Abstract
A CW dye laser has been used to study transient optical gain on the B →X electronic transition of iodine monofluoride. By placing the gain generator inside the CW dye laser cavity, gain was readily observed even at levels too small to support lasing in a low loss cavity. Transient phenomena, including V–T energy transfer, were easily observable. An analysis of the intracavity gain detection technique revealed a method for estimating optical gain. The technique should be readily applicable to other systems.
Highlights
The search for a visible chemical laser system has been an ongoing research task for more than a decade
The gain was detected with Detection system 1 (DS-1) ("fast" detection electronics) at 6252/1, (10 ]k bandpass) corresponding to the 0’-5" transition, with the probe laser having been set at 6205/
As illustrated by the results reported in this paper, the usefulness of the technique as a kinetic tool may be limited by the presence of various other mechanisms which give rise to transients in the probe laser output, and care must be taken to characterize these
Summary
The search for a visible chemical laser system has been an ongoing research task for more than a decade. During this time numerous papers describing chemiluminescence and kinetic studies with the stated goal of laser development have appeared in the literature1’2. Despite the considerable activity in the area, there has yet to be a successful visible chemical laser demonstration. This stems from the inherently more difficult problem of efficiently channeling chemical energy into electronically excited states, in contrast to the analogous.
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