The DC-200/70-PM-Yb-ROD represents the pinnacle of active double-clad fibers. The rod/fiber is polarization-maintaining and has an effective area above 2000 μm2.
DESCRIPTION The DC-200/70-PM-Yb-ROD represents the pinnacle of active double-clad fibers. The rod/fiber is polarization-maintaining and has an effective area above 2000 μm2. The very large effective area combined with extremely high pump-absorption of up to 30 dB/m pushes the non-linear thresholds to a new regime in fiber optics. The rod is aimed at high peak-power pulsed amplifiers and has been shown to handle mega-Watt peak-power levels. The DC-200/70-PM-Yb-ROD is a rod-type fiber with an outer diameter of 1.7 mm – bridging the DPSS and fiber laser world. The large outer diameter ensures that the extremely large core will not suffer from bending loss. Moreover, the rod is coating free to facilitate thermal management in high-power setups. AIRCLAD FIBERS Airclad fibers are a class of brightness converting double clad fibers. The fibers are pumped by multimode diodes and provide lasing / amplification in a high beam quality signal core. Using the photonic crystal fiber technology, a ring of air holes efficiently confines pump-light in a pure silica multimode pump core （inner cladding）. The inner cladding has a high numerical aperture （NA） due to the large index step between the airclad and sil-ica. Within the inner cladding is a single mode ytterbium doped core. Microstructuring of the inner cladding with stress rods allows a polarized large mode field diameter core while still maintaining a superior beam quality. ADVANTAGES - Polarization maintaining - Extreme mode field diameter - Single mode - High pump absorption APPLICATIONS - Ultra high-power PM amplifiers - Ultra high-power polarized lasers - Ultra high-power Q-switched lasers The fiber is moderay polarizing with a DOP of 80-90% depending on the configuration. The fiber should be op-erated in the slow-axis.