Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group
  • Applied Spectroscopy
  • Vol. 64,
  • Issue 12,
  • pp. 1419-1422
  • (2010)

Molecular Iodine Fluorescence Spectra Generated with Helium-Neon Lasers for Spectrometer Calibration

Not Accessible

Your library or personal account may give you access

Abstract

Gas-phase molecular iodine laser-induced fluorescence (LIF) spectra were recorded out to 815 nm at 1 cm<sup>–1</sup> resolution using green, yellow, and red helium-neon (HeNe) lasers as excitation sources. Nine previously unreported I<sub>2</sub> <i>B</i>←<i>X</i> absorption transitions accessed by these lasers were identified, and specific rovibronic transition assignments were made for two hundred LIF peaks—more than sixty per laser. These I<sub>2</sub> LIF peaks can be used to calibrate the vacuum wavenumber coordinate of spectrometers to better than 0.1 cm<sup>–1</sup> accuracy. In particular, green HeNe excitation of the I<sub>2</sub> <i>R</i>(106) 28-0 transition leads to strong fluorescence well suited for calibration, with a rotational doublet spacing of 15 cm<sup>–1</sup> and a doublet-to-doublet spacing of 190 cm<sup>–1</sup>. Calibration by HeNe I<sub>2</sub> LIF may be an especially valuable technique for Raman spectroscopy applications.

PDF Article
More Like This
Helium–neon laser stabilized on iodine: design and performance

W. Tuma and C. J. van der Hoeven
Appl. Opt. 14(8) 1896-1897 (1975)

Helium–neon laser stabilized by saturated absorption in iodine at 612 nm

Pierre Cérez and Seton J. Bennett
Appl. Opt. 18(7) 1079-1083 (1979)

National Physical Laboratory–National Bureau of Standards iodine-stabilized helium–neon laser intercomparison

H. P. Layer, W. R. C. Rowley, and B. R. Marx
Opt. Lett. 6(4) 188-190 (1981)

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

Select as filters


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