lasers not for medical use, namely, pulsed lasers, solid state lasers, semiconductor lasers, and diode-pumped ultrafast lasers; accessories for lasers not for medical use, namely, laser media, saturable absorbers, laser mirrors, laser resonators, pump diodes, electronic control apparatus for lasers, power supplies for lasers and for laser accessories, housings for lasers and for laser accessories; optical components and elements, namely, lenses, prisms, beam splitters, planar optical elements namely optical windows, optical flats, optical wedges, Brewster plates, reticles and diffusing plates, mirrors and reflectors, mirror layers, thin semiconductor, dielectric or organic films for use with lasers and accessories for lasers, layer systems comprising optically thin semiconductor, dielectric or organic layers and substrates for reflecting, absorbing or transmitting light for use with lasers and accessories for lasers, filters, gratings, polarizers, and phase plates; optomechanical components and elements, namely, mountings and supports, stops, and shutters; semiconductors, semiconductor components and elements, namely, semiconductor layer systems comprising optically thin semiconductor layers and substrates for reflecting, absorbing or transmitting light for use with lasers and accessories for lasers