Application of Tunable Diode Laser Spectroscopy for Time Resolved Measurements in Electron-Beam Produced Plasma

Author

Serdyuchenko, Anna Yu ; Seeley, Megan V. ; Sinnott, Quinn J. ; Vidmar, Robert J.

Author_Institution

Univ. of Nevada, Reno

fYear

2007

Firstpage

307

Lastpage

307

Abstract

Summary form only given. Tunable diode laser absorption spectroscopy was used for the investigation of the temporal evolution of neutral species concentrations in air plasma, which is produced by a 100 keV electron beam at pressures from 760 Torr down to 1 Torr. The spectrometer applied is based on a set of fiber-coupled distributed feedback lasers. Absorption spectra of species (H₂O, OH, CO₂, CO, NO and N₂O) in near infrared (1.3 -1.8 nm) were recorded with resolution ~ 1 ms. Temperatures and absolute values for the concentrations were found over a broad dynamic range. Possibilities for increasing the signal-to-noise ratio are outlined.

Keywords

electron beams; fibre lasers; plasma diagnostics; plasma-beam interactions; semiconductor lasers; spectra; CO₂; H₂O; N₂O; OH; air plasma; electron volt energy 100 keV; electron-beam produced plasma; fiber-coupled distributed feedback lasers; pressure 760 torr to 1 torr; signal-to-noise ratio; tunable diode laser absorption spectroscopy; wavelength 1.3 mum to 1.8 mum; Absorption; Diode lasers; Distributed feedback devices; Electron beams; Fiber lasers; Plasma applications; Plasma measurements; Spectroscopy; Time measurement; Tunable circuits and devices;

fLanguage

English

Publisher

ieee

Conference_Titel

Plasma Science, 2007. ICOPS 2007. IEEE 34th International Conference on

Conference_Location

Albuquerque, NM

ISSN

0730-9244

Print_ISBN

978-1-4244-0915-0

Type

conf

DOI

10.1109/PPPS.2007.4345613

Filename

4345613