Abstract

Measurements of the temperature variation of the resonant absorption coefficient in shock heated CO₂ gas (350–1600 K) using a laser source operating on the P(20) or P(18) transition are reported. Values obtained are compared with theory allowing for mixed mode contributions to absorption as well as dependence of the optical broadening cross section on temperature.

© 1974 Optical Society of America

High temperature absorption in the 10.4- μm band of CO₂

A. M. Robinson and Norman Sutton
Appl. Opt. 18(3) 378-385 (1979)

High temperature 10.4-μm absorption in CO₂–He–N₂ mixtures

A. M. Robinson and E. F. Girczyc
Appl. Opt. 19(12) 1969-1972 (1980)

Extended high temperature measurements of absorption at 10.4 μm in CO₂

Alexander M. Robinson and D. Garand
Appl. Opt. 28(5) 967-969 (1989)

Measurements of Small Signal Absorption at High Temperature for the 001–100 Band of CO₂

R. Leon Leonard
Appl. Opt. 13(8) 1920-1922 (1974)

CO₂ Laser Absorption Coefficients for Determining Ambient Levels of O₃, NH₃, and C₂H₄

R. R. Patty, G. M. Russwurm, W. A. McClenny, and D. R. Morgan
Appl. Opt. 13(12) 2850-2854 (1974)