Plasmonic nanolaser for intracavity spectroscopy and sensorics
Abstract
We demonstrate intracavity plasmonic laser spectroscopy using a plasmonic laser created from a periodically-perforated silver film with a liquid gain medium. An active zone of the laser is formed by a highly elongated spot of pumping. This results in an 80x decrease in the threshold pumping level; in a significantly more efficient diffusive mixing of dye molecules, which substantially suppresses the effect of their bleaching; and in the ability to reduce the volume of the gain medium to as little as 400 nL. We use this design for a stable plasmonic laser in multiple measurements and demonstrate that it is highly effective as a spaser spectroscopy sensor for intracavity detection of an absorptive dye at 70 ppb. This work provides an opportunity to develop applications of intracavity plasmonic laser spectroscopy in biological label detection and other fields.
Cite
@article{arxiv.1709.02328,
title = {Plasmonic nanolaser for intracavity spectroscopy and sensorics},
author = {P. Melentyev and A. Kalmykov and A. Gritchenko and A. Afanasiev and V. Balykin and A. Baburin and E. Ryzhova and I. Filippov and 4 I. Rodionov and I. Nechepurenko and A. Dorofeenko and I. Ryzhikov and A. Vinogradov and A. Zyablovsky and E. Andrianov and A. A. Lisyansky},
journal= {arXiv preprint arXiv:1709.02328},
year = {2017}
}