Phys.org October 31, 2023
An international team of researchers (Russia, UK, Germany) investigated active spatial control of polariton condensates independent of the polariton, gain-inducing excitation profile by introducing an extra intracavity semiconductor layer, nonresonant to the cavity mode. Partial saturation of the optical absorption in the uncoupled layer enabled the ultrafast modulation of the effective refractive index and, through excited-state absorption, the polariton dissipation. Utilizing an intricate interplay of these mechanisms, they demonstrated control over the spatial profile, density, and energy of a polariton condensate at room temperature… read more. TECHNICAL ARTICLEÂ
Top: schematic of a double-dye organic microcavity… Credit: Phys. Rev. Lett. 131, 186902 , 30 October, 2023Â