Abstract
We report on efficient operation of a flashlamp pumped CrEr: YSGG laser at the wavelength of 2.70 μm. A free running output pulse energy of more than 0.6 J at a slope efficiency of 0.36% has been achieved by using a specially-designed low-loss dispersive resonator. We will also report on efficient frustrated total internal reflection (FTIR) Q-switching of this laser. The wavelength of 2.70 μm is of particular interest for laser surgery because of its considerably better transmittance in fused silica fibers compared to well developed 2.79 μm CrEr: YSGG and 2.94 μm Er: YAG lasers.
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