0
research-article

A NOVEL MICROLASER BASED PLASMONIC-POLYMER HYBRID RESONATOR FOR MULTIPLEXED BIOSENSING APPLICATIONS

[+] Author and Article Information
Maurizio Manzo

Photonics Micro-Devices Fabrication Lab, Department of Engineering Technology, University of North Texas, Discovery Park - 3940 N Elm St, F115 Denton, Texas 76207, USA
maurizio.manzo@unt.edu

ryan schwend

Photonics Micro-Devices Fabrication Lab, Department of Engineering Technology, University of North Texas, Discovery Park - 3940 N Elm St, F115 Denton, Texas 76207, USA
ryanschwend@my.unt.edu

1Corresponding author.

ASME doi:10.1115/1.4042377 History: Received August 24, 2018; Revised December 16, 2018

Abstract

Whispering gallery mode (WGM) resonators exhibit a high quality factor Q and a small mode volume; they usually exhibit high resolution when used as sensors. The light trapped inside a polymeric micro-cavity travels through total internal reflection generating the whispering gallery modes (WGMs). A laser or a lamp is used to power the microlaser by using a laser dye embedded within the resonator. The excited fluorescence of the dye couples with the optical modes. The optical modes (laser modes) are seen as sharp peaks in the emission spectrum with the aid of an optical interferometer. The position of these optical modes is sensitive to any change in the morphology of the resonator. However, the laser threshold of these microlasers is of few hundreds of microjoules per square centimeter (fluence) usually. In addition, the excitation wavelength's light powering the device must be smaller than the microlasers size. When metallic nanoparticles are added to the microlaser, the excited surface plasmon couples with the emission spectrum of the laser dye. Therefore, the fluorescence of the dye can be enhanced by this coupling; this in turn, lowers the power threshold of the microlaser. Also, due to a plasmonic effect, it is possible to use smaller microlasers. In addition, a new sensing modality is enabled based on the variation of the optical modes' amplitude with the change in the morphology's microlaser. This opens a new avenue of low power consumption microlasers and photonics multiplexed biosensors.

Copyright (c) 2018 by ASME
Your Session has timed out. Please sign back in to continue.

References

Figures

Tables

Errata

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related Journal Articles
Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In