A Watt-level noise-like Tm-doped fiber oscillator by nonlinear polarization rotation

Shang, Jingcheng; Feng, Jianshu; Li, Tao; Feng, Tianli; Liu, Yizhou; Zhao, Shengzhi; Zhao, Yuefeng; Song, Yuzhi

doi:10.35848/1882-0786/abf0e2

Cited by 14 publications

(3 citation statements)

References 39 publications

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“…The effect of nonlinear polarisation evolution (NPE) [15] is often used as the basis of artificial saturable absorbers [16] for generation of noise-like pulses [17][18][19][20][21][22][23]. The optical layouts of such cavities are predominantly experimental and conceptual because of indeterminate adjustment procedure of the polarisation controller(s).…”

Section: Npe Mode-lockingmentioning

confidence: 99%

“…Noise-like pulses are interesting both because of their random (or quasi-random) distribution of the field oscillation phase within the pulse and because of comparatively short duration of the pulse envelope and its components [9,10]. Aside from this, such pulses are able to sustain relatively high average radiation power [11,12] and are amenable to highly efficient nonlinear conversion [13,14]. A combination of attractive properties of noise-like pulses makes them a preferable choice for implementation of a low-coherence laser.…”

Section: Introductionmentioning

confidence: 99%

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Incoherent laser

Kobtsev¹

2022

Advanced Lasers, High-Power Lasers, and Applications XIII

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The report considers prospects of development, on the basis of fibre lasers, of an 'incoherent laser' producing noise-like pulses. The possibility is demonstrated of a radically new radiation source occupying, in terms of output properties, an intermediate place between incandescent bulb and laser. Combination in such a laser of high output beam directivity, brightness and incoherent character of the radiation is quite important in many applications where speckle patterns of the light field are an undesirable effect.

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Section: Npe Mode-lockingmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Incoherent laser

Kobtsev¹

2022

Advanced Lasers, High-Power Lasers, and Applications XIII

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“…However, owing to their complexity and high cost of production, their practicality is relatively low. Fiber saturable absorbers (FSAs), such as nonlinear multimode interference (NL-MMI) [19,20] and nonlinear polarization rotation (NPR) [21], provide more compact structures and have the advantages of low cost and long lifetime. Owing to differences in working mechanisms and designs, FSAs can be divided into two types: artificial fiber saturable absorbers (AFSAs), which include NALM, NPE, and NL-MMI; and doped fiber saturable absorbers (DFSAs).…”

Section: Introductionmentioning

confidence: 99%

Generation of Bright–Dark Pulse Pairs in the Er-Doped Mode-Locked Fiber Laser Based on Doped Fiber Saturable Absorber

Qi,

Yu,

Sun

et al. 2024

Photonics

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: This study reports new types of passive mode-locked Er-doped fiber laser (EDFL) based on a segment of doped fiber saturable absorber (DFSA) with Tm/Ho-doped fiber (THDF), Yb-doped fiber (YDF), and Er-doped fiber (EDF). By employing THDF-SA, a bright pulse sequence with a fundamental repetition rate of 17.86 MHz was obtained. In addition, various mode-locked output states, including dark pulses, dark–bright pulse pairs, bright–dark pulse pairs, and second-harmonic pulses, were obtained through polarization modulation and gain modulation, and the orthogonality of dark–bright pulses in both polarization directions was verified. Furthermore, using EDF-SA and YDF-SA, dark pulses and dark–bright pulses were obtained. A comparison of the three experiments revealed that THDF-SA effectively reduces the mode-locked threshold and improves the average output power. Compared with bright pulses, dark pulses offer several advantages such as resisting noise, increasing propagation speed, and suppressing nonlinear scattering (such as pulse-intrinsic Raman scattering); thus, the EDFL can find broad application in long-distance transmission, precision measurement, and other fields.

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Advances and Challenges of Ultrafast Fiber Lasers in 2–4 µm Mid‐Infrared Spectral Regions

Zhang,

Wu,

Guang

et al. 2023

Laser & Photonics Reviews

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Mid‐infrared (mid‐IR) ultrafast lasers are widely employed in biomedicine, molecular spectroscopy, material processing, and nonlinear optics. With the improvement of fiber gain media and other fiber optical elements, low‐cost, compact, and high‐efficiency fiber lasers open up new opportunities for 2–4 µm pulse generations, which calls for a comprehensive review of their mode‐locking mechanisms, gain media, and fiber laser system performance. This paper, beginning with an overview of pulse‐generation technologies, reviews recent progress on 2–4 µm mid‐IR ultrafast fiber lasers, including Tm3+‐, Ho3+‐doped, Tm3+/Ho3+ codoped silicate fiber 2 µm lasers, and Er3+‐, Dy3+‐doped, and Ho3+/Pr3+ codoped ZBLAN fiber 2.5–4 µm lasers. Among them, the status of 2–4 µm ultrafast fiber lasers based on 2D material passive mode‐locking is emphatically discussed. Meanwhile, the novel advances on mode‐locking and gain fibers of mid‐IR ultrafast fiber lasers are explored. Furthermore, current and prospective applications of such laser systems are also introduced in detail. This review finally summarizes challenges associated with future development of mid‐IR ultrafast fiber lasers, which provides an outlook on how to achieve more desirable laser performance (e.g., higher average power, higher pulse energy, and longer emission wavelength) that can lead to more practical uses of such lasers.

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A Watt-level noise-like Tm-doped fiber oscillator by nonlinear polarization rotation

Cited by 14 publications

References 39 publications

Incoherent laser

Incoherent laser

Generation of Bright–Dark Pulse Pairs in the Er-Doped Mode-Locked Fiber Laser Based on Doped Fiber Saturable Absorber

Advances and Challenges of Ultrafast Fiber Lasers in 2–4 µm Mid‐Infrared Spectral Regions

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