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|Title:||High energy ultrafast laser at 2 μm using dispersion engineered Thulium-doped fiber||Authors:||Chen, Yuhao
Cheng, Chen Jian
Rao, Shreesha D. S.
|Keywords:||Engineering::Electrical and electronic engineering||Issue Date:||2019||Source:||Chen, Y., Chen, S., Sidharthan, R., Cheng, C. J., Liu, K., Rao, S. D. S., Bang, O., Wang, Q., Tang, D. & Yoo, S. (2019). High energy ultrafast laser at 2 μm using dispersion engineered Thulium-doped fiber. IEEE Photonics Journal, 11(6). https://dx.doi.org/10.1109/JPHOT.2019.2945928||Project:||2018-T1- 001-148 (RG 84/18)
|Journal:||IEEE Photonics Journal||Abstract:||We report on demonstration of high energy pulse laser at 2 μm by employing a normal dispersion fiber attained by a waveguide dispersion engineering. The normal dispersion fiber has a W-type refractive index profile, with a Thulium(Tm)-doped core. In contrast to a strong anomalous dispersion at 2 μm in a step-index fiber, the design allows strong waveguide dispersion that can generate normal dispersion at the Tm emission band. Mode area scalability of this fiber is discussed under the normal dispersion requirement. The Tm-doped fiber (TDF) is deployed in a ring cavity to produce mode-locked pulses near 2 μm. Subsequently, the pulse is amplified with more than 27 dB gain through the normal dispersion TDF. The output pulse energy reaches up to ∼525 nJ at 1852 nm without pulse breaking due to the engineered dispersion. The achieved pulse energy is record high for all-fiber configuration near 2 μm, to our knowledge.||URI:||https://hdl.handle.net/10356/147101||ISSN:||1943-0655||DOI:||10.1109/JPHOT.2019.2945928||Rights:||© 2019 IEEE. This journal is 100% open access, which means that all content is freely available without charge to users or their institutions. All articles accepted after 12 June 2019 are published under a CC BY 4.0 license, and the author retains copyright. Users are allowed to read, download, copy, distribute, print, search, or link to the full texts of the articles, or use them for any other lawful purpose, as long as proper attribution is given.||Fulltext Permission:||open||Fulltext Availability:||With Fulltext|
|Appears in Collections:||EEE Journal Articles|
Updated on May 26, 2022
Updated on May 26, 2022
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