title: High-Q, Low-Threshold Monolithic Perovskite Thin-Film Vertical-Cavity Lasers.
abstract: A vertical-cavity surface-emitting perovskite laser is achieved using a microcavity configuration where CH3NH3PbI3thin solid films are embedded within a custom GaN-based high-quality (Q-factor) resonator. This single-mode perovskite laser reaches a low threshold (≈7.6 µJ cm-2) at room temperature and emits spatially coherent Gaussian laser beams. The devices allow direct access to the study of perovskite gain dynamics and material robustness.
authors.affiliation: School of Engineering, Brown University, Providence, RI, 02912, USA.
authors.forename: Songtao
authors.initials: S
authors.lastname: Chen
authors.affiliation: Department of Electrical Engineering, Yale University, New Haven, CT, 06511, USA.
authors.forename: Cheng
authors.initials: C
authors.lastname: Zhang
authors.affiliation: School of Engineering, Brown University, Providence, RI, 02912, USA.
authors.forename: Joonhee
authors.initials: J
authors.lastname: Lee
authors.affiliation: Department of Electrical Engineering, Yale University, New Haven, CT, 06511, USA.
authors.forename: Jung
authors.initials: J
authors.lastname: Han
authors.affiliation: School of Engineering and Department of Physics, Brown University, Providence, RI, 02912, USA.
authors.forename: Arto
authors.initials: A
authors.lastname: Nurmikko
keywords: gain dynamics; nanoporous GaN; perovskites; quasi-steady state; vertical-cavities surface-emitting lasers