The concept of random lasers exploiting multiple scattering of photons in an amplifying
disordered medium in order to generate coherent light without a traditional laser resonator …

In conventional lasers, the optical cavity that confines the photons also determines essential
characteristics of the lasing modes such as wavelength, emission pattern, directivity, and …

We report an alternative random laser (RL) architecture based on a flexible and ZnO-
enriched cellulose acetate (CA) fiber matrix prepared by electrospinning. The electrospun …

A waveguide-plasmonic scheme is constructed by coating the matrix of randomly distributed
gold nanoisland structures with a layer of dye-doped polymer, which provides strong …

Random lasing consists of a sequence of narrow, coherent spectral lines formed when
stimulated emission in a disordered gain medium is excited above threshold excitation …

The angular emission pattern of a random laser is typically very irregular and difficult to tune.
Here we show by detailed numerical calculations that one can overcome the lack of control …

We demonstrate the realization of a coherent random fiber laser (RFL) in the extremely
weakly scattering regime, which contains a dispersive solution of polyhedral oligomeric …

Active control of the spatial pump profile is proposed to exercise control over random laser
emission. We demonstrate numerically the selection of any desired lasing mode from the …

In a random laser the optical feedback is provided by scattering rather than by an optical
cavity. Then, since its emission characteristics are very susceptible to the scattering details, it …

In a random laser (RL), optical feedback arises from multiple scattering instead of
conventional mirrors. RLs generate a laser-like emission, and meanwhile take advantage of …