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JOURNALS // Kvantovaya Elektronika // Archive

Kvantovaya Elektronika, 2019 Volume 49, Number 8, Pages 749–753 (Mi qe17099)

This article is cited in 11 papers

Lasers

Frequency and energy characteristics of a Cu – Ne laser at different durations of the leading edge of the excitation pulse

P. A. Bokhana, P. P. Gugina, Dm. È. Zakrevskiiab, M. A. Lavrukhina

a Rzhanov Institute of Semiconductor Physics, Siberian Branch of Russian Academy of Sciences, Novosibirsk
b Tomsk State University

Abstract: The lasing characteristics of a copper vapour laser in a tube with forced heating, having a length of 50 cm and a diameter of 2 cm, excited by a train of pulses are investigated. Comparative studies of the frequency and energy characteristics of the laser are performed with a leading edge duration of the excitation pulse of ~25 ns (when the capacitance discharges through a thyratron and a magnetic compression line) and ~3 and 1 ns (using circuits with a high-speed switch – kivotron). It is shown that a decrease in the leading edge duration gives rise to an increase in the optimal pulse repetition rate up to ~30 kHz, the generation efficiency up to 3.2% and the generation power per unit length over 100 W m-1. The results obtained confirm the concept of limiting the frequency and energy characteristics of a copper vapour laser due to the insufficient rate of energy input into the plasma at high prepulse electron concentrations.

Keywords: copper vapour laser, frequency and energy characteristics, duration of the excitation pulse leading edge.

Received: 01.03.2019
Revised: 12.04.2019


 English version:
Quantum Electronics, 2019, 49:8, 749–753

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