A fiber-coupled, multi-bar module from DILAS (Tucson, AZ) delivers 300W through a cladding mode free QBH high-power 200-μm core diameter fiber with a low numerical aperture of 35%. The modules are packaged in up to 10-bar configurations and designed based on industry-standard conductively cooled bars, which are optically stacked and polarization-coupled. The product requires only industrial water for cooling. The modules have demonstrated a lifetime greater than 10,000 hours at a 300W CW operating condition. Custom wavelengths are available upon request. They are designed for direct diode applications as well as fiber and solid-state laser pumping.
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