Innovative solutions to improve laser damage thresholds of optical structures
AssigneeLawrence Livermore National Security, LLC
InventorHoang T. Nguyen
Life of this patent
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Abstract
Optical structures, including thin film designs and components with topography, are provided that achieve significantly improved laser damage thresholds and/or ultra-low-loss. These advances may be achieved by utilizing a bulk window comprising a material having a band gap that is at least 5.0 eV and a thickness. The bulk window can be configured to increase the laser induced damage threshold of the underlying optical structure.
Claims43
An optical device comprising:
- an optical structure comprising a grating, an interference coating, a multilayer thin film stack, a reflector, or a meta surface structure;
- and
- a bulk window disposed over the optical structure, the bulk window comprising a material having a band gap that is at least 5.0 eV and a thickness, the bulk window configured to increase the laser induced damage threshold of the underlying optical structure.
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A method of fabricating an optical device, the method comprising:
- providing an optical structure comprising a grating, an interference coating, a multilayer thin film stack, a reflector, or a meta surface structure;
- and
- disposing a bulk window over the optical structure, the bulk window comprising a material having a band gap that is at least 5.0 eV and a thickness, the bulk window configured to increase the laser induced damage threshold of the underlying optical structure.
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Dependencies are inferred from the claim text.