Abstract

The continued development of CARS as a combustion research tool calls for increasingly accurate knowledge of spectroscopic parameters such as Raman linewidths, line shapes, and transition frequencies and nonresonant electronic susceptibilities of combustion species. High-resolution inverse Raman spectroscopy (IRS) has been invaluable in providing Raman linewidths^1,2 for N₂ and CO as well as accurate molecular constants. However, this technique has limited sensitivity for in situ investigations and does not provide nonresonant susceptibilities. While similar high-resolution CARS systems have been used for general spectroscopy,³ we know of no applications of such systems to combustion environments.

© 1986 Optical Society of America