Tunable synchronously-pumped fiber Raman laser in the visible and near-infrared exploiting MOPA-generated rectangular pump pulses

Lin, Di; Alam, Shaif-ul; Teh, P.C.; Chen, Kang Kang; Richardson, David J.

doi:10.1364/ol.36.002050

Cited by 9 publications

(3 citation statements)

References 10 publications

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“…In some early works, researchers tended to apply nanosecond pulses as the pump, in order to reduce the difficulty of synchronization [57][58][59][60][61]. Yet, it is hard to achieve few picosecond or even femtosecond Raman pulses under such long pump pulse duration.…”

Section: Synchronously-pumped Raman Fiber Lasermentioning

confidence: 99%

Ultrafast Raman fiber laser: a review and prospect

Zhou

Pan

et al. 2022

PhotoniX

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Ultrafast Raman fiber laser has been proved to be an effective method to obtain ultrafast optical pulses at special wavelength. Yet, compared with conventional rare-earth doped counterparts, it is challenging for Raman fiber lasers to generate pulses with high pulse energy and short pulse duration. Here, we review three categories of ultrafast Raman fiber laser technologies and give detailed discussions on the advantages and challenges of each. In regards to mode-locking, different saturable-absorbers-based fiber lasers are compared and their common problem resulting from long cavity length are discussed. In terms of synchronously-pumping, several approaches to match the repetition rate of pulsed pump with the length of Raman fiber cavity are discussed, while the technical complexity of each method is analyzed. Moreover, the recently developed technology termed as nonlinear optical gain modulation (NOGM) is introduced, which turns out to be a simple and quality solution to generate high-energy femtosecond pulses with wavelength agility. Compared with the others, NOGM gathers various advantages including simple structure, long-term stability, high pulse energy and short pulse duration, which may effectively promote application expansion of ultrafast Raman fiber laser in the near future.

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Section: Synchronously-pumped Raman Fiber Lasermentioning

confidence: 99%

Ultrafast Raman fiber laser: a review and prospect

Zhou

Pan

et al. 2022

PhotoniX

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“…Actually, some early studies on the wavelength conversion in visible or near-infrared region have verified that rectangular pulse was superior to promote pump energy transfer [21][22][23][24], comparing to Gaussian pump pulse. Since it offered the nearly consistent Raman gain across the temporal profile.…”

Section: Introductionmentioning

confidence: 99%

Efficient Raman pulse fiber laser pumped by a dissipative soliton resonance pulse near 2 μm

Liu¹,

Li²,

Luo³

et al. 2023

Preprint

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A high-efficiency Raman conversion from 1.987 μm to 2.177 μm is demonstrated experimentally in 45 m GeO2-doped silica fiber, adopting a dissipative soliton resonance (DSR) rectangular pulse as the pump. Over the entire spectral distribution, the spectral purity of the first-order Raman pulse is up to 96.8%, suggesting a nearly complete pump depletion before the onset of cascaded Raman shifts. The corresponding pump-to-Raman conversion efficiency of 67.4% is the highest up to date in this spectral region. Meanwhile, a large Raman pulse energy of 1.03 μJ was obtained at the repetition rate near MHz level, corresponding to 0.893 W average power. In the total output, the Raman-dominated spike has a Full Width Half Maximum (FWHM) of 1.18 ns far narrower than DSR’s pulse duration of 10.25 ns. The results indicate that DSR is a promising candidate for developing efficient Raman nanosecond pulse fiber laser in mid-infrared (MIR) region.

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“…Such synchronisation is established through adjusting the Raman laser cavity length so that the Raman laser round-trip time is a multiple of the pumping pulse period. Compared to continuously pumped fibre Raman lasers, those using synchronous pulsed pumping are still much less explored [6][7][8][9], and there is exactly one published study of such a laser in an allfibre configuration with a P 2 O 5 -doped silica fibre [10] where 3-µs pulses at 1254 nm were reported. When a fibre Raman laser is pumped with broad-spectrum pulses (i.e.…”

Section: Introductionmentioning

confidence: 99%

Synchronously pumped picosecond all-fibre Raman laser based on phosphorus-doped silica fibre

Kobtsev¹,

Kukarin²,

Kokhanovskiy³

2015

Opt. Express

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Reported for the first time is picosecond-range pulse generation in an all-fibre Raman laser based on P₂O₅-doped silica fibre. Employment of phosphor-silicate fibre made possible single-cascade spectral transformation of pumping pulses at 1084 nm into 270-ps long Raman laser pulses at 1270 nm. The highest observed fraction of the Stokes component radiation at 1270 nm in the total output of the Raman laser amounted to 30%. The identified optimal duration of the input pulses at which the amount of Stokes component radiation in a ~16-m long phosphorus-based Raman fibre converter reaches its maximum was 140-180 ps.

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Tunable synchronously-pumped fiber Raman laser in the visible and near-infrared exploiting MOPA-generated rectangular pump pulses

Cited by 9 publications

References 10 publications

Ultrafast Raman fiber laser: a review and prospect

Ultrafast Raman fiber laser: a review and prospect

Efficient Raman pulse fiber laser pumped by a dissipative soliton resonance pulse near 2 μm

Synchronously pumped picosecond all-fibre Raman laser based on phosphorus-doped silica fibre

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