Lasing from micro- and nano-scale photonic disordered structures for biomedical applications

• Main Authors: Gayathri, Radhakrishn, Suchand Sandeep, Chandramathi Sukumaran, Vijayan, C., Murukeshan, Vadakke Matham
• Other Authors: School of Mechanical and Aerospace Engineering
• Format: Article
• Language: English
• Published: 2024
• Subjects: Science::Physics::Optics and light; Bioimaging; Biosensing
• Online Access: https://hdl.handle.net/10356/173214
• Institution: Nanyang Technological University

A disordered photonic medium is one in which scatterers are distributed randomly. Light entering such media experiences multiple scattering events, resulting in a "random walk"-like propagation. Micro- and nano-scale structured disordered photonic media offer platforms for enhanced light-matter interaction, and in the presence of an appropriate gain medium, coherence-tunable, quasi-monochromatic lasing emission known as random lasing can be obtained. This paper discusses the fundamental physics of light propagation in micro- and nano-scale disordered structures leading to the random lasing phenomenon and related aspects. It then provides a state-of-the-art review of this topic, with special attention to recent advancements of such random lasers and their potential biomedical imaging and biosensing applications.