Efficient Fe:CdTe laser producing 0.35 J pulses in the 5 µm spectral range

High-energy laser operation of a -doped single-crystal CdTe is demonstrated at the temperature of 77 K. Pumped with 250 µs pulses of a 4.08 µm Fe:ZnSe laser, the Fe:CdTe laser produced a record output of 0.35 J, with a slope efficiency of 44%. A further up-scaling by employing high-energy pump sourc...

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Bibliographic Details
Published in:Optics letters 2020-12, Vol.45 (24), p.6647-6650
Main Authors: Frolov, M P, Korostelin, Yu V, Kozlovsky, V I, Leonov, S O, Fjodorow, P, Skasyrsky, Ya K
Format: Article
Language:English
Subjects:
Cadmium tellurides
Lasers
Single crystals
Tunable lasers
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Summary:High-energy laser operation of a -doped single-crystal CdTe is demonstrated at the temperature of 77 K. Pumped with 250 µs pulses of a 4.08 µm Fe:ZnSe laser, the Fe:CdTe laser produced a record output of 0.35 J, with a slope efficiency of 44%. A further up-scaling by employing high-energy pump sources is feasible, thus facilitating material-processing applications. The laser was tunable from 4.86 to 5.37 µm. In a nonselective cavity, the laser's central wavelength was 5.03 µm at 77 K, and shifted to 5.23 µm at 215 K. At the later operation point, reachable using a Peltier element, the laser still produced 0.15 J of output energy with an efficiency of 22%.
ISSN:0146-9592
1539-4794
DOI:10.1364/OL.411559