Inexpensive high speed dentist drill light chopper and its use in rejecting luminescence background from Raman spectra

Robert Nemanich, S. A. Solin, J. Doehler

Research output: Contribution to journalArticle

5 Scopus citations


An inexpensive dentist drill laser beam chopper is described. The chopper, which can be tuned for a chopping frequency from 100 Hz to 400 kHz, is compact, stable, and easily constructed. The usefulness of the dentist drill laser beam chopper is demonstrated in a technique for the suppression of luminescence background in Raman spectra. The technique is shown to be capable of almost complete suppression of luminescence with decay lifetimes greater than 10-6 sec.

Original languageEnglish (US)
Pages (from-to)741-744
Number of pages4
JournalReview of Scientific Instruments
Issue number6
Publication statusPublished - Jun 1976
Externally publishedYes


ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)
  • Instrumentation

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