Two-photon-pumped frequency-upconverted yellow lasing in a novel dye solution

Two-photon induced frequency upconversion emission and two-photon-pumped (TPP) lasing properties of a novel dye, trans-2-[p-(N-ethyl-N-(hydroxyethyl)amino)styryl]-N-methylthiazolinium iodide (1) were investigated. This dye exhibits excellent TPP lasing at ∼577 nm when it is pumped with a 1064 nm pulsed laser beam. The net conversion efficiency from the absorbed 1064 nm pump energy to the ∼577 nm upconverted lasing energy was measured to be ∼2.2%.