集成波导探头用于检测从弱散射介质背向散射光的效率。

Efficiency of integrated waveguide probes for the detection of light backscattered from weakly scattering media.

作者信息

Ismail Nur, Civitci Fehmi, Wörhoff Kerstin, de Ridder René M, Pollnau Markus, Driessen Alfred

机构信息

Integrated Optical MicroSystems Group, MESA+ Institute for Nanotechnology, University of Twente, P.O. Box 217, 7500 AE Enschede, The Netherlands.

出版信息

Appl Opt. 2011 Feb 20;50(6):935-42. doi: 10.1364/AO.50.000935.

DOI:10.1364/AO.50.000935

PMID:21343974

Abstract

A semianalytical model for light collection by integrated waveguide probes is developed by extending previous models used to describe fiber probes. The efficiency of waveguide probes is compared to that of different types of fiber probes for different thicknesses of a weakly scattering sample. The simulation results show that integrated probes have a collection efficiency that is higher than that of small-core fiber probes, and, in the particular case of thin samples, also exceeds the collection efficiency of large-core highly multimode fiber probes. An integrated waveguide probe with one excitation and eight collector waveguides is fabricated and applied to excite and collect luminescence from a ruby rod. The experimental results are in good agreement with the simulation and validate the semianalytical model.

摘要

通过扩展先前用于描述光纤探头的模型，开发了一种用于集成波导探头光收集的半解析模型。针对弱散射样品的不同厚度，将波导探头的效率与不同类型光纤探头的效率进行了比较。模拟结果表明，集成探头的收集效率高于小芯光纤探头，并且在薄样品的特定情况下，也超过了大芯高多模光纤探头的收集效率。制作了一个具有一个激发波导和八个收集波导的集成波导探头，并将其应用于激发和收集红宝石棒的发光。实验结果与模拟结果吻合良好，验证了该半解析模型。