High refractive index Fresnel lens on a fiber fabricated by nanoimprint lithography for immersion applications
| Autor: | Giuseppe Carlo Calafiore, Simone Sassolini, Stefano Cabrini, Paul Lum, Alexander Koshelev, Keiko Munechika, Frances I. Allen, Carlos Pina-Hernandez, Ed Wong, Scott Dhuey |
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| Rok vydání: | 2016 |
| Předmět: |
Diffraction
Physics - Instrumentation and Detectors Materials science Optical fiber FOS: Physical sciences 02 engineering and technology 01 natural sciences Nanoimprint lithography law.invention 010309 optics Optics law 0103 physical sciences Fiber High-refractive-index polymer business.industry Fresnel lens Instrumentation and Detectors (physics.ins-det) 021001 nanoscience & nanotechnology Atomic and Molecular Physics and Optics Lens (optics) 0210 nano-technology business Refractive index Physics - Optics Optics (physics.optics) |
| DOI: | 10.48550/arxiv.1606.02322 |
| Popis: | In this Letter we present a Fresnel lens fabricated on the end of an optical fiber. The lens is fabricated using nanoimprint lithography of a functional high refractive index material, which is suitable for mass production. The main advantage of the presented Fresnel lens compared to a conventional fiber lens is its high refractive index (n=1.69), which enables efficient light focusing even inside other media such as water or adhesive. Measurement of the lens performance in an immersion liquid (n=1.51) shows a near diffraction limited focal spot of 810 nm in diameter at the 1/e2 intensity level for a wavelength of 660 nm. Applications of such fiber lenses include integrated optics, optical trapping and fiber probes. Comment: 4 pages , 5 figures |
| Databáze: | OpenAIRE |
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