Paper
1 June 1999 Application of gray-scale LDW-glass masks for fabrication of high-efficiency DOEs
Victor Pavlovich Korolkov, Anatoly I. Malyshev, Vladislav G. Nikitin, Alexander G. Poleshchuk, Andrey A. Kharissov, Vadim V. Cherkashin, Chuck Wu
Author Affiliations +
Abstract
The perspective opportunity to fabricate gray-scale masks was given LDW-glasses (LDW--Laser Direct Writing) from Canyon Materials, Inc. LDW-glass blanks contain a large number density of coloring specks of silver in a surface glass layer. A focused laser beam is used to heat erase these coloring specks. Experiments on the influence of laser radiation on LDW-glasses was carried out using a circular laser writing system. The transmittance value from the blank of 0.1 - 5% up to 70 - 80% depending on laser beam power is obtained with the current write scheme. Results of research of LDW-glasses behavior in a wide range of laser beam scanning speeds are described. Laser pattern generation in LDW-glass including the spatial resolution is discussed. The technology of fabrication of continuous-phase diffractive elements was tested by making exemplary Fresnel lenses. Total 80% efficiency for quartz Fresnel lenses with minimal zone width of 8 micrometers was readily achieved in the preliminary experiments.
© (1999) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Victor Pavlovich Korolkov, Anatoly I. Malyshev, Vladislav G. Nikitin, Alexander G. Poleshchuk, Andrey A. Kharissov, Vadim V. Cherkashin, and Chuck Wu "Application of gray-scale LDW-glass masks for fabrication of high-efficiency DOEs", Proc. SPIE 3633, Diffractive and Holographic Technologies, Systems, and Spatial Light Modulators VI, (1 June 1999); https://doi.org/10.1117/12.349316
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Cited by 8 scholarly publications.
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KEYWORDS
Transmittance

Glasses

Photoresist materials

Manufacturing

Quartz

Global system for mobile communications

Fresnel lenses

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