Apparatus for measuring integrated light scattering of optical components over an extended range of wavelengths

1996 ◽  
Author(s):  
Stefan Gliech ◽  
Angela Duparre
Keyword(s):  
Light Scattering ◽  
Optical Components ◽  
Extended Range

scholarly journals Light scattering techniques for the characterization of optical components

2017 ◽  
Author(s):  
S. Schröder ◽  
T. Herffurth ◽  
M. Trost ◽  
T. Weigel ◽  
M. Hauptvogel ◽  
...  
Keyword(s):  
Light Scattering ◽  
Optical Components

scholarly journals Light scattering characterization of optical components for space applications

2017 ◽  
Author(s):  
S. Schröder ◽  
M. Hauptvogel ◽  
M. Trost ◽  
A. Costille ◽  
D. Penka ◽  
...  
Keyword(s):  
Light Scattering ◽  
Space Applications ◽  
Optical Components

scholarly journals Sizing Particles in Gases by an Advanced Optical Procedure

2021 ◽  
Vol 343 ◽  
pp. 10010
Author(s):  
Dan Chicea ◽  
Cristian Leca ◽  
Sorin Olaru
Keyword(s):  
Time Series ◽  
Diffusion Coefficient ◽  
Light Scattering ◽  
Scattered Light ◽  
Experimental Setup ◽  
Proof Of Concept ◽  
Experimental Conditions ◽  
Combustion Gases ◽  
Extended Range ◽  
Average Size

Several types of sensors capable of detecting fumes are commercially available. A well-established procedure for sizing particles suspended in liquid solvent is called Dynamic Light Scattering (DLS) and is based on assessing the diffusion coefficient of the particles from the fluctuations of the scattered light recorded in the scattered light intensity time series. This work highlights the difficulties encountered in an attempt to use DLS for sizing particles suspended in air and the particular, narrow experimental conditions chosen in designing and setting such a DLS experiment. The experimental setup was tested on combustion gases and the results of the preliminary experiment are presented in detail. The results stand as a proof of concept for using DLS in sizing particle in gases and in designing a sensor for fumes detection that can indicate the average size of the particles over an extended range.

Surface Characterization of High-End Optical Components using Light Scattering

2017 ◽  
Author(s):  
Sven Schröder ◽  
Marcus Trost ◽  
Tobias Herffurth ◽  
Matthias Hauptvogel ◽  
Mikhail E. Sachkov ◽  
...  
Keyword(s):  
Light Scattering ◽  
Surface Characterization ◽  
Optical Components

Light scattering of interference coatings from the IR to the EUV spectral regions

2014 ◽  
Vol 3 (1) ◽  
Author(s):  
Sven Schröder ◽  
Marcus Trost ◽  
Tobias Herffurth ◽  
Alexander von Finck ◽  
Angela Duparré
Keyword(s):  
Light Scattering ◽  
Extreme Ultraviolet ◽  
Critical Factor ◽  
Theoretical Models ◽  
Impact Factors ◽  
Valuable Insight ◽  
Properties Of Coatings ◽  
Optical Components ◽  
Deep Ultraviolet ◽  
Insight Into

AbstractLight scattering of optical components caused by residual imperfections can be a critical factor for their practical application. In particular, the scattering properties of optical interference coatings are rather complex. Yet, simple theoretical models and comparisons with experimental results provide valuable insight into the main impact factors and mechanisms. The magnitude of scattering and the dominating factors strongly depend on the wavelength of application in connection with the types of coatings used in the corresponding ranges. The paper, therefore, gives an overview of the scattering properties of coatings in different spectral regions including the visible, deep ultraviolet, and extreme ultraviolet and discusses strong in-band variations of the scattering characteristics that have been neglected so far.

Standardization of light scattering measurements

2015 ◽  
Vol 4 (5-6) ◽  
Author(s):  
Sven Schröder ◽  
Alexander von Finck ◽  
Angela Duparré
Keyword(s):  
Light Scattering ◽  
Critical Factor ◽  
Optical Systems ◽  
Crucial Importance ◽  
Component Level ◽  
Optical Components ◽  
Standard Procedures ◽  
Measurement Results ◽  
International Experts

AbstractIn every advanced optical system, light scattering caused by the imperfections of optical components sooner or later becomes an issue that needs to be addressed. Light scattering can be a critical factor for both the throughput and the imaging quality of optical systems. On a component level, the quantities to describe these effects are the scatter loss or total scattering (TS) and the scattering distribution function or angle-resolved light scattering (ARS). In the last decades, a number of instruments have been developed worldwide for the measurement of TS and ARS. However, numerous pitfalls have to be avoided to obtain objective, reliable, and reproducible measurement results. This is, in particular, true for low scatter levels of high-end optical components. Standard procedures that have to be both concise and easy to implement are thus of crucial importance for the optics community. This paper tries to give an overview on existing standards as well as an outlook on new standards that are still being developed. Special emphasis is put on ISO standards jointly developed, reviewed, and revised by the international experts in the field.

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