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Amplified Spontaneous Emission in Paper.


ABSTRACT: Industrially produced copy paper is presented as a novel optical material for narrow-band stimulated emission. Fluorescent brightening agents (FBA) such as Calcofluor White provide enough gain to exceed the threshold for amplified spontaneous emission. By applying an additional dye such as Coumarin 307, or simply a highlighter pen, the emission line can be shifted from blue (~440?nm), towards turquoise (>480?nm), up to orange (590?nm) which can be useful for spectroscopic applications. These properties are demonstrated in two papers, a commercial copy paper and a FBA-stained calligraphy paper.

SUBMITTER: Hoinka NM 

PROVIDER: S-EPMC6372576 | BioStudies | 2019-01-01T00:00:00Z

REPOSITORIES: biostudies

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