Accessories for Laser Diodes and Modules include achromatic retarder, adapter, alignment plate, attenuator/beamsplitter, beam deflector, C-mount adapter, cap, circlips, clamp holder, collimator holder, compression spring, counter support, cuvette holder, fiber coupler, filter cascade, focusing collimator, lens, lens turret, magnetic cage holder, micrometer holder, mirror insert, mirror assembly, optics set, prism insert, rod, rotary mount, spatial filter, X-Y translation stage, and Z-adjustment.