Bloch Surface Wave-Coupled Emission at Ultraviolet Wavelengths
Ramachandram BaduguCenter
for Fluorescence Spectroscopy, Department of Biochemistry and Molecular
Biology, University of Maryland School of Medicine, 725 West Lombard
Street, Baltimore, Maryland 21201, United StatesJieying MaoDepartment
of Physics and Astronomy, University of Utah, 50 S. Central Campus Drive, Salt Lake City, Utah 84112, United StatesSteve BlairDepartment
of Electrical and Computer Engineering, University of Utah, 50 S. Central Campus Drive, Salt Lake City, Utah 84112, United StatesDouguo ZhangInstitute
of Photonics, Department of Optics and Optical Engineering, University of Science and Technology of China, Hefei, Anhui 230026, ChinaEmiliano DescroviDepartment
of Applied Science and Technology, Polytechnic University of Turin, Corso Daca degli Abruzzi 24, 10129 Turin, ItalyAngelo AngeliniDepartment
of Applied Science and Technology, Polytechnic University of Turin, Corso Daca degli Abruzzi 24, 10129 Turin, ItalyYiping HuoCenter
for Fluorescence Spectroscopy, Department of Biochemistry and Molecular
Biology, University of Maryland School of Medicine, 725 West Lombard
Street, Baltimore, Maryland 21201, United StatesJoseph R. LakowiczCenter
for Fluorescence Spectroscopy, Department of Biochemistry and Molecular
Biology, University of Maryland School of Medicine, 725 West Lombard
Street, Baltimore, Maryland 21201, United States
ABI
Annotatsiya
. We show that this structure displays BSWs and that the near-UV fluorophore, 2-aminopurine (2-AP), on the top surface of the structure couples with the BSWs. Fluorophores do not have to be inside the structure for coupling and show a narrow angular distribution, with an angular separation of wavelengths. The Bloch wave-coupled emission (BWCE) radiates through the dielectric layer. These BSW structures, with useful wavelength range for detection of intrinsic protein and cofactor fluorescence, provide opportunities for novel optical configurations for bioassays with surface-localized biomolecules and for optical imaging using the coupled emission.
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