Measurements of anomalous gain coefficients in transversely excited CO2 lasers

Journal Article · Tue Nov 01 04:00:00 EST 1983 · IEEE J. Quant. Electron.; (United States)

DOI:https://doi.org/10.1109/JQE.1983.1071777· OSTI ID:6489338

Brimacombe, R K; Reid, J

A detailed study of the gain coefficients of more than 150 transitions in the (00/0/1-10/0/0)I, II and (00/0/2-10/0/1)I, II bands of CO2 was made. Measurements were made in a transversely excited discharge at pressures of 80 and 425 torr. Many lines were found to have anomalously high gain coefficients, but all the anomalies are accurately predicted by a model which takes into account the effect of overlapping transitions. Results indicate that the majority of transitions in an atmospheric pressure discharge have anomalous gain coefficients under typical discharge conditions. This fact has not been generally recognized, and the neglect of overlapping transitions can lead to errors in determining rotational temperatures. 34 references.

• Research Organization: McMaster Univ., Hamilton, Ontario, Canada
• OSTI ID: 6489338
• Journal Information: IEEE J. Quant. Electron.; (United States), Journal Name: IEEE J. Quant. Electron.; (United States) Vol. QE-19; ISSN IEJQA
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
420300* -- Engineering-- Lasers-- (-1989)
CARBON DIOXIDE LASERS
GAS LASERS
LASERS
PRESSURE DEPENDENCE
SPECIFICATIONS
SPECTRA