Abstract

Laser devices emitting in the 2 µm wavelength region are of interest for numerous applications going from light detection and ranging (LIDAR) to biomedicine. Most common 2 µm laser emission relies upon the exploitation of radiative transitions from Ho³⁺ or Tm³⁺ ions either in bulk or thin disk crystals, or in glass fibres as host materials. In the medium to high average power regime (>10 W), glass bulk lasers cannot be considered due to their poor thermal conductivity. Yet, such laser configuration could prove of interest for short pulse laser generation if one remains in a low to medium (up to 10 W) power operation.

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