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Magnetic‐Field‐Switchable Laser via Optical Pumping of Rubrene
Name
Advanced Materials - 2021 - Perkinson - Magnetic‐Field‐Switchable Laser via Optical Pumping of Rubrene.pdf
Description
Published version
Size
2.68 MB
Format
Adobe PDF
Checksum (MD5)
38b8fba056b982a49ef31338fc0112f1
Author(s)
Perkinson, Collin F
Einzinger, Markus
Finley, Joseph
Bawendi, Moungi G
Baldo, Marc A
Date Issued
January 2022
Journal
Advanced Materials
Publisher
Wiley
Citation
Perkinson, Collin F, Einzinger, Markus, Finley, Joseph, Bawendi, Moungi G and Baldo, Marc A. 2022. "Magnetic‐Field‐Switchable Laser via Optical Pumping of Rubrene." Advanced Materials, 34 (4).
Version
Final published version
Abstract
Volumetric optical imaging of magnetic fields is challenging with existing magneto-optical materials, motivating the search for dyes with strong magnetic field interactions, distinct emission spectra, and an ability to withstand high photon flux and incorporation within samples. Here, the magnetic field effect on singlet-exciton fission is exploited to demonstrate spatial imaging of magnetic fields in a thin film of rubrene. Doping rubrene with the high-quantum yield dye dibenzotetraphenylperiflanthene (DBP) is shown to enable optically pumped, slab waveguide lasing. This laser is magnetic-field-switchable: when operated just below the lasing threshold, application of a 0.4 T magnetic field switches the device between nonlasing and lasing modes, accompanied by an intensity modulation of +360%. This is thought to be the first demonstration of a magnetically switchable laser, as well as the largest magnetically induced change in emission brightness in a singlet-fission material to date. These results demonstrate that singlet-fission materials are promising materials for magnetic sensing applications and could inspire a new class of magneto-optical modulators.
Terms of Use
Creative Commons Attribution 4.0 International license
Persistent DSpace Link
DOI of Published Version
10.1002/adma.202103870
