Abstract
The record value of the output energy of Fe:CdTe laser, as well as the slope and total efficiency in terms of absorbed energy of 350 mJ, 57% and 42%, respectively, were obtained at the room temperature of the active element. An Fe:CdTe single crystal was pumped by a nonchain electric discharge deuterium fluoride laser operated in the spectral range of 3.6–4.06 μm. The pump pulse full duration at half maximum was 220 ns. The output energy of the Fe:CdTe laser was limited by the development of transverse parasitic oscillations for pump spot diameters on the crystal surface of more than 11 mm. A laser with a non-selective cavity generated in the ranges of 5.5–6.0 μm and 5.3–5.5 μm at the output mirror reflectances of 53% and 21%, respectively.
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