecond(s) and a maximum repetition frequency of 450 Hz. The amplifier chain is driven by a dielectric resonance oscillator which is pulse modulated by very fast pin diodes. This design allows the generation of multiple pulses within the 6 microsecond(s) time window with microwave pulse rise times of the order of ten's of nanoseconds. The results obtained with this equipment will be presented.
© (1991) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Frank Gekat and Hans Hermann Klingenberg "Pulsed microwave excitation of rare-gas halide mixtures", Proc. SPIE 1411, Pulse Power for Lasers III, (1 April 1991); https://doi.org/10.1117/12.43617
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KEYWORDS
Microwave radiation

Transmitters

Pulsed laser operation

High power microwaves

Waveguides

Gas lasers

Modulation

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