Magnetic-Field-Switchable Laser via Optical Pumping of Rubrene

© 2021 The Authors. Advanced Materials published by Wiley-VCH GmbH.

Bibliographische Detailangaben
Veröffentlicht in:Advanced materials (Deerfield Beach, Fla.). - 1998. - 34(2022), 4 vom: 01. Jan., Seite e2103870
1. Verfasser: Perkinson, Collin F (VerfasserIn)
Weitere Verfasser: Einzinger, Markus, Finley, Joseph, Bawendi, Moungi G, Baldo, Marc A
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2022
Zugriff auf das übergeordnete Werk:Advanced materials (Deerfield Beach, Fla.)
Schlagworte:Journal Article lasers magnetic field imaging magnetic sensors optical modulators singlet fission triplet-triplet annihilation upconversion
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520 |a 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 
650 4 |a Journal Article 
650 4 |a lasers 
650 4 |a magnetic field imaging 
650 4 |a magnetic sensors 
650 4 |a optical modulators 
650 4 |a singlet fission 
650 4 |a triplet-triplet annihilation 
650 4 |a upconversion 
700 1 |a Einzinger, Markus  |e verfasserin  |4 aut 
700 1 |a Finley, Joseph  |e verfasserin  |4 aut 
700 1 |a Bawendi, Moungi G  |e verfasserin  |4 aut 
700 1 |a Baldo, Marc A  |e verfasserin  |4 aut 
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