共振域衍射微透镜阵列
Resonance-domain diffractive microlens arrays.
作者信息
Barlev Omri, Golub Michael A
出版信息
Appl Opt. 2018 Jul 1;57(19):5299-5306. doi: 10.1364/AO.57.005299.
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.
设计、制造并表征了具有高数值孔径和100%填充因子的高效共振域衍射微透镜阵列。制造的八个离轴微透镜阵列，其间距为127μm，数值孔径为0.2，在632.8nm波长下实现了光纤光的衍射极限准直。光学测量显示衍射效率超过93%，与严格锥形衍射的数值计算结果相符。共振域衍射微透镜阵列非常适合应用于光纤、多点光镊、光学传感器和光谱学领域。
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