26 SYNTHETIC SINGLE CRYSTALS, SCINTILLATION CRYSTALS, X-RAY ANALYZER CRYSTALS, ELECTRO-OPTIC CRYSTALS, ACOUSTOOPTIC CRYSTALS, LASER CRYSTALS, SECOND HARMONIC GENERATION CRYSTALS, ELECTROOPTIC LIGHT MODULATORS, ACOUSTO-OPTIC LIGHT MODULATORS, ELECTRO-OPTIC Q-SWITCHES, ACOUSTO-OPTIC Q-SWITCHES, SECOND HARMONIC GENERATORS, LASERS AND LASER SYSTEMS, ELECTRONICALLY TUNABLE OPTICAL FILTERS, OPTICAL CORRELATORS, LASER LIGHT DEFLECTORS, LASER RECORDERS, LASER MODE LACKERS, LASER BEAM ATTENUATORS, INFRARED MICROSCOPES, OPTICAL CRYSTALS, TEMPERATURE CONTROL SYSTEMS FOR LASER HARMONIC GENERATION, SPECTROMETER CELLS AND WINDOWS, AND PRECISION OPTICAL COMPONENTS-NAMELY, POLARIZERS, LENSES, RETARDATION PLATES, BEAM SPLITTERS, MIRRORS AND GIMBAL MOUNTS