Direct measurement of O-2(a(1)Delta) and O-2(X-3 Sigma) in chemical oxygen-iodine lasers with use of spontaneous Raman imaging

摘要

A spontaneous Raman imaging System (SRIS) has been developed that can monitor chemical oxygen-iodine laser (COIL) singlet oxygen generator (SOG) performance in real time. This system permits one to monitor directly the SOG performance by measuring O-2(a(1) Delta) and O-2(X-3 Sigma) simultaneously with a single intensified CCD allay at the exit of an imaging monochromator. We present the results from tests conducted on a 0.25-mol SOG using a prototype Raman system. Performance and validation of a highly sensitive SRIS that was designed and built specifically for SOG diagnostics are discussed. Detection and possible interferences of other species relevant to COIL devices such as I-2 and Cl-2 are investigated. (C) 1998 Optical Society of America. [References: 13]