منابع مشابه
Optical near-fields & nearfield optics
Optical methods provide exceedingly powerful tools in science and technology for measuring, analyzing and manipulating, from optical microscopy and spectroscopy to the characterization of ultrafast processes by femtosecond pulses and the modification of materials by intense laser radiation. However, when it comes to applications in the nanometer-regime, the conventional optical techniques suffe...
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We describe a simple method for creating multiple optical tweezers from a single laser beam using diffractive optical elements. As a demonstration of this technique, we have implemented a 434 square array of optical tweezers—the hexadeca tweezer. Not only will diffractively generated optical tweezers facilitate many new experiments in pure and applied physics, but they also will be useful for f...
متن کاملFrom near-field optics to optical antennas
July 2011 Physics Today 47 In a prophetic letter to Albert Einstein on 22 April 1928, Irish scientist Edward Hutchinson Synge proposed a microscopic imaging method in which an optical field scattered from a tiny gold particle could be used as a radically new light source. The gold particle, Synge argued, would act as a local probe of some sample of interest, with the scattered light transmitted...
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Previous works reported that linear optics could be used to observe sub-wavelength features with a conventional optical microscope. Yet, the ability to reach a sub-200 nm resolution with a visible light remains limited. We present a novel widely-applicable method, where particle trapping is employed to overcome this limit. The combination of the light scattered by the sample and by the trapped ...
متن کاملAdaptive optics performance model for optical interferometry.
The optical interferometry community has discussed the possibility of using adaptive optics (AO) on apertures much larger than the atmospheric coherence length in order to increase the sensitivity of an interferometer, although few quantitative models have been investigated. The aim of this paper is to develop an analytic model of an AO-equipped interferometer and to use it to quantify, in rela...
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ژورنال
عنوان ژورنال: Science
سال: 2005
ISSN: 0036-8075,1095-9203
DOI: 10.1126/science.309.5739.1302a