Abstract
Multispectral refractometers typically measure refractive index (RI) at discrete monochromatic wavelengths via a serial process. We report on the demonstration of a white light full-field imaging-based refractometer capable of instantaneous multispectral measurement of absolute RI of clear liquid-gel samples across the entire visible light spectrum. The broad optical bandwidth refractometer is capable of hyperspectral measurement of RI in the range 1.30–1.70 between 400 and 700 nm with a maximum error of 0.0036 units (0.24% of actual) at 414 nm for an sample. We present system design and calibration method details as well as results from a system validation sample.
©2012 Optical Society of America
Full Article | PDF ArticleMore Like This
Samantha Dale Strasser, Gajendra Shekhawat, Jeremy D. Rogers, Vinayak P. Dravid, Allen Taflove, and Vadim Backman
Opt. Lett. 37(4) 506-508 (2012)
Qianghua Chen, Huifu Luo, Sumei Wang, and Feng Wang
Opt. Lett. 37(14) 2916-2918 (2012)
Weijian Chen, John E. Saunders, Jack A. Barnes, Scott S.-H. Yam, and Hans-Peter Loock
Opt. Lett. 38(3) 365-367 (2013)