Designed for FC/PC input, these output couplers may be used with single-mode, multimode, and polarization-maintaining fibers. When installed onto the 57 ICS-series lasers or the 57 PNL-series lasers, these output couplers provide a superior-quality, collimated or focused beam that is round and free from astigmatism. {\i M}{\i\super 2} values are less than 1.2. Because the output coupler is free from heat-generating components, it achieves a pointing stability better than 1μrad/°C. Both fixed- and variable-focus versions are available.
