Diffusively cooled thin-sheath high-repetition-rate TEA and TEMA lasers

Shaul Yatsiv; Amnon Gabay; Yoav Sintov

doi:10.1117/12.144624

4 May 1993 Diffusively cooled thin-sheath high-repetition-rate TEA and TEMA lasers

Shaul Yatsiv, Amnon Gabay, Yoav Sintov

Proceedings Volume 1810, 9th International Symposium on Gas Flow and Chemical Lasers; (1993) https://doi.org/10.1117/12.144624
Event: Ninth International Symposium on Gas Flow and Chemical Lasers, 1992, Heraklion, Greece

Abstract

Transverse electric atmospheric (TEA), or multi atmospheric (TEMA) lasers deliver intense short laser pulses of considerable energies. Recurrent high repetition rate pulse trains afford substantial average power levels. In a high rep-rate operation the gas flows across the cavity and is externally cooled to maintain a reasonably low temperature. The gas flow gear and heat exchanger are bulky and costly. In this work we present a repetitively pulsed TEA or TEMA laser that combines energy and peak power features in an individual pulse with the substantial average power levels of a pulse train in a thin layer of gas. Excess heat is disposed of, by conduction through the gas, to cooled enclosing walls. The gas does not flow. The method applies to vibrational transition molecular lasers in the infrared, where elevated temperatures are deleterious to the laser operation. The gist of the method draws on the law that heat conductivity in gases does not depend on their pressure. The fact lends unique operational flexibility and compactness, desirable for industrial and research purposes.

Citation Download Citation

Shaul Yatsiv, Amnon Gabay, and Yoav Sintov "Diffusively cooled thin-sheath high-repetition-rate TEA and TEMA lasers", Proc. SPIE 1810, 9th International Symposium on Gas Flow and Chemical Lasers, (4 May 1993); https://doi.org/10.1117/12.144624

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KEYWORDS

Pulsed laser operation

Electrodes

Laser energy

Microwave radiation

Chemical lasers

Continuous wave operation

Gases

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