High-power, high-pressure pulsed CO<sub>2</sub>lasers and their applications

Baranov, G. A.; Kuchinsky, A. A.

doi:10.1070/qe2005v035n03abeh002856

Cited by 9 publications

(1 citation statement)

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“…Due to their high peak pulse energy, high repetition rate transversely excited atmospheric (TEA) CO 2 lasers are used for scientific and industrial applications such as laser fusion [1][2][3], laser acceleration of elementary particles [4] and light detection and ranging [5]. In high repetition rate TEA CO 2 lasers a thyratron is used as the main switch, but this imposes many limitations on the circuit, such as peak volt age, cur rent and di/dt.…”

Section: Introductionmentioning

confidence: 99%

A 490 W transversely excited atmospheric CO₂spark gap laser with added H₂

Zand¹,

Koushki²,

Neshati³

et al. 2018

Laser Phys.

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In this paper we present a new design for a high pulse repetition rate transversely excited atmospheric CO 2 laser with ultraviolet preionization. A new method of fast thyristor capacitor charging and discharging by a spark gap is used. The effect of H 2 gas addition on the output and stability of a transversely excited atmospheric laser operating with a basic mixture of CO 2 , N 2 and He is investigated. The output power was increased by adding H 2 to the gas mixture ratio of CO 2 :N 2 :He:H 2 = 1:1:8:0.5 at total pressure of 850 mbar. An average power of 490 W at 110 Hz with 4.5 J per pulse was obtained. The laser efficiency was 11.2% and oxygen gas was used in the spark gap for electron capture to reduce the recovery time and increase the repetition rate.

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