Abstract
We demonstrated the efficient guided laser action in a diode-pumped YAG/Tm:YAG/YAG ceramic planar waveguide fabricated by nonaqueous tape casting and solid-state reactive sintering technology for the first time, to the best of our knowledge. In the experiment, a maximum output power of 173 mW at a center wavelength of 2013.76 nm was obtained under an incident pump power of 10.3 W, corresponding to a slope efficiency of 3.0%. The beam quality M2=1.5 in a horizontal direction was measured at the highest output power.
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