Pigtail style collimator for 1030nm with an f=18mm aspheric lens in an 8mm OD housing with 40dB return loss, with a 1 meter long, 0.9mm OD hytrel jacketed, 6/125µm singlemode fiber terminated with a Super PC polished FC/PC connector. The collimated beam diameter will be about 4.0mm at the 1/e^2 level.
