The Retroreflective Array as a New Optical Element in Atomic Absorption Spectroscopy

Abstract
A retroreflective array is used in the phase conjugate configuration to compensate for refractive noise in flame atomic absorption spectroscopy. The system is shown to provide reductions in refractive noise by a factor of five to seven, using the Mn 403.1-nm line. The compensation provides 10–50% increase in sensitivity in noisy flames.