The semiconductor ZnO has gained substantial interest in the research community in part
because of its large exciton binding energy (60 meV) which could lead to lasing action …

A random laser is a non-conventional laser whose feedback mechanism is based on
disorder-induced light scattering. Depending on whether the feedback supplied by …

This volume provides a thorough treatment of multiple scattering of light and other
electromagnetic radiation in media composed of randomly and sparsely positioned particles …

We have observed spatial confinement of laser light in micrometer-sized random media. The
optical confinement is attributed to the disorder-induced scattering and interference. Our …

In this paper we present calculations on light diffusion with amplification that can explain
previous experiments on the spontaneous emission from such a medium. Also we discuss …

The random laser represents a non-conventional laser whose feedback is mediated by
random fluctuation of the dielectric constant in space. Depending on whether the feedback is …

This review focuses on the optical properties and device applications of deterministic
aperiodic media generated by mathematical rules with spectral features that interpolate in a …

Laserlike emission in powders of praseodymium-doped oxisulfides of yttrium, lanthanum,
and gadolinium has been reported in References [1, 2] under laser pumping (at different …

A model to simulate the phenomenon of random lasing is presented. It couples Maxwell's
equations with the rate equations of electronic population in a disordered system. Finite …

We report on a new random laser phenomenon that gives rise to narrow emission modes
without requiring optical cavities. Sharp emission peaks are observed experimentally over a …