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Optical Engineering

844-fs mode-locked fiber laser by carboxyl-functionalized graphene oxide
Author(s): Lina Duan; Hushan Wang; Jing Bai; Yonggang Wang; Lianglei Wei; Zhendong Chen; Jia Yu; Jin Wen; Yan Li
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Paper Abstract

We had proved that a kind of graphene nanomaterial “carboxyl-functionalized graphene oxide (GO-COOH)” possessed nonlinear saturable absorber (SA) property. The modulation depth of a GO-COOH water solution was measured as 8 % . Moreover, a GO-COOH-based SA device was made and applied in an erbium-doped fiber laser. In this fiber laser, Q -switching pulses and mode-locked pulses were both obtained. With an increase in the pump power, the pulse width of Q -switching pulses decreased from 9.05 to 2.49    μ s . The mode-locked pulse width was 844 fs, and the corresponding spectral bandwidth was 3.64 nm. Moreover, polarization adjusting or control was not needed during the whole process of mode locking. It illustrated that the proposed fiber laser incorporating GO-COOH could endure bigger intracavity birefringence. Our results indicated that the GO-COOH nanomaterial was a promising SA for generating high-performance pulse lasers.

Paper Details

Date Published: 6 November 2017
PDF: 5 pages
Opt. Eng. 56(11) 116104 doi: 10.1117/1.OE.56.11.116104
Published in: Optical Engineering Volume 56, Issue 11
Show Author Affiliations
Lina Duan, Xi'an Shiyou Univ. (China)
Hushan Wang, Xi'an Institute of Optics and Precision Mechanics, CAS (China)
Jing Bai, Xi'an Institute of Optics and Precision Mechanics, CAS (China)
Yonggang Wang, Shaanxi Normal Univ. (China)
Lianglei Wei, Shaanxi Normal Univ. (China)
Zhendong Chen, Shaanxi Normal Univ. (China)
Jia Yu, Xi'an Technological Univ. (China)
Jin Wen, Xi'an Shiyou Univ. (China)
Yan Li, Xi'an Shiyou Univ. (China)

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