Abstract

A Raman microprobe has been modified to function as a visible microspectrometer by the addition of an area-defining aperture and several neutral-density filters. The system enables visible absorbance spectra to be obtained on samples whose size is as small as ten micrometers in diameter. Several examples are presented which illustrate the capabilities and limitations of the modified system.

Microspectroscopy*

John R. Loofbourow
J. Opt. Soc. Am. 40(5) 317-325 (1950)

Raman microprobe analysis of preforms and optical fibers

W. Carvalho, P. Dumas, M. Delhaye, J. Corset, Y. Levy, and C. Imbert
Appl. Opt. 23(23) 4197-4201 (1984)

Three-dimensional materials analysis by confocal Raman microspectroscopy

Lothar Kador, Tobias Schittkowski, Markus Bauer, and Yuwei Fan
Appl. Opt. 40(28) 4965-4970 (2001)

Parallel Raman microspectroscopy using programmable multipoint illumination

Ji Qi and Wei-Chuan Shih
Opt. Lett. 37(8) 1289-1291 (2012)

Infra-Red Microspectroscopy*

Elkan R. Blout, George R. Bird, and David S. Grey
J. Opt. Soc. Am. 40(5) 304-313 (1950)