Physics – Condensed Matter – Materials Science
Scientific paper
2011-01-05
Rev. Sci. Instrum. 82, 023905 (2011)
Physics
Condensed Matter
Materials Science
6 pages, 6 figures, accepted for publication at Review of Scientific Instruments
Scientific paper
10.1063/1.3544023
We present a high sensitivity single-monochromator Raman spectrometer which allows operation with a tunable laser source. The instrument is based on the modification of a commercial Raman spectrometer; such instruments operate with holographic Rayleigh filters which also act as a laser mirrors and are usually considered as inherently narrow-band. In our design, the two tasks are separated and the filter can be freely rotated without much effect on the light alignment. Since rotation shifts the filter passband, this modification allows tunable operation with efficient stray light filtering down to 150 1/cm. The design is optimized for single-wall carbon nanotubes, for which the performance is demonstrated using a tunable dye-laser source. The spectrometer thus combines the high sensitivity with the broadband characteristics of usual triple monochromator systems.
Fábián Gábor
Friedrich Alexander
Kramberger Christian
Pichler Thomas
Simon Ferenc
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