Laser Resonators Formed by Two Nanoparticles
Abstract
We demonstrate lasing in a cavity formed by two Mie scatterers in a dye colloidal solution. Like a Fabry-Perot cavity, the feedback mechanism for lasing is based on back scattering from each particle. Strong light amplification in between the scatterer pair not only compensate its large diffraction loss, but also help to choose the particular pair out of many scatterers in the suspension to form the laser cavity. Such cavity selection is facilitated by a careful designed cone shaped excitation geometry. Detailed experimental studies on the threshold behavior, spectral characteristic of lasing emission, and output directionality are presented. A simple theoretical model provides qualitative explanation for this lasing phenomenon.
Recommended Citation
X. Wu et al., "Laser Resonators Formed by Two Nanoparticles," Proceedings of SPIE, SPIE -- The International Society for Optical Engineering, Jan 2006.
The definitive version is available at https://doi.org/10.1117/12.647859
Department(s)
Physics
Keywords and Phrases
Dye Solution; Two-Scatterer Laser; Mie scattering
Document Type
Article - Conference proceedings
Document Version
Citation
File Type
text
Language(s)
English
Rights
© 2006 SPIE -- The International Society for Optical Engineering, All rights reserved.
Publication Date
01 Jan 2006
