Pulsed microwave excitation of rare-gas halide mixtures

Frank Gekat; Hans Hermann Klingenberg

doi:10.1117/12.43617

1 April 1991 Pulsed microwave excitation of rare-gas halide mixtures

Frank Gekat, Hans Hermann Klingenberg

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.

Citation Download Citation

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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