Passively Q-switched 5-mu m Ce3+-doped selenide glass laser using Fe:CdTe and Fe:CdSe as saturable absorbers

P Fjodorow,M P Frolov,Y V Korostelin,V I Kozlovsky,S O Leonov,Y K Skasyrsky,B I Denker,B I Galagan,S E Sverchkov,V V Koltashev,V G Plotnichenko,M V Sukhanov,A P Velmuzhov

OPTICS LETTERS（2022）

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Abstract

The first, to the best of our knowledge, mid-infrared Q-switched Ce3+-doped glass laser is demonstrated. As saturable absorbers, Fe2+:CdSe and Fe2+:CdTe are used for the first time. When Q-switched by Fe:CdSe, the laser operates in a multi-pulse regime with an individual pulse width of 110 ns, centered at lambda = 5.20 mu m. With Fe:CdTe as saturable absorber, 1-3 giant pulses of 30 ns pulse width are generated at lambda = 5.13 mu m. (C) 2022 Optica Publishing Group

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Key words

selenide glass laser,saturable absorbers,fecdse,q-switched

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