The Supercontinuum (SC) has certain advantages in atmospheric transmission by virtue of its wide spectrum, high brightness and good directionality, etc. In this paper, two SC sources, laser-pumped photonic crystal fiber generating supercontinuum and random fiber laser structure outputting supercontinuum, are used to carry out an experimental study of atmospheric transmission at a distance of about 1 km. By analyzing the changes of power, time domain, spectrum and spot distribution pre- and post-transmission, the effect of atmospheric turbulence on the supercontinuum transmission is studied from the experimental point of view, which lays a solid foundation for future space transmission applications of SC.
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 on-target 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.
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