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13 January 1993 Formation of optical elements of glasses by ion-exchange method and photothermo-induced crystallization
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Abstract
It is found that a volume and a refractive index are varied as a result of an ion exchange process on glasses. This effect is used to produce microlenses and relief diffraction gratings. UV exposure and a thermal treatment result in a crystalline phase growth on photoglass- ceramics and polychromatic glasses. This effect leads to volume and refractive index exchange in the exposed zone. The exposure through masks enables the formation of volume phase holograms, gradient elements, and periodic relief structures on the photosensitive glasses surface and volume. The creation of ion-diffusants or microcrystals concentration gradients leads to a sample bending. This effect was used to produce the second order surface.
© (1993) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Leonid B. Glebov, Nikolai V. Nikonorov, Gury Timofeevic Petrovsky, and Mikhail V. Kharchenko "Formation of optical elements of glasses by ion-exchange method and photothermo-induced crystallization", Proc. SPIE 1751, Miniature and Micro-Optics: Fabrication and System Applications II, (13 January 1993); https://doi.org/10.1117/12.138877
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