An Experimental Study of a Synchronously Pumped Fibre Raman Oscillator

Smith, K.; Kean, P.N.; Crust, D.W.; Sibbett, W.

doi:10.1080/09500348714551111

Cited by 21 publications

(4 citation statements)

References 6 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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“…Pulse pumping is a method to improve the efficiency for the nonlinear nature of stimulated Raman scattering (SRS) . Recently, a Raman fiber laser pumped by a picosecond fiber laser demonstrated a direct out power of 0.76 W with a conversion efficiency as high as 88% and a pulse width as short as 147 fs after compression .…”

Section: Introductionmentioning

confidence: 99%

Ultrafast Raman fiber Laser with Random Distributed Feedback

Pan

Zhang

Jiang

et al. 2018

Laser & Photonics Reviews

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Ultrafast Raman fiber lasers are wavelength‐agile light sources for various scientific and medical applications. Pulse pumping is an efficient way to generate a high power ultrafast Raman fiber laser, which however requires real‐time synchronization between the pump pulses and laser cavity. A pulse pumped Raman fiber laser with random distributed feedback is investigated. Under repetitive pulse pumping, compound cavities based on distributed Rayleigh scattering are formed automatically to synchronize with the pump pulse train. In a proof of principle experiment, self‐synchronization is observed and a stable picosecond pulsed random laser is generated at 1120 nm with an average power of 170 mW. Raman gain and random distributed feedback are spatially separated in the present pulse pumped laser configuration. This allows a direct characterization of the random distributed feedback and a comparison between random lasing and amplified spontaneous emission, which is not possible in previous continuous wave pumped random Raman fiber lasers.

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“…For efficient Raman conversion, the Stokes radiation component is amplified in a multi-pass resonant cavity with a stretch of phosphosilicate fibre between fibre Bragg grating mirrors. In pulsed operation, efficient Raman conversion is achieved with synchronous pumping [6], in which pumping pulses are synchronised with Stokes pulses of the Raman laser circulating within its cavity. 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.…”

Section: Introductionmentioning

confidence: 99%

“…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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An Experimental Study of a Synchronously Pumped Fibre Raman Oscillator

Cited by 21 publications

References 6 publications

Ultrafast Raman fiber laser: a review and prospect

Ultrafast Raman fiber laser: a review and prospect

Ultrafast Raman fiber Laser with Random Distributed Feedback

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

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