CHARISMA: a new way for angular-resolved scattering measurements

Oliver Apel; Christian Goerling; Uwe Leinhos; Klaus R. Mann; Bernd Schaefer

doi:10.1117/12.425029

12 April 2001 CHARISMA: a new way for angular-resolved scattering measurements

Oliver Apel, Christian Goerling, Uwe Leinhos, Klaus R. Mann, Bernd Schaefer

Proceedings Volume 4347, Laser-Induced Damage in Optical Materials: 2000; (2001) https://doi.org/10.1117/12.425029
Event: Laser-Induced Damage in Optical Materials: 2000, 2000, Boulder, CO, United States

Abstract

In this paper, we present our new Coblentz Hemisphere based Angular Resolved and Integral Scattering Measurement Apparatus (CHARISMA). It is based on the combination of the well known Coblentz-Hemisphere used for integral scattering measurements and highly sensitive camera system developed at the Laser-Laboratorium Goettingen. Using CHARISMA, single- shot determination of the bidirectional reflectance distribution (BRDF) of optical samples is possible. Due to the spherical aberrations in the high-precision machined Coblentz-Hemisphere, the light scattered from a sample is not imaged onto a single spot but rather onto a stratified area. From this light distribution monitored by the camera system the angular-resolved scattering distribution can be evaluated unambiguously using a sophisticated complicated mathematical transformation.

Citation Download Citation

Oliver Apel, Christian Goerling, Uwe Leinhos, Klaus R. Mann, and Bernd Schaefer "CHARISMA: a new way for angular-resolved scattering measurements", Proc. SPIE 4347, Laser-Induced Damage in Optical Materials: 2000, (12 April 2001); https://doi.org/10.1117/12.425029

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