Semiconducting Polymer Dots as Saturable Absorbers for Mode-Locked Thulium-Doped Fiber Lasers

We demonstrated an all-fiber passively mode-locked thulium-doped fiber laser (TDFL) using organic semiconducting polymer dots (Pdots) based saturable absorber (SA). The Pdots are prepared by methods of donor-acceptor moieties and reprecipitation, which possess a broadband absorption from 400 to 2200...

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Main Authors: Fang Wang, Yue Sun, Xuenan Zhang, Shuguang Li, Tonglei Cheng
Format: Article
Language:English
Published: IEEE 2020-01-01
Series:IEEE Access
Subjects:
Online Access:https://ieeexplore.ieee.org/document/9195841/
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author Fang Wang
Yue Sun
Xuenan Zhang
Shuguang Li
Tonglei Cheng
author_facet Fang Wang
Yue Sun
Xuenan Zhang
Shuguang Li
Tonglei Cheng
author_sort Fang Wang
collection DOAJ
description We demonstrated an all-fiber passively mode-locked thulium-doped fiber laser (TDFL) using organic semiconducting polymer dots (Pdots) based saturable absorber (SA). The Pdots are prepared by methods of donor-acceptor moieties and reprecipitation, which possess a broadband absorption from 400 to 2200 nm and nonlinear saturable absorption property at 2 μm. By depositing the Pdots onto the microfiber as an SA, long nonlinear interaction length of evanescent wave and Pots can be achieved. An ultrafast fiber laser operating at 1926 nm was observed. The output power could reach to 76.2 mW at the maximum pump power of 2.1 W. Compared with Pdot-film SAs in our previous work, these experimental results verify that PdotSAs functioned with evanescent field interaction are promising nonlinear optical modulators for ultrafast and high-power pulse generation.
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spelling doaj.art-9cf69c826b74449ab182e829d9c2fb592022-12-21T17:26:08ZengIEEEIEEE Access2169-35362020-01-01816980416980910.1109/ACCESS.2020.30240079195841Semiconducting Polymer Dots as Saturable Absorbers for Mode-Locked Thulium-Doped Fiber LasersFang Wang0https://orcid.org/0000-0002-3812-1866Yue Sun1Xuenan Zhang2https://orcid.org/0000-0002-3629-4392Shuguang Li3https://orcid.org/0000-0001-6233-2105Tonglei Cheng4https://orcid.org/0000-0003-2869-0771State Key Laboratory of Synthetical Automation for Process Industries, College of Information Science and Engineering, Northeastern University, Shenyang, ChinaState Key Laboratory of Synthetical Automation for Process Industries, College of Information Science and Engineering, Northeastern University, Shenyang, ChinaState Key Laboratory of Synthetical Automation for Process Industries, College of Information Science and Engineering, Northeastern University, Shenyang, ChinaState Key Laboratory of Synthetical Automation for Process Industries, College of Information Science and Engineering, Northeastern University, Shenyang, ChinaState Key Laboratory of Synthetical Automation for Process Industries, College of Information Science and Engineering, Northeastern University, Shenyang, ChinaWe demonstrated an all-fiber passively mode-locked thulium-doped fiber laser (TDFL) using organic semiconducting polymer dots (Pdots) based saturable absorber (SA). The Pdots are prepared by methods of donor-acceptor moieties and reprecipitation, which possess a broadband absorption from 400 to 2200 nm and nonlinear saturable absorption property at 2 μm. By depositing the Pdots onto the microfiber as an SA, long nonlinear interaction length of evanescent wave and Pots can be achieved. An ultrafast fiber laser operating at 1926 nm was observed. The output power could reach to 76.2 mW at the maximum pump power of 2.1 W. Compared with Pdot-film SAs in our previous work, these experimental results verify that PdotSAs functioned with evanescent field interaction are promising nonlinear optical modulators for ultrafast and high-power pulse generation.https://ieeexplore.ieee.org/document/9195841/Semiconducting polymer dotsmicrofibersaturable absorbermode-locked
spellingShingle Fang Wang
Yue Sun
Xuenan Zhang
Shuguang Li
Tonglei Cheng
Semiconducting Polymer Dots as Saturable Absorbers for Mode-Locked Thulium-Doped Fiber Lasers
IEEE Access
Semiconducting polymer dots
microfiber
saturable absorber
mode-locked
title Semiconducting Polymer Dots as Saturable Absorbers for Mode-Locked Thulium-Doped Fiber Lasers
title_full Semiconducting Polymer Dots as Saturable Absorbers for Mode-Locked Thulium-Doped Fiber Lasers
title_fullStr Semiconducting Polymer Dots as Saturable Absorbers for Mode-Locked Thulium-Doped Fiber Lasers
title_full_unstemmed Semiconducting Polymer Dots as Saturable Absorbers for Mode-Locked Thulium-Doped Fiber Lasers
title_short Semiconducting Polymer Dots as Saturable Absorbers for Mode-Locked Thulium-Doped Fiber Lasers
title_sort semiconducting polymer dots as saturable absorbers for mode locked thulium doped fiber lasers
topic Semiconducting polymer dots
microfiber
saturable absorber
mode-locked
url https://ieeexplore.ieee.org/document/9195841/
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AT yuesun semiconductingpolymerdotsassaturableabsorbersformodelockedthuliumdopedfiberlasers
AT xuenanzhang semiconductingpolymerdotsassaturableabsorbersformodelockedthuliumdopedfiberlasers
AT shuguangli semiconductingpolymerdotsassaturableabsorbersformodelockedthuliumdopedfiberlasers
AT tongleicheng semiconductingpolymerdotsassaturableabsorbersformodelockedthuliumdopedfiberlasers