No abstract

Supercontinuum laser has been paid more and more attention in recent years because of its wide spectral range and good directivity. Research on the transmission of supercontinuum laser in atmosphere is beneficial to its practical application. Supercontinuum generated by pumping a piece of photonic crystal fiber with output power of ~4.9W and generation directly in a random fiber laser with output power of ~2W were used in a 850 m transmission field tests respectively. The test was based on a Newtonian telescope to collimate and expand the laser, apply a real-time measurement of the ontarget power with an optical power meter at the receiving place. Experimental results show that the supercontinuum generated by random fiber laser can reduce the atmospheric impact more effectively than the other one.

A monolithic visible supercontinuum (SC) source with a record average output power of 204 W and a spectrum ranging from 580 nm to beyond 2400 nm is achieved in a piece of standard telecom graded-index multimode fiber (GRIN MMF) by designing the pumping system. The influence of the GRIN MMF length on the geometrical parameter instability (GPI) effect is analyzed for the first time, to the best of our knowledge, by comparing the SC spectral region dominated by the GPI effect under different fiber lengths. Our work could pave the way for robust, cost-effective, and high-power visible SC sources.