Abstract

We present a detailed numerical investigation of the tunability of a diffusive random laser when Mie resonances are excited. We solve a multimode diffusion model and calculate multiple light scattering in presence of optical gain that includes dispersion in both scattering and gain, without any assumptions about the $\beta$ parameter. This allows us to investigate a realistic photonic glass made of latex spheres and rhodamine and to quantify both the lasing wavelength tunability range and the lasing threshold. Beyond what is expected by diffusive monochromatic models, the highest threshold is found when the competition between the lasing modes is strongest and not when the lasing wavelength is furthest from the maximum of the gain curve.

© 2015 Optical Society of America

Distributed feedback and random lasing in DCNP aggregates dispersed in a polymeric layer

Kacper Parafiniuk, Lech Sznitko, and Jaroslaw Mysliwiec
Opt. Lett. 40(7) 1552-1555 (2015)

Observation of photonic paramagnetic to spin-glass transition in a specially designed TiO₂ particle-based dye-colloidal random laser

Pablo I. R. Pincheira, Andréa F. Silva, Serge I. Fewo, Sandra J. M. Carreño, André L. Moura, Ernesto P. Raposo, Anderson S. L. Gomes, and Cid B. de Araújo
Opt. Lett. 41(15) 3459-3462 (2016)

Stokes mode Raman random lasing in a fully biocompatible medium

Venkata Siva Gummaluri, S. R. Krishnan, and C. Vijayan
Opt. Lett. 43(23) 5865-5868 (2018)

Discrete-mode ZnO microparticle random laser

Toshihiro Nakamura, Shohei Sonoda, Taisei Yamamoto, and Sadao Adachi
Opt. Lett. 40(11) 2661-2664 (2015)

Low-threshold lasing at 1975  nm in thulium-doped tellurite glass microspheres

Francis Vanier, François Côté, Mohammed El Amraoui, Younès Messaddeq, Yves-Alain Peter, and Martin Rochette
Opt. Lett. 40(22) 5227-5230 (2015)