Refractometric sensor based on whispering-gallery modes of thin capillarie.
作者： Vanessa Zamora , Antonio Díez , Miguel V. Andrés , Benito Gimeno
DOI: 10.1364/OE.15.012011
关键词: Optoelectronics 、 Refractometry 、 Step-index profile 、 Optics 、 Surface wave 、 Whispering-gallery wave 、 Materials science 、 Refractive index 、 Wavelength 、 Total internal reflection 、 Refractometer
摘要: Whispering-gallery modes resonances of submicron wall thickness capillaries exhibit very large wavelength shifts as a function the refractive index medium that fills inside. The sensitivity to changes is larger than in other optical microcavities microspheres, microdisks and microrings. outer surface where total internal reflection takes place remains always air, enabling measure values higher capillary material. fabrication with has required development specific technique. A refractometer response 390 nm per unit demonstrated. These sensors are readily compatible microfluidic systems.
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