Ontology highlight
ABSTRACT:
SUBMITTER: Hoinka NM
PROVIDER: S-EPMC7015940 | biostudies-literature | 2020 Feb
REPOSITORIES: biostudies-literature
Hoinka Nicolai M NM Ostwald Christoph C Fuhrmann-Lieker Thomas T
Scientific reports 20200212 1
Random lasers consisting of slab waveguides with two-dimensional disordered wrinkling patterns that act as scattering resonators are reported. As active material 2,2',7,7'-tetraphenyl-9,9'-spirobifluorene is used which is sandwiched between an oxidized silicon wafer and a cladding with higher glass transition temperature. Wrinkles with tailorable periodicity have been induced by thermal annealing. Photopumping experiments show the transition from amplified spontaneous emission to a multiple peak ...[more]