OPTICAL GAIN COEFFICIENT MEASUREMENT OF COLLOIDAL SOLUTION OF SPASERS
The material was received by the Editorial Board: 05.03.2015
Optical gain coefficient of colloidal solution of spasers was measured by the variable stripe length method, where the intensity of the amplified spontaneous emission from the sample edge is measured as a function of excited volume. Spasers consist of gold core-silica (porous) shell nanoparticles penetrated with fluorescein. Under these conditions, we observed the exponential growth and narrowing of line and directivity of stimulated emission. The obtained optical gain coefficient of spaser colloids in fluorescein solution in ethanol is g = 16,2 cm–1. Separately, fluorescein solution in ethanol had g = 3,7 cm–1. Keywords:
spaser, optical gain coefficient.
УДК 535.37
OPTICAL GAIN COEFFICIENT MEASUREMENT OF COLLOIDAL SOLUTION OF SPASERS References: Benimetskiy F. A., Plekhanov A. I. OPTICAL GAIN COEFFICIENT MEASUREMENT OF COLLOIDAL SOLUTION OF SPASERS. Vestnik NSU. Series: Physics. 2015, vol. 10, no. 2. P. 5–9 (in Russ.). DOI: 10.54362/1818-7919-2015-10-2-5-9