Switchable single- and dual-wavelength femtosecond mode-locked Er-doped fiber laser based on carboxyl-functionalized graphene oxide saturable absorber

Qimeng Lin; Li Yan; Yuanqi Song; Xuzhuo Jia; Xiaoqiang Feng; Lei Hou; Jintao Bai

doi:10.3788/COL202119.111405

Journals >Chinese Optics Letters >Volume 19 >Issue 11 >Page 111405 > Article

Chinese Optics Letters
Vol. 19, Issue 11, 111405 (2021)

Switchable single- and dual-wavelength femtosecond mode-locked Er-doped fiber laser based on carboxyl-functionalized graphene oxide saturable absorber

Qimeng Lin^1、2、3, Li Yan^1、2、3, Yuanqi Song^1、2、3, Xuzhuo Jia^1、2、3, Xiaoqiang Feng^1、2、3, Lei Hou^{1、2、3、*}, and Jintao Bai^{1、2、3、**}

Author Affiliations

¹State Key Laboratory of Energy Photon-technology in Western China, Shaanxi Engineering Technology Research Center for Solid State Lasers and Application, Northwest University, Xi’an 710069, China

²International Collaborative Center on Photoelectric Technology and Nano Functional Materials, Provincial Key Laboratory of Photo-electronic Technology, Northwest University, Xi’an 710069, China

³Institute of Photonics & Photon-technology, Northwest University, Xi’an 710069, China

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DOI: 10.3788/COL202119.111405 Cite this Article Set citation alerts

Qimeng Lin, Li Yan, Yuanqi Song, Xuzhuo Jia, Xiaoqiang Feng, Lei Hou, Jintao Bai. Switchable single- and dual-wavelength femtosecond mode-locked Er-doped fiber laser based on carboxyl-functionalized graphene oxide saturable absorber[J]. Chinese Optics Letters, 2021, 19(11): 111405 Copy Citation Text

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Fig. 1. (a) Setup of the balanced twin-detector measurement method; (b) nonlinear optical characteristics of the GO-COOH.

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Fig. 2. Raman spectrum of GO-COOH film.

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Fig. 3. Configuration of the Er-doped MLFL. WDM, wavelength division multiplexer; gain fiber, Er-doped fiber; PD-ISO, polarization-dependent isolator; PC, polarization controller; OC, optical coupler.

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Fig. 4. Characteristics of single-wavelength conventional soliton fiber laser oscillator. (a) Oscilloscopic pulse train. (b) The corresponding optical spectrum. (c) Radio frequency (RF) spectrum; the inset is RF in the 1 GHz range. (d) Autocorrelation (AC) trace of the output pulse.

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Fig. 5. Characteristics of dual-wavelength conventional soliton fiber laser oscillator. (a) Pulse train with different intensities. (b) The corresponding optical spectrum. (c) RF spectrum with 110 Hz resolution. (d) AC trace of the output pulse.

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Fig. 6. (a) Evolution of the optical spectrum of the fiber laser with the pump power. (b) The evolution of the output power of the fiber laser with the pump power.

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Nanomaterials	$λ$ (nm)	$Δ λ$ (nm)	Length of Gain Fiber (m)	Repetition Frequency (MHz)	Output Power (mW)	Pulse Duration (ps)	Ref. No.
Bismuthene	1531.6/1543.2	11.6	1.4	208	–	1.58	[18]
Bismuthene	1544.85/1554.53	9.68	1.4	44	–	–	[19]
Graphene	1533.4/1556.11	22.71	4.5	8.4/9.1	11.36	0.9/0.94	[20]
${Ti}_{3} C_{2}$ T_x-Mxene	1575.6/1587.5	11.9	1.3	11.1/166.5	–	–	[21]
$G / {SnO}_{2} / PANI$	1532/1557.6	25.6	5	2.13	3.2	1.25	[22]
${MnPS}_{3}$	1565.19/1565.63	0.44	3.2	5.109	27.2	3800	[23]
${WS}_{2}$	1568.55/1569	0.45	5	2.14	14.2	11	[24]
BP	1533/1558	25	3.2	20.8	–	0.7	[25]
h-BN	1531.5/1557.5	26	4.5	2.1	7.2	1.3	[26]
CNT	1531/1557	26	5	16.58	–	–	[27]
GO-COOH	1531.9/1555.2	23.3	0.6	31.2	19.8	0.515	This work