Noise-like pulse generation and amplification from soliton pulses

Turnalı, Ahmet; Xu, Shutao; Sander, Michelle Y.

doi:10.1364/oe.453946

Cited by 14 publications

(4 citation statements)

References 44 publications

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“…Under strong pumping, as the pump power increases, the nonlinear effect is enhanced and the spectrum is gradually broadened (Figure 4c). [36,37] The 20 dB spectral bandwidth reaches ≈77 nm initially. With increasing pump power, the maximum spectral bandwidth reaches ≈142 nm (Figure S6a, Supporting Information).…”

Section: All-fiber High-power Stml Oscillatorsmentioning

confidence: 99%

Investigation of High‐Power Spatiotemporal Mode‐Locking with High Beam Quality

Zhang

Peng

et al. 2023

Laser & Photonics Reviews

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The developed spatiotemporal mode‐locked (STML) laser has emerged as an effective platform for investigating high‐dimensional nonlinear spatiotemporal dynamics. Additionally, it offers a novel avenue for the design of fiber oscillators capable of operating at high power levels. At present, the focus of STML laser research primarily revolves around this aspect. However, considering practical applications, there is a strong desire to conceive a simple all‐fiber STML oscillator with both high beam quality and high power. In this study, an all‐fiber, high‐power STML oscillator based on multimode fibers is constructed and investigated. By manipulating the pump power and the polarization state, the laser could operate in a dissipative soliton or noise‐like pulse regime, both with average output powers of two operation states reaching the Watt level. Simultaneously, high‐quality output beam profiles are observed in both operation states. To the best of knowledge, this is the first demonstration of high‐power spatiotemporal mode‐locking with high beam quality. The study holds great benefits for advancing the investigations of compact all‐fiber STML lasers which deliver high‐power outputs with superior beam quality and ultimately propels the application of STML lasers. Furthermore, this study contributes to the understanding of the behavior of STML lasers with high power.

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Section: All-fiber High-power Stml Oscillatorsmentioning

confidence: 99%

Investigation of High‐Power Spatiotemporal Mode‐Locking with High Beam Quality

Zhang

Peng

et al. 2023

Laser & Photonics Reviews

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“…The inverse process is equally interesting, i.e. efficient transformation of conventional unstructured pulses into noise-like ones [51]. Development of effective methods of conversion from sub-pulse packets into 'normal' pulses and vice versa is important for full realisation of the potential possessed by noise-like pulses…”

Section: Conversion Of Noise-like Pulses Into 'Conventional' Ones And...mentioning

confidence: 99%

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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“…Recently, it has been demonstrated that NLPs can be generated externally to a laser cavity [14][15][16][17]. For example, Stokes waves NLPs that have a wavepacket width of 3.7 ps, an average temporal width of 14.7 fs for the inner structures, and an average power of 5 W are generated by launching optical pulses into a fiber amplifier with a positive GVD [17].…”

Section: Introductionmentioning

confidence: 99%

“…The Stokes waves NLPs are generated due to intrapulse SRS and spontaneously scattered noise. In addition, NLPs at 1.89 µm wavelength that have a temporal width of 38.11 ps for the wavepacket and an average temporal duration of 150 fs for the inner structures are generated by amplifying the output pulses from a highly nonlinear fiber [14]. It is also found that NLPs can be generated through a fiber amplifier that consists of a single-mode fiber (SMF) with a negative GVD [1,15].…”

Section: Introductionmentioning

confidence: 99%

Noise-like pulse generation by amplified well-defined pulse in an optical fiber with negative group velocity dispersion

Chang,

Liu

2024

Laser Phys. Lett.

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We experimentally and numerically demonstrate that noise-like pulses (NLPs) can be generated by pumping well-defined pulses (WDPs) into an optical fiber amplifier at a wavelength in the region of negative group velocity dispersion. Through investigating the evolution of the optical pulses, it is realized that the output pulses consist of NLPs at the pump wavelength and split solitons at Stokes wavelengths, due to intrapulse Raman scattering followed by the process of soliton fission. Such process of pulse breakup results in the generation of sub-pulses that have peak powers much higher than the unbroken WDPs have, enabling WDPs to strongly induce nonlinear effects. This finding resolves the discrepancy between the experiment and simulation results of supercontinuum generation by using picosecond WDPs in previous research.

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Noise-like pulse generation and amplification from soliton pulses

Cited by 14 publications

References 44 publications

Investigation of High‐Power Spatiotemporal Mode‐Locking with High Beam Quality

Investigation of High‐Power Spatiotemporal Mode‐Locking with High Beam Quality

Incoherent laser

Noise-like pulse generation by amplified well-defined pulse in an optical fiber with negative group velocity dispersion

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