Actively mode-locked Raman fiber laser

Yang, Xuezong; Zhang, Lei; Jiang, Huawei; Fan, Tingwei; Feng, Yang

doi:10.1364/oe.23.019831

Cited by 33 publications

(11 citation statements)

References 15 publications

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“…Ultrafast Raman fiber lasers with continuous-wave (CW) pumps and various mode-locking techniques have been investigated, including passive methods with saturable absorbers [6,7] and equivalent saturable absorbers [8,9], and active ones with intra-cavity modulators [10] and hybrid mode-locking techniques [11]. As the rare-earth-doped ones, ultrafast Raman fiber lasers are also robust and compact.…”

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confidence: 99%

Raman dissipative soliton fiber laser pumped by an ASE source

et al. 2017

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The mode locking of a Raman fiber laser with an amplified spontaneous emission (ASE) pump source is investigated for performance improvement. Raman dissipative solitons with a compressed pulse duration of 1.05 ps at a repetition rate of 2.47 MHz are generated by utilizing nonlinear polarization rotation and all-fiber Lyot filter. A signal-to-noise ratio as high as 85 dB is measured in a radio-frequency spectrum, which suggests excellent temporal stability. Multiple-pulse operation with unique random static distribution is observed for the first time, to the best of our knowledge, at higher pump power in mode-locked Raman fiber lasers.

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confidence: 99%

Raman dissipative soliton fiber laser pumped by an ASE source

et al. 2017

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“…Like conventional rare-earth doped ultrafast fiber lasers, ultrafast Raman pulses can also be obtained by mode-locking. In the study of active mode-locked Raman fiber lasers, acousto-optic modulator was used to offer periodic modulation in a Raman fiber oscillator, in which Raman pulses with duration of few nanoseconds was achieved [28]. The output pulse duration can be optimized to tens of picoseconds by combining with passive mode-locking [29].…”

Section: Mode-locked 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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“…[6][7][8][9] Thus, Raman fiber lasers emitting ultrafast pulses are of great interest. Various modelocking techniques have been investigated, including passive methods utilizing semiconductor saturable absorption mirror, [10] graphene, [11] carbon nanotube, [12] nonlinear loop mirror, [13] and nonlinear polarization rotation [14] etc., active one with an intracavity modulator [15] and hybrid mode-locking technique. [16] However, the performances were worse than the rare earth doped counterparts.…”

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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Actively mode-locked Raman fiber laser

Cited by 33 publications

References 15 publications

Raman dissipative soliton fiber laser pumped by an ASE source

Raman dissipative soliton fiber laser pumped by an ASE source

Ultrafast Raman fiber laser: a review and prospect

Ultrafast Raman fiber Laser with Random Distributed Feedback

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