Threshold optimization of polymeric opal photonic crystal cavity as organic solid-state dye-doped laser Available to Purchase

The authors have demonstrated the optimization of the active layer thickness on the threshold of organic solid-state dye-doped laser (SSDL), which was fabricated by three-dimensional polymeric opal photonic crystal and tert-butyl Rhodamine B (⁠$t$-Bu-RhB) doped polymer film. Gain media were produced by incorporating $t$-Bu-RhB into polymer film at 3.0 wt %. The sandwiched laser resonator cavities with different active layer thickness displayed single-mode lasing oscillations in the reflection band gap of the resonator structure. The lasing threshold as low as $1.13μJ/pulse$ was achieved. The optimization of active layer would provide an opportunity to accelerate the development of low threshold polymeric SSDLs.