Inexpensive high-speed dentist drill light chopper and its use in rejecting luminescence background from Raman spectra
1976; American Institute of Physics; Volume: 47; Issue: 6 Linguagem: Inglês
10.1063/1.1134726
ISSN1527-2400
AutoresR. J. Nemanich, S. A. Solin, J. Doehler,
Tópico(s)Ocular and Laser Science Research
ResumoAn 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.
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