Pre-Chirp-Managed Adiabatic Soliton Compression in Pressure-Gradient Hollow-Core Fibers

Chen, Runzhi; Shi, Zhuo; Chang, Guoqing

doi:10.3390/photonics8090357

Cited by 4 publications

(2 citation statements)

References 41 publications

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“…Moreover, it plays an important role in the SC process, in particular in terms of its value and sign. For instance, in the standard technique of SC with normal GVD influence, near-transform-limited rectangular and parabolic pulses are generated in the regime of optimum compression [17][18][19][20]. On the other hand, the combination of anomalous GVD and positive cubic nonlinearity allows for having SC in a single medium, such as a fiber.…”

Section: Introductionmentioning

confidence: 99%

“…This approach to SC is the spectral analogue of adiabatic soliton compression (ASC), which allows reaching chirp-free pulse compression without applying high-order soliton compression. In particular, the authors of [20] achieved pulse compression at 2 µm using a two-stage APC technique, reducing the pulse duration from 130 fs to 15 fs. In this context, a gas-filled pressure-gradient hollow-core fiber is employed to mitigate pedestal effects and improve the quality of the compressed pulse.…”

Section: Introductionmentioning

confidence: 99%

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Spectral Self-Compression of Chirp-Free Pulses in Anomalously Dispersive Optical Fibers

Sukiasyan,

Avetisyan,

Kutuzyan

2023

Photonics

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In this work, we demonstrated, both experimentally and numerically, the existence of a chirp-free pulse propagation regime within a standard single-mode fiber. We found numerically that the pulse spectrum can undergo self-compression by more than a hundredfold, resulting in the creation of a spectrally limited pulse. In this regime, we experimentally achieved a 5× spectral self-compression, reducing the spectral width from 75 nm to 15 nm within the 1.3–1.5 μm spectral range. This was achieved with a standard telecommunication fiber with constant dispersion.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Spectral Self-Compression of Chirp-Free Pulses in Anomalously Dispersive Optical Fibers

Sukiasyan,

Avetisyan,

Kutuzyan

2023

Photonics

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Optimization of pulse self-compression in hollow capillary fibers using decreasing pressure gradients

2022

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The improvement of techniques for the generation of near-infrared (NIR) few-cycle pulses is paving the way for new scenarios in time-resolved spectroscopy and the generation of ultrashort extreme-ultraviolet pulses through high-harmonic generation. In this work, we numerically study how to optimize the self-compression of NIR pulses using decreasing pressure gradients in hollow capillary fibers (HCFs). We identify a moderate nonlinear regime in which sub-cycle pulses are obtained with very good temporal quality from an input 30 fs pulse centered at a 800 nm wavelength and coupled as the fundamental mode of an argon-filled HCF fully evacuated at the output end. Surprisingly, we observe that there is a relatively broad region of parameters for which the optimum self-compression takes place, defined by a simple relation between the input pulse energy and the initial gas pressure.

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WITHDRAWN: Research on the compression of similariton laser beam based on Dispersion-decreasing Fiber

Zhang

Pang

et al. 2022

Preprint

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The interaction and compression of the similariton beam generated in a mode-locked similariton laser system and compressed in a DDF (dispersion-decreasing fiber) with negative dispersion is investigated in this paper. First, a quality factor R is established to evaluate the quality of compressed similariton beams to design optimum tapered DDF. The result shows that the hyperbolically tapered DDF can achieve a best R compared to the linearly tapered DDF, exponentially tapered DDF, Gaussian tapered DDF, cosinoidally tapered DDF and logarithmically tapered DDF. Then, a pedestal energy ratio PE and a compression quality parameter Q are further established to evaluate the quality of compressed output beams considering the pulses with and without interaction by adjusting the time-delay q0 between the pulse pairs in a hyperbolically tapered DDF. Finally, we obtain the optimum compressed pulse pair both considering q0 = 4ps and q0 = 2.6ps, the pedestal energy ratios are 3.0048% and 13.4306%, maximum compression quality parameters are 454.3059 and 293.1326, the corresponding FWHM and peak power are 177.3fs and 302.2695W, 189.7fs and 249.4017W, respectively, demonstrating efficient and high-quality similariton beam compression.

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Pre-Chirp-Managed Adiabatic Soliton Compression in Pressure-Gradient Hollow-Core Fibers

Cited by 4 publications

References 41 publications

Spectral Self-Compression of Chirp-Free Pulses in Anomalously Dispersive Optical Fibers

Spectral Self-Compression of Chirp-Free Pulses in Anomalously Dispersive Optical Fibers

Optimization of pulse self-compression in hollow capillary fibers using decreasing pressure gradients

WITHDRAWN: Research on the compression of similariton laser beam based on Dispersion-decreasing Fiber

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