Reflective diffraction grating and fabrication method

A reflective diffraction grating and a fabrication method are provided. The reflective diffraction grating includes a substrate, a UV-absorbing layer, a grating layer having a binary surface-relief pattern formed therein, and a conforming reflective layer. Advantageously, the UV-absorbing layer abso...

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Bibliographische Detailangaben
Hauptverfasser: Miller John Michael, Lu Patrick, Guo Xiaowei, Du Qinghong, Murley Chester, Chiu Eddie, Djie Hery
Format: Patent
Sprache:eng
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Zusammenfassung:A reflective diffraction grating and a fabrication method are provided. The reflective diffraction grating includes a substrate, a UV-absorbing layer, a grating layer having a binary surface-relief pattern formed therein, and a conforming reflective layer. Advantageously, the UV-absorbing layer absorbs light at a UV recording wavelength to minimize reflection thereof by the substrate during holographic patterning at the UV recording wavelength.