Study of a multi-ring cavity based single-frequency fiber laser and associated thermal effects

Wang, Dongdong; Wang, Qi; Jiang, Yanfei; Li, Li

doi:10.1016/j.yofte.2020.102376

Cited by 6 publications

(2 citation statements)

References 25 publications

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“…[1][2][3][4]. In order to achieve single-frequency emission in all-fiber lasers, an ultrashort cavity [5][6][7] or longer cavity with auxiliary frequency-selecting elements [8][9][10][11] are usually used in typical schemes. Among the longer cavity schemes, a common procedure is inserting multiple passive fiber rings into a primary cavity to construct a multi-ring cavity (MRC) for expanding the longitudinal mode spacing.…”

Section: Introductionmentioning

confidence: 99%

Study of two Specific Frequency-selecting Procedures for All-fiber Single-frequency Lasers

Wang

et al. 2023

J. Phys.: Conf. Ser.

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In this paper, a detailed study of two specific frequency-selecting procedures for all-fiber single-frequency lasers is presented. The frequency-selection has been realized by using a multi-ring cavity (MRC) and double Mach-Zehnder interferometer (MZI), respectively. Firstly, the frequency-selecting principles of two procedures have been simply summarized, and the influences of the sub-ring lengths in the MRC, the optical path difference between two arms of a MZI, and the length of the primary ring cavity on single-frequency lasers have been analysed in detail. Then, the 1064.3 nm single-frequency emission with the linewidth <10 kHz in the same Ytterbium-doped fiber laser scheme has been achieved by employing two different procedures. Finally, the pump power thresholds of the MRC-based and MZI-based single-frequency fiber lasers were measured as 60 and 70 mW, the slope efficiencies were measured as 6.5 and 5.3%, and the side-mode suppression ratios were measured as 45 and 48 dB, respectively. The results reveal that the MRC-based single frequency fiber lasers have the higher energy efficiency while the MZI-based ones have the better mode stability.

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Section: Introductionmentioning

confidence: 99%

Study of two Specific Frequency-selecting Procedures for All-fiber Single-frequency Lasers

Wang

et al. 2023

J. Phys.: Conf. Ser.

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“…To achieve single-longitudinal-mode (SLM) operation from these ring lasers, additional frequencyselective devices such as filters and subcavities must be incorporated. To date, subcavities based on microspheres, [17] fiber Bragg gratings (FBGs), [18] and tapered fiber couplers [19,20] have been used. Using such coupled-cavity approaches, watt-level output in an SLM has been demonstrated; however, this has ultimately been limited due to the inability to maintain frequency control of the output.…”

Section: Introductionmentioning

confidence: 99%

2.56 W Single‐Frequency All‐Fiber Oscillator at 1720 nm

Zhang

Sheng

Zhang

et al. 2021

Advanced Photonics Research

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The saturable absorption effect of unpumped, rare earth‐doped fiber can be used as a method of achieving single‐frequency operation in fiber lasers. This effect in thulium‐doped fiber is used to achieve single‐frequency operation from an all‐fiber oscillator centered at 1720 nm. The characteristics of the saturable absorption effect are carefully studied and numerous operating regimes are identified wherein the oscillating state and frequency output characteristics of the laser can be manipulated via the injection of auxiliary pump light to the saturable absorber. A record single‐frequency output power of 2.56 W at 1720 nm is obtained; the slope efficiency is 44% and the laser linewidth is 3.3 kHz. The power scaling of the laser is only limited by the available power of the single‐mode 1570 nm pump source. Herein, new insights into methods of generating high‐power, single‐frequency emission from all‐fiber oscillators are offered.

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Single-longitudinal-mode thulium-doped fiber laser based on the composite filtering effect of multiple types narrow-bandwidth filters

Dai,

Chen,

et al. 2024

Optical Fiber Technology

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Study of a multi-ring cavity based single-frequency fiber laser and associated thermal effects

Cited by 6 publications

References 25 publications

Study of two Specific Frequency-selecting Procedures for All-fiber Single-frequency Lasers

Study of two Specific Frequency-selecting Procedures for All-fiber Single-frequency Lasers

2.56 W Single‐Frequency All‐Fiber Oscillator at 1720 nm

Single-longitudinal-mode thulium-doped fiber laser based on the composite filtering effect of multiple types narrow-bandwidth filters

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