Hexagonal Boron Nitride as a Flexible Random Laser

Review of Open Cavity Random Lasers as Laser-Based Sensors

“…The current state of laser-based optical biosensors has mostly evolved around the use of laser dyes as a gain medium. − Such dye-based sensors typically result in a broad lasing spectrum (10 to 30 nm line widthwhich is comparable to fluorescence-based sensors) and are subject to degradation of the laser dye. As such, solid-state gain medium for random lasers has been extensively investigated by researchers to replace the need for laser dyes to achieve lasing. − Certain types of random lasers employing a solid-state gain medium with high scattering provided by the gain medium itself and have been shown to provide a narrow emission line. − Hence, degradation issues could be addressed by employing a solid-state gain medium with current laser-based biosensors.…”