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Transition Metal and Rare Earth Doped II-VI Chalcogenides for Optically and Electrically Pumped Broadly Tunable Mid-IR Lasers

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Technical Report,30 Sep 2013,29 Sep 2018

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University of Alabama Birmingham United States

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AFOSR sponsored research work at University of Alabama at Birmingham enabled development of new middle-infrared chalcogenide laser materials via post-growth radiation and hot isostatic pressing enhanced thermal diffusion of laser active transition metal impurities into the polycrystalline crystal host. We report on unique process of recrystallization and effective doping of ZnS ceramics under hot isostatic pressing resulting in a large cm-scale monocrystalline domains formation and an increase of the Fe diffusion length by four orders of magnitude. In collaboration with the University of Central Florida and IPG Photonics Corporation a new breakthrough was demonstrated a first ultrafast optical parametric oscillator based on random phase matching in disordered polycrystal, ZnSe ceramic. A new kinetic Monte Carlo simulation algorithm for cation diffusion in zinc blend ZB crystals has been developed. One of difficulty is the lattice indexing for ZB crystals.

Subject Categories:

  • Lasers and Masers
  • Electricity and Magnetism

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