High-power low spatial coherence random fiber laser

Ma, Rui, Li, Jia Qi, Guo, Jia Yu, Wu, Han, Zhang, Hua Hui, Hu, Bo, Rao, Yun Jiang and Zhang, Wei Li (2019). High-power low spatial coherence random fiber laser. Optics Express, 27 (6), pp. 8738-8744.

Abstract

A high-power multi-transverse modes random fiber laser (RFL) is investigated by combining a master oscillator power-amplifier (MOPA) configuration with a segment of extra-large mode area step-index multimode fiber (MMF). Spatial coherence of the high-power multi-transverse modes RFL has been analyzed, which shows that speckle contrast is reduced dramatically with the output power increasing. In this way, considerably low speckle contrast of ~0.01 is achieved under high laser power of ~56 W, which are the records for multi-transverse modes RFLs in both spatial coherence and output power. This work paves a way to develop high-power RFLs with very low spatial coherence for wide-range speckle-free imaging and free-space communication applications.

Publication DOI: https://doi.org/10.1364/OE.27.008738
Divisions: Engineering & Applied Sciences > Electrical, electronic & power engineering
Engineering & Applied Sciences > Institute of Photonics
Additional Information: © 2019 Optical Society of America under the terms of the OSA Open Access Publishing Agreement
Uncontrolled Keywords: Atomic and Molecular Physics, and Optics
Full Text Link:
Related URLs: http://www.scop ... tnerID=8YFLogxK (Scopus URL)
https://www.osa ... ri=oe-27-6-8738 (Publisher URL)
Published Online Date: 2019-03-11
Authors: Ma, Rui
Li, Jia Qi
Guo, Jia Yu
Wu, Han
Zhang, Hua Hui
Hu, Bo
Rao, Yun Jiang
Zhang, Wei Li ( 0000-0002-3584-8541)

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