Temporal coherence properties of laser modules used in headlamps determined by a Michelson interferometer

IF 2.3 Q2 OPTICS

Advanced Optical Technologies Pub Date : 2020-11-23 DOI:10.1515/aot-2020-0039

Valerie Popp, P. Ansorg, B. Fleck, C. Neumann

引用次数: 1

Abstract

Abstract In this work, an investigation of the temporal coherence properties of radiation which is emitted by laser modules integrated in headlamps is presented. The motivation for these measurements was difficulties concerning the field of classification for laser products which function as conventional headlamps. Based on an experimental setup including a Michelson interferometer, a goniophotometer and a spectrometer, coherence lengths of 92.5 and 147.0 μm are obtained for two different laser modules. The results show that the temporal coherence of the examined radiation is appreciably higher than the temporal coherence of conventionally produced white light. Therefore, at this point in time, laser modules used in headlamps cannot be considered as customary white light sources.

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由迈克尔逊干涉仪测定的用于前照灯的激光模块的时间相干特性

摘要在这项工作中，研究了集成在前照灯中的激光模块发射的辐射的时间相干特性。这些测量的动机是与用作传统前照灯的激光产品分类领域有关的困难。基于包括迈克尔逊干涉仪、测角仪和光谱仪在内的实验装置，获得了两个不同激光模块的相干长度分别为92.5和147.0μm。结果表明，被检测辐射的时间相干性明显高于传统产生的白光的时间相性。因此，在这个时间点上，前照灯中使用的激光模块不能被视为常规的白色光源。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Advanced Optical Technologies OPTICS-

CiteScore

4.40

自引率

0.00%

发文量

期刊介绍： Advanced Optical Technologies is a strictly peer-reviewed scientific journal. The major aim of Advanced Optical Technologies is to publish recent progress in the fields of optical design, optical engineering, and optical manufacturing. Advanced Optical Technologies has a main focus on applied research and addresses scientists as well as experts in industrial research and development. Advanced Optical Technologies partners with the European Optical Society (EOS). All its 4.500+ members have free online access to the journal through their EOS member account. Topics: Optical design, Lithography, Opto-mechanical engineering, Illumination and lighting technology, Precision fabrication, Image sensor devices, Optical materials (polymer based, inorganic, crystalline/amorphous), Optical instruments in life science (biology, medicine, laboratories), Optical metrology, Optics in aerospace/defense, Simulation, interdisciplinary, Optics for astronomy, Standards, Consumer optics, Optical coatings.

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