Polarized Laser Switching with Giant Contrast in MOF-Based Mixed-Matrix Membrane.

ABSTRACT: Nonlinear optical (NLO) switch materials have attracted considerable attention in photonics. Although various materials based on complex structural transitions have been developed extensively, the studies on light-driven up-conversion laser switches are rare, which have advantages including easy operations at room temperature and high contrasts. Here, the concept of photoswitch building unit is proposed to construct a novel sandwich-like mixed-matrix membrane. Dye@metal-organic framework (MOF) crystals and spirooxazine are regarded as the laser emission and absorption units, followed by their hierarchical encapsulation into the polydimethylsiloxane carrier unit. Excited MOF microcrystals exhibit two-photon pumped lasing anisotropy, with an ultrahigh degree of linear polarization (≈99.9%).

SUBMITTER: Li H 

PROVIDER: S-EPMC9189632 | biostudies-literature | 2022 Jun

REPOSITORIES: biostudies-literature