Dual-mode output in half open cavity random fibre laser.

Abstract The mechanism of laser mode in fibre laser has been a popular talking issue since decades ago. Numerous mode mechanisms are revealed from time to time such as LP and TM. From these modes, fundamental mode and higher-order mode exhibit practical applications such as in fibre laser. Based on this perspective, we employ the mode mechanism in random fibre laser with half open cavity that generates dual-mode output which consists of LP01 and LP11 modes. The investigation on our proposed laser setup is beneficial for developing photonics system that involves the implementation of few-modes mechanism. Highlights • We demonstrated a dual mode output RFL that provides LP01 and LP11 modes simultaneously at 1.55 μ m wavelength region. • First demonstration of random fibre laser in few mode fibre. • A novel solution to generates LP01 and LP11 modes. [ABSTRACT FROM AUTHOR]