Holmium-doped laser materials for eye-safe solid state laser application

Woohong Kim; Steven R. Bowman; Colin Baker; Guillermo Villalobos; Brandon Shaw; Bryan Sadowski; Michael Hunt; Ishwar Aggarwal; Jasbinder Sanghera

doi:10.1117/12.2050922

9 June 2014 Holmium-doped laser materials for eye-safe solid state laser application

Woohong Kim, Steven R. Bowman, Colin Baker, Guillermo Villalobos, Brandon Shaw, Bryan Sadowski, Michael Hunt, Ishwar Aggarwal, Jasbinder Sanghera

Author Affiliations +

Proceedings Volume 9081, Laser Technology for Defense and Security X; 908105 (2014) https://doi.org/10.1117/12.2050922
Event: SPIE Defense + Security, 2014, Baltimore, MD, United States

Abstract

Trivalent holmium has 14 laser channels from 0.55 to 3.9 μm. The laser emission of most interest is the transition ⁵I₇→⁵I₈ near 2 μm because of its potential for use in eye-safe systems and medical applications. In this paper, we present our recent results in the development of Ho³⁺ doped laser materials for eye-safe solid state lasers. We report a calorimetric study of non-radiative losses in two micron pumped holmium doped laser host materials such as silica glass, yttrium aluminum garnet (YAG) crystal and Lu₂O₃ ceramics. Optical, spectral and morphological properties as well as the lasing performance from highly transparent ceramics are presented.

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Woohong Kim, Steven R. Bowman, Colin Baker, Guillermo Villalobos, Brandon Shaw, Bryan Sadowski, Michael Hunt, Ishwar Aggarwal, and Jasbinder Sanghera "Holmium-doped laser materials for eye-safe solid state laser application", Proc. SPIE 9081, Laser Technology for Defense and Security X, 908105 (9 June 2014); https://doi.org/10.1117/12.2050922

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