Abstract

Random lasers (RL) have several interesting features that cannot be achieved with common bulk or fiber lasers such as simultaneous emission of several different wavelengths at the same time [1] and emission at new extremely low gain lines [2]. They also permit miniaturization and very low cost. To make the random emission useful, some sort of guiding mechanism that collects the stimulated emission is desirable [3]. In this work we propose the use of a hollow-core photonic crystal fiber (HC-PCF) based on a large-pitch Kagomé lattice to achieve a quasi-one-dimensional random laser (1D-RL) emission. The effective guiding property is demonstrated by a lower threshold of the high-gain scattering media RL inside the HC-PCF when compared with bulk RL emission inside a fluorescence cell.

© 2009 IEEE