نتایج جستجو برای: optical confinement
تعداد نتایج: 284806 فیلتر نتایج به سال:
Polymers have appealing optical, biochemical, and mechanical qualities, including broadband transparency, ease of functionalization, and biocompatibility. However, their low refractive indices have precluded wavelength-scale optical confinement and nanophotonic applications in polymers. Here, we introduce a suspended polymer photonic crystal (SPPC) architecture that enables the implementation o...
We report the first observation of the simultaneous three-dimensional confinement of both a low-index particle and a high-index particle within a single-beam optical trap by using a strongly focused laser beam containing an optical vortex. Experimental and theoretical investigations of the trap stability are described. © 1999 Optical Society of America [S0740-3224(99)00904-2] OCIS codes: 140.70...
Optical waveguides having some unique characteritics can be fabricated in Lithium niobate using high energy heavy ions. High optical confinement or very thick optical waveguides can be obtained using moderate (10 cm) or even ultralow (10 cm) fluences. The method has also been applied to other crystals of photonic interest. We present a review of the recent achievements obtained. Lithium niobate...
We demonstrate the feasibility of trapping and manipulating individual macromolecules such as globular proteins (~ 5 nm in diameter) in free solution using a flow-based, microfluidic confinement method. This new method enables confinement of small nanoscale objects in free solution by utilizing a planar extensional flow created at a microchannel junction. The fluid flow based confinement method...
Bose-Einstein condensates of sodium atoms have been confined in an optical dipole trap using a single focused infrared laser beam. This eliminates the restrictions of magnetic traps for further studies of atom lasers and Bose-Einstein condensates. More than 5 3 106 condensed atoms were transferred into the optical trap. Densities of up to 3 3 1015 cm23 of Bose condensed atoms were obtained, all...
In this work, we report theoretical and experimental results on the use of Cadmium Telluride (CdTe) doped with Zinc (Zn) as core material for the development of all-optical photonic devices. We include the design of optical waveguides for strong field confinement, technological processes to grow CdTe on 6” or 8” wafers (suitable for high-volume manufacturing) as well as the fabrication and opti...
In the presence of matter, there is no fundamental limit preventing confinement of visible light even down to atomic scales. Achieving such confinement and the corresponding resonant intensity enhancement inevitably requires simultaneous control over atomic-scale details of material structures and over the optical modes that such structures support. By means of self-assembly we have obtained si...
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