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6 papers · 2 filters
Photodegradation and self-healing in a Rhodamine 6G dye and YO nanoparticle-doped polyurethane random laser
Benjamin R. Anderson, Ray Gunawidjaja, Hergen Eilers
One of the fundamental difficulties in implementing organic dyes in random lasers is irreversible photodegradation of the dye molecules, leading to loss of performance and the need…
Stability of optimal-wave-front-sample coupling under sample translation and rotation
Benjamin R. Anderson, Ray Gunawidjaja, Hergen Eilers
The method of wavefront shaping to control optical properties of opaque media is a promising technique for authentication applications. One of the main challenges of this technique…
Low-Threshold and Narrow Linewidth Diffusive Random Lasing in Rhodamine 6G Dye-Doped Polyurethane with Dispersed ZrO Nanoparticles
Benjamin R. Anderson, Ray Gunawidjaja, Hergen Eilers
We report on low-threshold and narrow linewidth intensity feedback random lasing in Rhodamine 6G dye-doped polyurethane with dispersed ZrO nanoparticles. Depending on the dye/p…
Microgenetic optimization algorithm for optimal wavefront shaping
Benjamin R. Anderson, Patrick Price, Ray Gunawidjaja +1
One of the main limitations of utilizing optimal wavefront shaping in imaging and authentication applications is the slow speed of the optimization algorithms currently being used.…
Self-healing organic-dye-based random lasers
Benjamin R. Anderson, Ray Gunawidjaja, Hergen Eilers
One of the primary difficulties in the implementation of organic-dye-based random lasers is the tendency of organic dyes to irreversibly photodecay. In this letter we report the ob…
Effect of experimental parameters on optimal transmission of light through opaque media
Benjamin R. Anderson, Ray Gunawidjaja, Hergen Eilers
Spatial light modulator (SLM) controlled transmission of light through opaque media is a relatively new experimental method with wide applications in various fields. While there ha…