Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

The Use of Photomultipliers in Raman Spectroscopy

Not Accessible

Your library or personal account may give you access

Abstract

The dark current and signal/noise characteristics of an RCA 1P21 and an E.M.I. VX5031 photomultiplier have been compared from the point of view of their suitability for photoelectric Raman spectroscopy. The construction of a simple apparatus for the refrigeration of the RCA tube to liquid oxygen temperature is described. It is found that at low temperatures the noise associated with the dark current of the photomultiplier is negligible compared with the fluctuations (shot effect) in the photocurrent obtained when recording Raman spectra. Under these conditions the signal-to-noise ratio obtainable for a given rate of scanning of the spectrum depends solely on the square root of the light flux incident upon the photomultiplier, and cannot be improved by further refrigeration of the detector.

© 1953 Optical Society of America

Full Article  |  PDF Article
More Like This
Photoelectric Raman Spectrometer with Automatic Range Changing. I. Conversion of Photographic Instrument*

Robert F. Stamm, C. F. Salzman, and Thomas Mariner
J. Opt. Soc. Am. 43(2) 119-125 (1953)

The Use of Photomultiplier Tubes for Photon Counting

R. Foord, R. Jones, C. J. Oliver, and E. R. Pike
Appl. Opt. 8(10) 1975-1989 (1969)

The Efficient Use of Photomultiplier Tubes for Recording Spectra

J. Rolfe and S. E. Moore
Appl. Opt. 9(1) 63-71 (1970)

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Figures (6)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Equations (5)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved