Tens of hertz narrow-linewidth laser based on stimulated Brillouin and Rayleigh scattering

Huang, Shihua; Zhu, Tao; Yin, Guolu; Lan, Tianyi; Huang, Ligang; Li, Fuhui; Bai, Yang; Qu, Dingrong; Huang, Xianbin; Qiu, Feng

doi:10.1364/ol.42.005286

Cited by 38 publications

(15 citation statements)

References 35 publications

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“…Taking into account the intrinsic Stokes laser linewidth, the Stokes laser linewidth would never go narrower beyond the quantum noise limit even if the pump laser with the linewidth tending to 0. To address this issue, a correction factor αΔv ef f B related to the effective Brillouin gain spectrum can be introduced for the derivation of the Stokes laser linewidth [28],…”

Section: Theorymentioning

confidence: 99%

“…Alternatively, distributed random feedback from fiber-optic structures with artificially introduced disorder, e.g., random fiber gratings [26], [27] were also used to overwhelm the traditional weak Rayleigh backscattering, yielding the coherent time extension of the generated laser photons with ultra-narrow linewidth. It has been demonstrated that the BRFL eventually allows a lowcost linewidth compressor with respect to a cavity-based pump laser of kHz linewidth, allowing ∼75 Hz ultra-narrow linewidth random lasing radiation with a high side-mode suppression ratio [28]. Up to now, all previous BRFLs were investigated based on a classical cavity-based pump laser, meanwhile, the impact of the pump on the linewidth compression in cascading BRFLs remains ambiguous.…”

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confidence: 99%

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Laser Linewidth Compression in Cascading Brillouin Random Fiber Lasers

et al. 2022

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Cascaded Brillouin random fiber lasers (BRFLs) with laser linewidth compression were theoretically and experimentally demonstrated. Thanks to photon-phonon coupled interplay as well as randomly distributed feedback along silica fibers, the coherent time of cascading BRFL radiation is significantly prolonged whilst the phase noise is further suppressed, albeit with a quantum-noiseinduced linewidth narrowing limit. To validate it, the linewidth narrowing ratio in BRFLs, defined as the ratio of the Brillouin pump and its sequent order of Stokes linewidth, was carried out and exhibited a dependence on the Brillouin pump linewidth, which is in good agreement with theoretical predictions. Furthermore, the relative intensity noises of cascading BRFLs were also investigated and discussed.

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Section: Theorymentioning

confidence: 99%

mentioning

confidence: 99%

Laser Linewidth Compression in Cascading Brillouin Random Fiber Lasers

et al. 2022

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“…Therefore, the laser linewidth can be adjusted by the injection power [ 13 ]. The SBS effect can realize the SLM operation due to the ultra-narrow gain range and generate an ultra-narrow laser linewidth because of the high Q value [ 14 ]. Normally, a long single-mode fiber (hundreds of meters) is necessary for exciting SBS because of the small Brillouin gain coefficient.…”

Section: Introductionmentioning

confidence: 99%

Comparison of Different Linewidth Measuring Methods for Narrow Linewidth Laser

Zheng

Luo

Wang

et al. 2022

Sensors

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We experimentally demonstrate a fiber laser with different linewidths based on self-injection locking (SIL) and the stimulated Brillouin scattering effect. Based on the homemade fiber laser, the error origin, resolution, and applicable range of delayed self-heterodyne interferometry (DSHI), self-correlation envelope linewidth detection (SCELD) and Voigt fitting are investigated numerically and experimentally. The selection of the linewidth measuring method should meet the following conclusions: an approximately Lorentzian self-heterodyne spectrum without the pedestal and high-intensity sinusoidal jitter is a prerequisite for DSHI; the SCELD needs a suitable length of delay fiber for eliminating flicker noise and dark noise of the electrical spectrum analyzer; a non-Lorentzian self-heterodyne spectrum without a pedestal is an indispensable element for Voigt fitting. According to the experimental results, the laser Lorentzian linewidth of SIL changes from 1.7 kHz to 587 Hz under different injection powers. When the Brillouin erbium fiber laser is utilized, the Lorentzian linewidth is measured to be 60 ± 5 Hz.

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“…In our previous work, we investigated Rayleigh backscattering (RBS) in different types of optical fibers and some applications of Rayleigh scattering such as narrower filter, have be attained 10,11 . Moreover, we applied the characteristic of the RBS to the field of narrow linewidth lasers, precisely for attaining deep compression of the laser linewidth 12 . In this process, the spectrum evolution (SpE) characteristics of the RBS are the fundamental approach employed to realize a compressed laser linewidth.…”

Section: Introductionmentioning

confidence: 99%

Spectrum evolution of Rayleigh backscattering in one-dimensional waveguide

Lan

Huang

et al. 2019

Opto-Electronic Advances

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Despite the tremendous awareness of Rayleigh scattering characteristics and its considerable research interest for numerous fields, no report has been documented on the dynamic characteristics of spectrum evolution (SpE) and physical law for Rayleigh scattering from a micro perspective. Herein, the dynamic characteristics of the SpE of Rayleigh scattering in a one-dimensional waveguide (ODW) is investigated based on the quantum theory and a SpE-model of Rayleigh backscattering (RBS) source is established. By means of simulation, the evolution law which represents the dynamic process of the spectrum linewidth at a state of continuous scattering is revealed, which is consistent with our previous experimental observation. Moreover, an approximate theoretical prediction of the existing relationship between the spectrum linewidth of RBS source and the transmission length in ODW is proposed, which theoretically provides the feasibility of constructing functional devices suitable to ascertain laser linewidth compression. The designed experimental scheme can be implemented provided the assumptions are fulfilled. In addition, a theoretical model of the micro-cavity structure to realize the deep compression of laser linewidth is proposed.

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Tens of hertz narrow-linewidth laser based on stimulated Brillouin and Rayleigh scattering

Cited by 38 publications

References 35 publications

Laser Linewidth Compression in Cascading Brillouin Random Fiber Lasers

Laser Linewidth Compression in Cascading Brillouin Random Fiber Lasers

Comparison of Different Linewidth Measuring Methods for Narrow Linewidth Laser

Spectrum evolution of Rayleigh backscattering in one-dimensional waveguide

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