Abstract
In this paper spontaneous Raman spectra of monoclinic single crystals of BaTeMo2O9 (BTM) along the Z axis has been characterized, and a highly efficient stimulated Raman scattering laser operating at 1178 nm has been realized based on the BTM crystal. The Raman resonator possesses a threshold of 28 MW/cm2 at 1064 nm and a maximum output pulse energy of 19.2 mJ for the first-order Stokes with an optical-to-optical conversion efficiency of 48% and a slope efficiency of 61.2%. The largest optical-to-optical conversion efficiency can reach 50.4% at a pump energy of 28.8 mJ. Our experimental results demonstrate that BTM can be used as an excellent near and mid-infrared Raman laser material.
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