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Journal articles
High-efficiency subwavelength diffractive element patterned in a high-refractive-index material for 633 nm
Abstract : We propose the use of high-index materials for the fabrication of subwavelength diffractive components operating in the visible domain. This approach yields a reduction of fabrication constraints and an improvement of theoretical performance. A blazed grating with subwavelength binary features and with a period of 5.75 wavelengths is designed and fabricated in a TiO2 layer coated upon a glass substrate. The first-order diffraction efficiency measured with a He-Ne laser beam is 83%, which is slightly larger than that achieved theoretically by the best standard (continuous profile) blazed grating fabricated in glass with the same period.
Cited literature [9 references]
https://hal-iogs.archives-ouvertes.fr/hal-00877412
Contributor : Fatima Pereira <>
Submitted on : Monday, October 28, 2013 - 2:35:33 PM
Last modification on : Tuesday, October 6, 2020 - 4:26:40 PM
Long-term archiving on: : Friday, April 7, 2017 - 6:11:49 PM
Contributor : Fatima Pereira <>
Submitted on : Monday, October 28, 2013 - 2:35:33 PM
Last modification on : Tuesday, October 6, 2020 - 4:26:40 PM
Long-term archiving on: : Friday, April 7, 2017 - 6:11:49 PM
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15_00646.pdf
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