Precise absorption line feature measurements with higher harmonic detection

Author

Barrington, J.M. ; Jogu, R. ; Kuhn, T.R. ; Bullock, A.M. ; Dharamsi, A.N.

Author_Institution

Dept. of Electr. & Comput. Eng., Old Dominion Univ., Norfolk, VA, USA

fYear

2001

fDate

11-11 May 2001

Firstpage

407

Abstract

Summary form only given. Wavelength modulation spectroscopy (WMS) with simultaneous detection at several harmonics of the modulation frequency is described. The method´s precision is within two percent which allows very small deviations in the signal to be extracted. The novel approach taken allows non-intrusive measurements to be obtained using a compact, inexpensive instrument.

Keywords

measurement errors; modulation spectroscopy; optical harmonic generation; spectral line narrowing; compact inexpensive instrument; higher harmonic detection; modulation frequency; nonintrusive measurements; precise absorption line feature measurements; simultaneous detection; small signal deviations extraction; very small deviations; wavelength modulation spectroscopy; Absorption; Circuit stability; Frequency estimation; Frequency modulation; Laser stability; Laser tuning; Optimized production technology; Probes; Spectroscopy; Wavelength measurement;

fLanguage

English

Publisher

ieee

Conference_Titel

Lasers and Electro-Optics, 2001. CLEO '01. Technical Digest. Summaries of papers presented at the Conference on

Conference_Location

Baltimore, MD, USA

Print_ISBN

1-55752-662-1

Type

conf

DOI

10.1109/CLEO.2001.947979

Filename

947979