Abstract：
: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 laser spectrum with linewidths as low as 0.1 nm, demonstrating the applicability of this approach for random laser design.
journal_name
Sci Repjournal_title
Scientific reportsauthors
Hoinka NM,Ostwald C,Fuhrmann-Lieker Tdoi
10.1038/s41598-020-59236-4subject
Has Abstractpub_date
2020-02-12 00:00:00pages
2434issue
1issn
2045-2322pii
10.1038/s41598-020-59236-4journal_volume
10pub_type
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