On the Possibility of Lasing in Luminophores with an Anomalously Large Stokes Shift

Abstract

The spectral and photophysical properties of two colorless compounds 2-(1,3-benzothiazol-2-yl)-bromophenol and N-[2-(4-oxo-3,4-dihydroquinazolin-2-yl)phenyl]naphthalene-2-sulfonamide with an anomalously large Stokes shift of luminescence have been investigated. The possibility of lasing with a potentially broad tuning of the spectral band in the green–yellow spectral region under pumping by the third harmonic of a Nd:YAG laser has been demonstrated in 2-(1,3-benzothiazol-2-yl)-bromophenol.