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Okamoto Optics has been making laser optics since 1966. We provide mirrors, windows, laser rods and refractive optics for some of the world’s most powerful UV, VIS and IR lasers. We are also one of the few worldwide manufacturers of both high damage threshold substrates and thin film coatings.
Manufacturing Laser Optics: Making optics with high laser damage threshold requires a comprehensive approach to process design and control. As metrology is integral to process design we’ve invested into both R&D and special equipment to provide our customers with unique capabilities. Some of our unique capabilities derive from our ability to polish and coat large optics. Some of our special equipment includes a 3.5m polishing machine and a 2-meter electron beam coating chamber with IAD. Special metrology tools include a 700-mm aperture phase measuring interferometer, Zygo NewView 6000 white light interferometric microscope. Through our partners at Plymouth Grating Laboratory we also have access to large aperture interferometry at 1053-nm, and SEM. Our experience along with our equipment have enabled us to develop processes which both optimize laser damage threshold while also controlling film stress. This is critical to producing optics that maintain wavefront stability and film integrity in vacuum environments.
Damage Threshold: Our coatings have been tested by Osaka University Institute of Laser Engineering, Lawrence Livermore National Laboratory, Sandia National Laboratory and CEA. A summary of the damage thresholds we have satisfied to are shown in the table below.
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910 x 420 mm pulse compression MLD grating |
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