Low-threshold stimulated emission from lysozyme amyloid fibrils doped with a blue laser dye
Journal article, 2015

© 2015 AIP Publishing LLC. Amyloid fibrils are excellent self-assembling nanotemplates for organic molecules such as dyes. Here, we demonstrate that laser dye-doped lysozyme type fibrils exhibit significantly reduced threshold for stimulated emission compared to that observed in usual matrices. Laser action was studied in slab planar waveguides of the amyloids doped with Stilbene 420 laser dye prepared using a film casting technique. The lowering of the threshold of stimulated emission is analyzed in the context of intrinsic structure of the amyloid nanotemplates, electrostatic interaction of different microstructures with dye molecules, as well as material properties of the cast layers. All these factors are considered to be of importance for introducing gain for random laser operation.

Author

L. Sznitko

Wrocław University of Science and Technology

Piotr Hanczyc

Wrocław University of Science and Technology

J. Myśliwiec

Wrocław University of Science and Technology

M.J. Samoć

Wrocław University of Science and Technology

Applied Physics Letters

0003-6951 (ISSN) 1077-3118 (eISSN)

Vol. 106 2

Subject Categories

Inorganic Chemistry

Physical Chemistry

Biochemistry and Molecular Biology

Atom and Molecular Physics and Optics

Materials Chemistry

Biophysics

Organic Chemistry

Other Natural Sciences

Areas of Advance

Nanoscience and Nanotechnology (SO 2010-2017, EI 2018-)

Life Science Engineering (2010-2018)

Materials Science

DOI

10.1063/1.4905782

More information

Latest update

7/10/2019