Skip to main content

Unambigous measuring of great retardations with a modified Senarmont method

Buy Article:

$28.45 plus tax (Refund Policy)


Tiltable compensators are often used for measuring of great retardations of media with birefringence. In case false colours do appear a destruction-free measuring would not be possible with this method. That is why we present a multi-colour or multi-Senarmont-method basing on a simultaneous or sucsessive measuring of the Senarmont-angle with two or more wavelengths and a subsequent minimization calculation. Two principal advantages will result:

1. Retardations Γ > λ will be measured unambigously. 2. Samples with false colours will be also measured without any destruction and unambigously. Important condition: The difference of the measuring-wavelengths can amount to at most 10 nm. Further advantages of the multicolour-Senarmont-method (opportunities for automatic contactless and short-period measuring [minimal integration time]) will be published later.

Keywords: Polarization; birefringence; false colours; multicolour-Senarmont-method; retardation

Document Type: Original Article


Affiliations: 1: Thüringisches Institut für Textil- und Kunststoff-Forschung, 07407 Rudolstadt, Germany 2: Fraunhofer Institut für Angewandte Optik und Feinmechanik IOF, 07745 Jena, Germany

Publication date: January 1, 2003


Access Key

Free Content
Free content
New Content
New content
Open Access Content
Open access content
Subscribed Content
Subscribed content
Free Trial Content
Free trial content
Cookie Policy
Cookie Policy
ingentaconnect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more