As "eye-safe" LiDAR applications continue to proliferate, the need for high efficiency and reliable fibers capable of delivering high pulse energies and good beam quality becomes critical. Coherent offers a family of high-performance Erbium/Ytterbium doped single and double clad fibers. These fibers are optimized to achieve record efficiencies in the 1.5 ?m wavelength range while suppressing parasitic 1 ?m Amplified Spontaneous Emission (ASE). By balancing the trade-offs between efficiency, power threshold, and 1 ?m ASE, Coherent offers the highest performance Erbium/Ytterbium-doped fibers available. Our product portfolio includes fibers with a variety of core sizes, each optimized for the rigorous demands of a harsh environment and/or mobile LiDAR applications.