Pulse-periodical TEA-CO2 laser with wavelength tuning and pulse energy up to 1.5 J and duration up to 100 ns

Abstract

The conditions for the formation of stable volume discharges at atmospheric pressure in CO2–laser mixtures with an increased content of carbon dioxide and providing the generation of laser radiation pulses in the form of a "giant peak" with a base duration of up to 100 nanoseconds and a radiation energy of up to 1.5 J are determined. With the help of a selective resonator, a discrete rearrangement of radiation on individual vibrational–rotational transitions in the wavelength range of 9.2–10.8 μm is realized. The operation of the TEA–CO2 laser at pulse repetition frequencies up to 50 Hz is ensured.