Watt-level 1.7-μm single-frequency thulium-doped fiber oscillator

Zhang, Lu; Zhang, Junxiang; Sheng, Quan; Shi, Chaodu; Shi, Wei; Yao, Jianquan

doi:10.1364/oe.434001

Cited by 37 publications

(8 citation statements)

References 26 publications

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“…To achieve single-frequency operation in a ring cavity, the compound cavity scheme, composed of several passive sub-ring cavities and a main cavity, have been widely used. By optimizing the individual cavity length of the three sub-rings to enlarge the free spectral range, a watt-level single-frequency output power at 1720 nm was obtained [56], as shown in Fig. 11.…”

Section: Wavelength Extensionmentioning

confidence: 99%

Recent progress of high-power single-frequency all-fiber oscillators and amplifiers

Shi¹,

Fu²,

Li³

et al. 2023

Fiber Lasers XX: Technology and Systems

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High-power single-frequency fiber lasers have attracted great attention in the applications of high-resolution spectroscopy, long-distance coherent communication, gravitational wave detection and some other areas, due to the advantage on narrow linewidth, low noise and so on. In this paper, we systematically summarize the recent achievements of high-power singlefrequency fiber laser oscillators and amplifiers as well as performance improvement on noise suppression, linewidth narrowing, and wavelength extension. Besides, the next development of SFFLs has been prospected.

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Section: Wavelength Extensionmentioning

confidence: 99%

Recent progress of high-power single-frequency all-fiber oscillators and amplifiers

Shi¹,

Fu²,

Li³

et al. 2023

Fiber Lasers XX: Technology and Systems

Self Cite

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“…Admittedly, it is practically difficult to realize 1.7 µm oscillations owing to gain saturation and strong reabsorption in thulium-doped fibers. However, several exciting advancements have been made recently by exploiting various techniques to obtain 1.7 µm continuouswave (CW) lasers [13][14][15][16][17][18][19][20][21][22][23][24][25][26][27] . Despite these demonstrations, 1.7 µm short-pulsed thulium-doped fiber lasers have not yet been fully exploited.…”

Section: Introductionmentioning

confidence: 99%

Gain-switched watt-level thulium-doped fiber laser and amplifier operating at 1.7 μm

Xiao

Liu

et al. 2022

High Pow Laser Sci Eng

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A 1.7 µm gain-switched thulium-doped all-fiber laser with a master oscillator power amplifier (MOPA) configuration, utilizing a bandpass fiber filter and a 1550 nm erbium/ytterbium-codoped fiber MOPA, is demonstrated. The influences of pump pulses' parameters (repetition rate and pulse duration) and laser cavity structures (ring and linear) on the laser performances were experimentally investigated. To the best of our knowledge, the power quenching and drop were observed in the 1.7 µm gain-switched thulium-doped fiber lasers for the first time, resulting from the mode-locked resembling operation and nonlinear effects. Moreover, the fiber ring-cavity laser was more stable than the linear-cavity laser in the time domain and power. Finally, a laser with a maximum average power of 1.687 W, a slope efficiency of 19.7%, a single pulse energy of 16.87 μJ, a pulse width of 425 ns, a repetition rate of 100 kHz, and a peak power of 39.69 W was obtained.

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“…As one of the effective schemes to broaden the communication channel, 2 µm band optical technologies have become a research hotspot in recent years [1][2][3][4]. Single-longitudinal-mode (SLM) Thulium-doped ring cavity fiber laser has the advantages of high output power and no spatial hole burning compared with common distributed feedback (DFB) laser and distributed Bragg reflector (DBR) laser [5,6]. Based on its excellent SLM oscillation and narrow linewidth characteristics [7][8][9], SLM Thulium-doped fiber lasers are preferred light source for many applications, such as optical measurement [10], coherent light communication [11] and optical fiber sensing [12].…”

Section: Introductionmentioning

confidence: 99%

Single-Longitudinal-Mode Thulium-Doped Fiber Laser With Sub-kHz Linewidth Based on a Triple-Coupler Double-Ring Cavity

Yan

Du³

et al. 2022

IEEE Access

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We propose and demonstrate a stable single-longitudinal mode (SLM) thulium-doped fiber laser (TDFL) with a Fabry-Pé rot (F-P) fiber Bragg grating (FBG) filter and a triple-coupler based doublering cavity (TC-DRC) filter. For the first time, this structure of TC-DRC filter is used to select a single mode from dense longitudinal-modes in a ring cavity TDFL. The design and fabricate methods of TC-DRC filter are revealed and the principle of SLM selection is also analyzed in detail. The experimental results demonstrated the good performance of the proposed filter. The central wavelength of proposed TDFL is 2049.49 nm and its OSNR is higher than 35 dB. There is no obvious wavelength drift during the test, and the power fluctuation is less 0.5 dB. The SLM operation is verified through the self-homodyne method, this laser can be stably maintained in a SLM state after operating for one hour under laboratory condition. In addition, the linewidth is measured less than 10 kHz based on the phase noise demodulation method.

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Watt-level 1.7-μm single-frequency thulium-doped fiber oscillator

Cited by 37 publications

References 26 publications

Recent progress of high-power single-frequency all-fiber oscillators and amplifiers

Recent progress of high-power single-frequency all-fiber oscillators and amplifiers

Gain-switched watt-level thulium-doped fiber laser and amplifier operating at 1.7 μm

Single-Longitudinal-Mode Thulium-Doped Fiber Laser With Sub-kHz Linewidth Based on a Triple-Coupler Double-Ring Cavity

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