Strong Coupling and Laser Action of Ladder-Type Oligo(p-phenylene)s in a Microcavity

Author(s)

Hoefner, Michael ^[1] ; Kobin, Bjoern ^[2] ; Hecht, Stefan ^[2] ; Henneberger, Fritz ^[1]

Affiliation

^[1] Humboldt Univ, Dept Phys, D-12489 Berlin - Germany

^[2] Humboldt Univ, Dept Chem, D-12489 Berlin - Germany

• Document type: Journal article
• Source: ChemPhysChem; v. 15, n. 17, p. 3805-3808, DEC 1 2014.
• Web of Science Citations: 2

Abstract

We investigate the coupling of ladder-type quarterphenyl to the photon modes of a dielectric ZrOx/SiOx microcavity at ultraviolet wavelengths. For a relatively long cavity (approximate to 10 m) with high-reflectivity mirrors (0.998), optically pumped laser action is demonstrated in the weak-coupling regime. We observe single-mode operation with a threshold of 0.4 mJcm(-2). Strong coupling is achieved by using a short /2 cavity. We find pronounced anti-crossing features of the molecular (0,0) and (0,1) vibronic transitions and the cavity mode in angle-dependent reflectivity measurements providing Rabi splittings of (90 +/- 10) meV. All these features occur spectrally resonant to the exciton transition of ZnO demonstrating the potential of ladder-type oligo(p-phenylene)s for the construction of inorganic/organic hybrid microcavities. (AU)

• FAPESP's process: 11/50151-0 - Dynamical phenomena in complex networks: fundamentals and applications
• Grantee: Elbert Einstein Nehrer Macau
• Support Opportunities: Research Projects - Thematic Grants