Random laser spectroscopy for nanoscale perturbation sensing

Author

• Qinghai Song, Purdue University - Main CampusFollow
• Shumin Xiao, Purdue University - Main CampusFollow
• Zhengbin Xu, Purdue University - Main CampusFollow
• V. M. Shalaev, Birck Nanotechnology Center and School of Electrical and Computer Engineering, Purdue UniversityFollow
• Young L. Kim, Purdue University - Main Campus

Abstract

We report a spectroscopic method using coherent random lasers for a simple, yet nanoscale, sensing approach. Unique spectral properties of coherent random laser emission can be detectably altered when introducing nanoscale perturbations to a simple nanocomposite film that consists of dielectric nanospheres and laser-dye-doped polymer to serve as a transducer. Random lasing action provides a means to amplify subtle perturbations to readily detectable spectral shifts in multiple discrete emission peaks. Owing to several advantages, such as large-area detection, narrow and multiple emission peaks, straightforward detection, and simple fabrication, random laser spectroscopy has the potential for ultrasensitive, yet simple, biosensors in various applications.

Comments

Qinghai Song, Shumin Xiao, Zhengbin Xu, Vladimir M. Shalaev, and Young L. Kim. Random laser spectroscopy for nanoscale perturbation sensing. Optics Letters Vol. 35, Issue 15, pp. 2624-2626 (2010).

https://doi.org/10.1364/OL.35.002624

Keywords

LASING ACTION; TISSUES

DOI

10.1364/OL.35.002624

Citation

https://doi.org/10.1364/OL.35.002624

Date of this Version

8-2010

Recommended Citation

Song, Qinghai; Xiao, Shumin; Xu, Zhengbin; Shalaev, V. M.; and Kim, Young L., "Random laser spectroscopy for nanoscale perturbation sensing" (2010). Birck and NCN Publications. Paper 702.
http://dx.doi.org/10.1364/OL.35.002624