Author: Marcano O. A. Ojeda J. Melikechi N.
Publisher: Society for Applied Spectroscopy
ISSN: 0003-7028
Source: Applied Spectroscopy, Vol.60, Iss.5, 2006-05, pp. : 560-563
Disclaimer: Any content in publications that violate the sovereignty, the constitution or regulations of the PRC is not accepted or approved by CNPIEC.
Abstract
We describe a two-beam thermal lens spectrophotometer that uses a xenon lamp as the excitation source and a low power diode pumped Nd-YAG laser as the probe light. The white light from the xenon source is filtered using a variable interference filter producing a partial monochromatic light within the spectral range 400–700 nm and with a spectral resolution of 10 nm. We measure the thermal lens spectrum of a nonfluorescent dye (Malachite Green) and show that this spectrum reproduces its absorbance spectra measured by the usual transmission method. A comparison of the thermal lens and the absorbance spectra of a fluorescent dye (Rhodamine B) reveals substantial differences. These differences can yield important applications of the device for the characterization of fluorescent materials.
Related content
By Marcano Aristides Alvarado Salvador Meng Junwei Caballero Daniel Moares Ernesto Marín Edziah Raymond
Applied Spectroscopy, Vol. 68, Iss. 6, 2014-06 ,pp. :
By Webb J. D. Dunlavy D. J. Ciszek T. Ahrenkiel R. K. Wanlass M. W. Noufi R. Vernon S. M.
Applied Spectroscopy, Vol. 47, Iss. 11, 1993-11 ,pp. :