310-W Single Frequency Tm-Doped All-Fiber MOPA

Wang, Xiong; Jin, Xiaoxi; Wu, Weijun; Zhang, Pu; Wang, Xiaolin; Hu, Xiao; Liu, Zejin

doi:10.1109/lpt.2015.2390253

Cited by 29 publications

(11 citation statements)

References 23 publications

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“…However, the exact power limit in the TBZN fibre should be quantified according to the simulated heat dissipation. We here only discuss the RFL laser performance with pump power below 300 W, which has been demonstrated in our group [37] . The peak Raman gain coefficient and first-order Stokes emission wavelength are calculated to be and , respectively.…”

Section: Resultsmentioning

confidence: 99%

Power scaling on tellurite glass Raman fibre lasers for mid-infrared applications

Yao

Huang

Zhang

et al. 2018

High Pow Laser Sci Eng

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The power scaling on mid-infrared Raman fibre lasers (RFLs) is in demand for applications in health, environment and security. In this paper, we present the simulated laser behaviours of the tellurite glass RFLs pumped by 300-W Tm-doped fibre lasers (TDFLs) at 2 µm for the first time. By combining the advantages of the TDFLs and tellurite fibre, the output power at 2.35 µm has reached over hundreds of watts by first-order Raman shift. Moreover, the cascaded RFLs have been demonstrated with a wavelength extension greater than 3 µm and output power of tens of watts. To maximize the output power and the slope efficiency of the RFLs, we further analyse the interaction between the Raman gain and cavity loss, which are determined by fibre length and output reflectance of the laser cavity.

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Section: Resultsmentioning

confidence: 99%

Power scaling on tellurite glass Raman fibre lasers for mid-infrared applications

Yao

Huang

Zhang

et al. 2018

High Pow Laser Sci Eng

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“…reach a level of several hundred watts [17][18][19][20], wavelength stability and high-precision tunability are usually ingnored, which is cruicial for mid-infrared FGLs [15,16].…”

Section: Methodsmentioning

confidence: 99%

“…Due to the narrow absorption linewidth of gas molecules, the typical value is currently several hundred megahertz. Although many high-power, narrow-linewidth fiber lasers operating at 2 µm have been reported, and their output power can reach a level of several hundred watts [17][18][19][20], wavelength stability and high-precision tunability are usually ingnored, which is cruicial for mid-infrared FGLs [15,16].…”

Section: Introductionmentioning

confidence: 99%

Narrow-Linewidth 2 μm All-Fiber Laser Amplifier with a Highly Stable and Precisely Tunable Wavelength for Gas Molecule Absorption in Photonic Crystal Hollow-Core Fibers

Pei

Cui

et al. 2021

Molecules

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In recent years, mid-infrared fiber lasers based on gas-filled photonic crystal hollow-core fibers (HCFs) have attracted enormous attention. They provide a potential method for the generation of high-power mid-infrared emissions, particularly beyond 4 μm. However, there are high requirements of the pump for wavelength stability, tunability, laser linewidth, etc., due to the narrow absorption linewidth of gases. Here, we present the use of a narrow-linewidth, high-power fiber laser with a highly stable and precisely tunable wavelength at 2 μm for gas absorption. It was a master oscillator power-amplifier (MOPA) structure, consisting of a narrow-linewidth fiber seed and two stages of Thulium-doped fiber amplifiers (TDFAs). The seed wavelength was very stable and was precisely tuned from 1971.4 to 1971.8 nm by temperature. Both stages of the amplifiers were forward-pumping, and a maximum output power of 24.8 W was obtained, with a slope efficiency of about 50.5%. The measured laser linewidth was much narrower than the gas absorption linewidth and the wavelength stability was validated by HBr gas absorption in HCFs. If the seed is replaced, this MOPA laser can provide a versatile pump source for mid-infrared fiber gas lasers.

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“…[10], Li et al proposed a frequency-doubled triangular pulse (full duty cycle) signal generator, which requires a dual-parallel MZM driven by a sinusoidal signal. Except for the above approaches [5][6][7][8][9][10] , a triangular-shaped signal can also be generated by using optical polarization manipulation [11] , time domain processing [12] , nonlinear polarization rotation [13] , stimulated Brillouin scattering [14] , and an optoelectronic oscillator [15] . In Ref.…”

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confidence: 99%

Performance study of optical triangular-shaped pulse generation with full duty cycle

Hao

Wang

et al. 2017

Chin. Opt. Lett.

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A scheme of triangular-shaped pulses with full duty cycle generation is proposed and analyzed. Benefiting from the feature of orthogonal polarization, two approximate sinusoidal signals on different polarization states can be combined without inducing coherent interference. By tuning the time mismatching between the two signals, an approximately triangular-shaped profile can be obtained in the optical intensity. It is found that the modulation index β is no longer a fixed one, but it can be aligned within a proper range of 0.92 to 1.57. To evaluate the proposal, impacts of radio frequency voltage fluctuation, bias voltage drift, and time mismatching are discussed. Within the defined fitting error (η ≤ 3%), the tolerable range of the modulation index, time mismatching, and voltage have been found, which insures a simple operation in practice.

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310-W Single Frequency Tm-Doped All-Fiber MOPA

Cited by 29 publications

References 23 publications

Power scaling on tellurite glass Raman fibre lasers for mid-infrared applications

Power scaling on tellurite glass Raman fibre lasers for mid-infrared applications

Narrow-Linewidth 2 μm All-Fiber Laser Amplifier with a Highly Stable and Precisely Tunable Wavelength for Gas Molecule Absorption in Photonic Crystal Hollow-Core Fibers

Performance study of optical triangular-shaped pulse generation with full duty cycle

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