Ultraviolet Characterization of Integrating Spheres

Published

July 9, 2007

Author(s)

Ping-Shine Shaw, Zhigang Li, Uwe Arp, Keith R. Lykke

Abstract

We have studied the performance of integrating spheres in the ultraviolet (UV) with wavelengths as short as 200 nm. Two techniques were used for this study; first, the spectral throughput of an integrating sphere irradiated by a deuterium lamp was analyzed by a spectrometer. Second, a laser beam was directed into an integrating sphere and spectrally dispersed Laser Induced Fluorescence (LIF) was studied. Significant absorption and fluorescence features occur in the UV from an integrating sphere which are attributed to the contamination of the integrating sphere. We demonstrate that integrating spheres are easily contaminated by environmental pollutants such as Polycyclic Aromatic Hydrocarbons (PAH) emitted from engine exhaust. Baking of the contaminated integrating sphere can reverse some but not all of the effects caused by contaminants. The implication for using integrating spheres for UV purposes.

Citation

Applied Optics

Volume

46

Issue

22

Pub Type

Journals

Keywords

integrating sphere, laser induced fluorescence, polycyclic aromatic hydrocarbons, UV absorption

Citation

Shaw, P. , Li, Z. , Arp, U. and Lykke, K. (2007), Ultraviolet Characterization of Integrating Spheres, Applied Optics (Accessed December 15, 2025)