Characterization of Delivered Mid-infrared Radiation Spatial Profile by Hollow Waveguide

In this work we concentrate on the delivery of the Er:YAG (2.94 am wavelength), Tm:YAG (2.01 alpham wavelength), and Tm:YAP (1.98 alpham wavelength) radiations and especially on the characterization of the beam spatial profile during the propagation through the waveguide. The flashlamp pumped Er:YAG, TmYAG, and diode pumped Tm:YAG, and Tm:YAP laser systems generating radiation in a free-running regime were designed and constructed in our laboratory.