844-fs mode-locked fiber laser by carboxyl-functionalized graphene oxide

Lina Duan; Hushan Wang; Jing Bai; Yonggang Wang; Lianglei Wei; Zhendong Chen; Jia Yu; Jin Wen; Yan Li

doi:10.1117/1.OE.56.11.116104

6 November 2017 844-fs mode-locked fiber laser by carboxyl-functionalized graphene oxide

Lina Duan, Hushan Wang, Jing Bai, Yonggang Wang, Lianglei Wei, Zhendong Chen, Jia Yu, Jin Wen, Yan Li

Author Affiliations +

Optical Engineering, Vol. 56, Issue 11, 116104 (November 2017). https://doi.org/10.1117/1.OE.56.11.116104

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 μs. 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.

Citation Download Citation

Lina Duan, Hushan Wang, Jing Bai, Yonggang Wang, Lianglei Wei, Zhendong Chen, Jia Yu, Jin Wen, and Yan Li "844-fs mode-locked fiber laser by carboxyl-functionalized graphene oxide," Optical Engineering 56(11), 116104 (6 November 2017). https://doi.org/10.1117/1.OE.56.11.116104

Received: 6 July 2017; Accepted: 11 October 2017; Published: 6 November 2017

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