Background clean-up in Brillouin microspectroscopy of scattering medium

• Published in: Optics express Vol. 22; no. 5; pp. 5410 - 5415
• Main Authors: Meng, Zhaokai, Traverso, Andrew J., Yakovlev, Vladislav V.
• Format: Journal Article
• Language: English
• Published: United States Optical Society of America 10.03.2014
• Subjects: Diagnostic Imaging - instrumentation; Diagnostic Imaging - methods; Diagnostic Imaging - statistics & numerical data; Elasticity Imaging Techniques - instrumentation; Elasticity Imaging Techniques - methods; Elasticity Imaging Techniques - statistics & numerical data; Humans; Lasers, Solid-State; Light; Optical Devices; Optical Phenomena; Scattering, Radiation; Spectrum Analysis - instrumentation; Spectrum Analysis - methods; Spectrum Analysis - statistics & numerical data; User-Computer Interface
• ISSN: 1094-4087; 1094-4087
• DOI: 10.1364/OE.22.005410

Brillouin spectroscopy is an emerging tool for microscopic optical imaging as it allows for non-contact, non-invasive, direct assessment of the elastic properties of materials. However, strong elastic scattering and stray light from various sources often contaminate the Brillouin spectrum. A molecular absorption cell was introduced into the virtually imaged phased array (VIPA) based Brillouin spectroscopy setup to absorb the Rayleigh component, which resulted in a substantial improvement of the Brillouin spectrum quality.