Over 100 mW Stable Low-Noise Single-Frequency Ring-Cavity Fiber Laser Based on a Saturable Absorber of Bi/Er/Yb Co-Doped Silica Fiber

Wan, Ying; Wen, Jianxiang; Jiang, Chen; Zhang, Kai; Tang, Fengzai; Pang, Fufei

doi:10.1109/jlt.2021.3124227

Cited by 14 publications

(3 citation statements)

References 31 publications

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“…In 2020, Yeh et al [20] presented a tunable single-frequency narrow linewidth fiber laser with erbium doped fiber (EDF) as SA and self-feedback injection and the wavelength tuning range was 60 nm with an average output linewidth of 18 kHz. In 2022, Wan et al [21] of Shanghai University reported a ring-cavity single-frequency fiber laser with Bi/Er/Yb co-doped fiber as the SA, and the tested linewidth was less than 7.5 kHz. In this regard, the generation of single-frequency lasers by employing the technique of using unpumped fibers as SA with linewidths below 1 kHz and a power of tens of milliwatts has yet been poorly explored.…”

Section: Introductionmentioning

confidence: 99%

Narrow linewidth fiber laser with multiple unpumped EDF fiber loops and self-injection feedback

Li,

Yang,

Sui

et al. 2023

Laser Phys. Lett.

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In this paper, we proposed a narrow linewidth single-longitudinal-mode (SLM) fiber laser, which was realized by employing a triple-cascaded unpumped erbium doped fiber (EDF) Sagnac loops structure with Rayleigh backscattering (RBS) feedback. Narrow linewidth SLM laser output can be achieved by using the unpumped EDF loops. However, it is generally difficult to achieve laser emission with a linewidth below 1 kHz and a power of tens of milliwatts. In this paper, we propose a fiber laser with multiple unpumped Er-doped fiber loops and self-injection feedback. The cascade of multi-unpumped Er-doped fiber rings is employed to reduce the linewidth of the laser, while the self-injection feedback based on RBS is used to improve the stability of the laser and further compress the laser linewidth. By only utilizing three unpumped Er-doped fiber rings cascaded, we obtain an output beam with a linewidth of 723.05 Hz and laser power of 21.52 mW with 0.30 dB fluctuation during a period time of 30 min at the pump power of 170.6 mW. After introducing the feedback mechanism based on RBS into the fiber laser, an output laser with a linewidth of 530.11 Hz and a laser power of 8.57 mW with 0.23 dB fluctuation in 30 min can be obtained at the pump power of 268.68 mW. Compared with the fiber laser with one unpumped Er-doped fiber ring, the linewidth is reduced more than two times.

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Section: Introductionmentioning

confidence: 99%

Narrow linewidth fiber laser with multiple unpumped EDF fiber loops and self-injection feedback

Li,

Yang,

Sui

et al. 2023

Laser Phys. Lett.

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“…Recently, near-infrared gain fiber-based fiber lasers working at around 1.0 µm have been widely used in optical detection, medical surgery, and laser ranging [1][2][3][4]. Some rare-earth ions, like Yb 3+ ions or Nd 3+ ions, have realized 1.0 µm emissions in suitable matrix materials [5][6][7][8]. Compared with Nd 3+ ions, the energy level of Yb ions is relatively simple and only possesses 2 F 5/2 and 2 F 7/2 levels [9].…”

Section: Introductionmentioning

confidence: 99%

Heat-Induced Emission Enhancement in a Yb:YAG Crystal-Derived Silica Fiber

et al. 2022

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We fabricated a Yb:YAG crystal-derived silica fiber (YCDSF) by the melt-in-tube method with a CO2 laser-heated drawing tower and explored the influences of the heat treatment method on fluorescent properties in the YCDSF. After the heat treatment, the intensity of the emission peaks and the fluorescence lifetime of the YCDSFs improved. In particular, after 1350 °C of heat treatment, a series of sharp peaks appeared in the core layer, which may form a new crystalline phase. Moreover, its emission intensity at 1030 nm was significantly enhanced, over 2 times greater than before the heat treatment. Additionally, the fluorescence lifetime of Yb ions was also increased from 129 to 621 μs, indicating the changes in local environments around Yb ions. Then, schematic models were set up to show how the local environments around Yb ions are gradually changing. These results revealed that the assessed YCDSF is of excellent performance; after the heat treatment, it may be a potential material for realizing optical amplification, light sources, fiber lasers, and so on.

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“…Single-frequency fiber ring lasers (FRLs) have been extensively investigated owing to their applications in fiber-optic sensing, optical communication, high-precision spectroscopy and seeding of high-power fiber lasers [1][2][3]. Compared with linear-cavity lasers, most FRLs have a longer fiber ring cavity, narrower mode spacing, and lots of fiber devices incorporated in the cavity, which increase the complexity of laser configuration and make the laser performance highly susceptible to intracavity heat accumulation effect and external perturbation.…”

Section: Introductionmentioning

confidence: 99%

Experimental investigation on mode instability phenomenon of a fiber ring laser

Xie

et al. 2022

Optoelectronic Devices and Integration XI

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Mode instability phenomenon acts as a common feature in single-frequency fiber ring lasers. Pump power and cavity length are two important control parameters affecting the output SLM stability. In this work, mode instability of an EDFRL has been experimentally investigated by utilizing two effective methods. On the whole, a mode stability map of the EDFRL scaled by pump coefficient is measured and discussed completely through the interferometer scheme, which helps to evaluate the mode stability dependent on pump power in a form of global visualization. Besides, real-time and detailed detection of various mode instability behaviors, including occasional mode hopping, periodic mode hopping and intermittent MLM oscillation, is carried out using the optical heterodyne scheme. The dynamics of mode instability can also be visualized by on-line time-frequency diagrams. This work will contribute to the analysis, understanding and suppression of mode hopping in fiber ring lasers.

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Over 100 mW Stable Low-Noise Single-Frequency Ring-Cavity Fiber Laser Based on a Saturable Absorber of Bi/Er/Yb Co-Doped Silica Fiber

Abstract: How to cite:Please refer to published version for the most recent bibliographic citation information. If a published version is known of, the repository item page linked to above, will contain details on accessing it.

Cited by 14 publications

References 31 publications

Narrow linewidth fiber laser with multiple unpumped EDF fiber loops and self-injection feedback

Narrow linewidth fiber laser with multiple unpumped EDF fiber loops and self-injection feedback

Heat-Induced Emission Enhancement in a Yb:YAG Crystal-Derived Silica Fiber

Experimental investigation on mode instability phenomenon of a fiber ring laser

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