Optically pumped surface-emitting lasing using self-assembled block-copolymer-distributed Bragg reflectors.
A thin-film organic laser cavity using a block-copolymer-based one-dimensional (1D) photonic crystal was fabricated. Polymeric distributed Bragg reflectors (DBRs) were prepared through the self-assembly of a lamellar-forming poly(styrene-b-isoprene) (PS-b-PI) diblock copolymer having a 1D photonic stop band overlapping with the fluorescence spectrum of a gain medium. Optically pumped surface-emitting lasing was obtained using poly(methyl methacrylate) (PMMA) doped with 1,4-di-(2-methylstyryl)benzene (Bis-MSB) as an organic gain medium and the polymeric self-assembled DBR as a spectral-band selective feedback element.
Yoon
Jongseung
J
Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA.
Lee
Wonmok
W
Thomas
Edwin L
EL
D003460:Crystallization / Q000379:methods; D004867:Equipment Design; D019544:Equipment Failure Analysis; D007834:Lasers; D008027:Light; D036103:Nanotechnology / Q000295:instrumentation* / Q000379:methods; D011108:Polymers / Q000737:chemistry* / Q000528:radiation effects; D012031:Refractometry / Q000295:instrumentation* / Q000379:methods; D013499:Surface Properties
D011108:Polymers