Abstract
A coherent forward scattering spectrometer was used as a wavelength tuning indicator for diode laser atomic absorption spectrometry. Atomic absorption transition of excited argon atoms at 842.46 nm was investigated. Argon atoms were excited in a glow discharge. Coherent forward scattering signal attained maximum at 0.1 T of external magnetic field and at 12 mA discharge current in 266 Pa (2 Torr) of argon. When the lasing wavelength crossed an atomic absorption line, a spike-like signal was observed. When a continuous coherent forward scattering signal was observed, the lasing wavelength was confirmed to approach within about ±3 pm from the absorption transition of argon.
| Original language | English |
|---|---|
| Pages (from-to) | 757-760 |
| Number of pages | 4 |
| Journal | Spectroscopy Letters |
| Volume | 48 |
| Issue number | 10 |
| DOIs | |
| Publication status | Published - 2015 Nov 26 |
Keywords
- argon
- atomic absorption
- coherent forward scattering
- diode laser
- tuning indicator
ASJC Scopus subject areas
- Analytical Chemistry
- Atomic and Molecular Physics, and Optics
- Spectroscopy