Measurements of anomalous gain coefficients in transversely excited CO/sub 2/ 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:7048527

Brimacombe, R K; Reid, J

The authors have made a detailed study of the gain coefficients of more than 150 transitions in the (00/sup 0/1-10/sup 0/0) I, II and (00/sup 0/2-10/sup 0/1) I, II bands of CO/sub 2/. 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 anamalous 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.

• Research Organization: Depts. of Engineering Physics and Physics, McMaster Univ., Ontario L8S M41
• OSTI ID: 7048527
• Journal Information: IEEE J. Quant. Electron.; (United States), Journal Name: IEEE J. Quant. Electron.; (United States) Vol. 19:11; ISSN IEJQA
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
420300* -- Engineering-- Lasers-- (-1989)
ACCURACY
AMPLIFICATION
CARBON DIOXIDE LASERS
ENERGY-LEVEL TRANSITIONS
ERRORS
EXCITATION
GAIN
GAS LASERS
LASERS
LOW PRESSURE
MATHEMATICAL MODELS
MEASURING METHODS
TEMPERATURE MEASUREMENT