Observation of 115 GHz high-order harmonic noise-like pulse in Er/Yb-doped fiber laser

Lin, Qimeng; Hou, Lei; He, Xin; Sun, Jiang; Lu, Baole; Sun, Bo; Chen, Haowei; Bai, Jintao

doi:10.1088/1612-202x/aa760a

Cited by 8 publications

(6 citation statements)

References 33 publications

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“…To date various types of NLPs have been reported such as rectangular shaped, dual/multi-wavelength NLPs, harmonic mode-locked NLPs, vector NLPs, dark NLPs, bound NLPs, Q-Switch modelocked and Q-switch harmonic mode-locked NLPs [7][8][9][10][11][12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Versatile wavelength tunable noise-like pulse generation from an erbium doped fiber laser using an intra-cavity Michelson interferometer

R¹,

Gowrishankar²,

Srivastava³

2023

Laser Phys.

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We report, versatile wavelength tunable mode locked noise-like pulses (NLP) from an erbium doped fiber ring laser, using a novel intra-cavity Michelson interferometer (MI) as a tunable filter. Our results demonstrate independent control of the central wavelength and the bandwidth using fine and coarse controls in one arm of the MI. The central wavelength is continuously tunable across the entire C-band (1530 nm to 1566 nm), while the bandwidth can be varied from 3 nm to 19.5 nm. The NLPs have a repetition rate of 1.307 MHz with pulse energies of ∼1 nJ. Additionally, harmonic mode-locked states and NLP pairs can also be produced using the same laser. On account of the adaptable output spectrum, we believe, such lasers will be useful for a variety of applications including sensing, spectroscopy and optical coherence tomography. The MI-based fiber laser can also serve as an ideal platform for gaining insight and exploring the rich dynamics of NLPs.

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Section: Introductionmentioning

confidence: 99%

Versatile wavelength tunable noise-like pulse generation from an erbium doped fiber laser using an intra-cavity Michelson interferometer

R¹,

Gowrishankar²,

Srivastava³

2023

Laser Phys.

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“…There are no characteristic fringes on the spectral profiles in the NLP state, so the interaction among multiple pulses is incoherent. When the multiple pulses are the proper condition, the high order harmonic mode locking of NLPs can also be obtained [25][26][27]. In addition, NLPs have a great advantage for forming smooth and flat supercontinuum [28][29][30], because the NLP packet is made up of many pulses with different temporal widths and peak power [21].…”

Section: Introductionmentioning

confidence: 99%

Noise-like pulses generated from a passively mode-locked fiber laser with a WS₂ saturable absorber on microfiber

Wang

Liu

et al. 2018

Laser Phys. Lett.

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We report on a noise-like pulse (NLP) generation in a mode-locked erbium-doped all-fiber laser using a WS2-deposited microfiber saturable absorber (SA). The prepared WS2 SA can serve as an excellent mode-locked and highly nonlinear device in the all-fiber laser cavity. At proper pump power and polarization states, typical NLPs can be generated. Adjusting the polarization also yields special NLPs with second-order harmonic mode-locking. For typical NLPs, 37 mW maximum output power and 8.8 nJ pulse energy are achieved at 334 mW pump power. The microfiber-based WS2 component could be a potential device for exploring nonlinear dynamics, such as NLPs.

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“…In most of these cases, the multiple wave packets display similar characteristics (duration, ampl itude), intracavity energy is distributed equally between them, and they tend to adopt a uniform distribution along the cavity, with equal spacing between them (harmonic mode locking). The number of NLPs coexisting in the cavity can be as small as 2 or 3 [27], but can also be as high as 1000 [15] or even range as tens of thousands [9,48]. In general, the formation of multiple NLPs in the laser is detrimental for applications and should be avoided, as it reduces the maximal NLP energy.…”

Section: Introductionmentioning

confidence: 99%

Numerical study of multiple noise-like pulsing in a dispersion-managed figure-eight fibre laser

Pottiez

Bracamontes-Rodríguez

Ibarra-Villalón

et al. 2018

Laser Phys.

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We study numerically noise-like pulsing in a long passively mode-locked figure-eight fibre laser with a polarization-imbalanced nonlinear optical loop mirror (NOLM) and a strong dispersion map. Contrary to the common scenario where a single noise-like pulse develops, it is found that multiple small bunches tend to form in the cavity, sharing roughly the same characteristics, which are determined by the dispersion parameters. The wave packets are subject to ample periodic variations of their duration and peak intensity as they pass through sections of opposite dispersion signs, displaying a breathing dynamics analogous to the one undergone by solitons in stretched-pulse fibre lasers. Multiple noise-like pulsing operation can be understood by considering the strong compression and corresponding intensity increase of small bunches as they travel through the NOLM, which yields higher transmission through the NOLM and thus smaller cavity losses for these small units than for larger wave packets. The present results could serve as a basis for a deeper study of the dynamics taking place in partially mode-locked fibre sources, which is particularly complex when multiple bunches of radiation coexist and interact in the cavity.

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Observation of 115 GHz high-order harmonic noise-like pulse in Er/Yb-doped fiber laser

Cited by 8 publications

References 33 publications

Versatile wavelength tunable noise-like pulse generation from an erbium doped fiber laser using an intra-cavity Michelson interferometer

Versatile wavelength tunable noise-like pulse generation from an erbium doped fiber laser using an intra-cavity Michelson interferometer

Noise-like pulses generated from a passively mode-locked fiber laser with a WS₂ saturable absorber on microfiber

Numerical study of multiple noise-like pulsing in a dispersion-managed figure-eight fibre laser

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Observation of 115 GHz high-order harmonic noise-like pulse in Er/Yb-doped fiber laser

Cited by 8 publications

References 33 publications

Versatile wavelength tunable noise-like pulse generation from an erbium doped fiber laser using an intra-cavity Michelson interferometer

Versatile wavelength tunable noise-like pulse generation from an erbium doped fiber laser using an intra-cavity Michelson interferometer

Noise-like pulses generated from a passively mode-locked fiber laser with a WS2 saturable absorber on microfiber

Numerical study of multiple noise-like pulsing in a dispersion-managed figure-eight fibre laser

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Noise-like pulses generated from a passively mode-locked fiber laser with a WS₂ saturable absorber on microfiber