Resonance-domain diffractive microlens arrays

Omri Barlev, Michael A. Golub

Research output: Contribution to journalArticlepeer-review

Abstract

High-efficiency resonance-domain diffractive microlens arrays with high numerical apertures and 100% fill factor were designed, fabricated, and characterized. Fabricated arrays of eight off-axis microlenses with pitch 127 μm and numerical aperture 0.2 demonstrated diffraction-limited collimation of fiber light at 632.8 nm wavelength. Optical measurements revealed diffraction efficiency exceeding 93%, in match to numerical calculations with rigorous conical diffraction. The resonance-domain diffractive microlens arrays are highly suitable for applications in fiber optics, multispot optical tweezers, optical sensors, and spectrometry.

Original languageEnglish
Pages (from-to)5299-5306
Number of pages8
JournalApplied Optics
Volume57
Issue number19
DOIs
StatePublished - 1 Jul 2018

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