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Start Over Author "Wang, Ruihua" Journal optics letters
6 results on '"Wang, Ruihua"'

6. Ternary chalcogenide Ta 2 NiS 5 as a saturable absorber for a 1.9  μm passively Q-switched bulk laser.

Author

Yan B, Zhang B, He J, Nie H, Li G, Liu J, Shi B, Wang R, and Yang K

Abstract

In this Letter, a high-quality saturable absorber (SA) based on a multilayered two-dimensional ternary chalcogenide Ta 2 NiS 5 with a narrow bandgap, has been successfully fabricated and used as a SA in a 1.9 μm spectral region. The nonlinear saturable absorption properties of the as-prepared SA have been investigated by using an open-aperture Z-scan method. A passively Q-switched all-solid-state laser operating at 1.9 μm has been realized with the Ta 2 NiS 5 SA. The maximum average output power, shortest pulse width, pulse energy, and pulse peak power from the passively Q-switched (PQS) laser are 1.1 W, 313 ns, 22.0 μJ, and 71.0 W, respectively. This is the first demonstration of the saturable absorption property of Ta 2 NiS 5 , to the best of our knowledge. The results indicate well the promising potential of Ta 2 NiS 5 as a broadband SA in realizing pulsed mid-infrared lasers with high performance.

Published
2019
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