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Updated: Jul 3, 2026
10:35
Using Microwave and Macroscopic Samples of Dielectric Solids to Study the Photonic Properties of Disordered Photonic Bandgap Materials
Published on: September 26, 2014
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Lasing from Micro- and Nano-Scale Photonic Disordered Structures for Biomedical Applications.
R Gayathri1, C S Suchand Sandeep1, C Vijayan2
1Centre for Optical and Laser Engineering, School of Mechanical and Aerospace Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore.
Nanomaterials (Basel, Switzerland)
|September 9, 2023
Summary
Disordered photonic media enable random lasing through light scattering. Recent advancements show potential for random lasers in biomedical imaging and biosensing applications.
Area of Science:
- Photonics and Optics
- Condensed Matter Physics
Background:
- Disordered photonic media feature randomly distributed scatterers.
- Light propagation involves multiple scattering events, akin to a random walk.
- Micro- and nano-scale structures enhance light-matter interactions.
Purpose of the Study:
- To discuss the fundamental physics of light propagation in disordered structures.
- To review the phenomenon of random lasing.
- To highlight recent advancements and biomedical applications of random lasers.
Main Methods:
- Theoretical discussion of light propagation and multiple scattering.
- Review of experimental techniques for random laser fabrication and characterization.
- Analysis of recent literature on random laser advancements.
Main Results:
- Random lasing arises from coherent backscattering in disordered media with gain.
- Tunable, quasi-monochromatic emission is characteristic of random lasers.
- Disordered structures provide a versatile platform for novel laser functionalities.
Conclusions:
- Random lasing is a unique phenomenon driven by light scattering in disordered media.
- Recent progress has expanded the capabilities and applications of random lasers.
- Future potential lies in biomedical imaging and biosensing.
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