Random distributed feedback fiber laser at 21  μm

Jin, Xiaoxi; Lou, Zhaokai; Zhang, Hanwei; Xu, Jiangming; Zhang, Pu; Liu, Zejin

doi:10.1364/ol.41.004923

Cited by 32 publications

(12 citation statements)

References 22 publications

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“…wavelength exploring [18,19] and so on [3]. The novel application avenues of RFLs are also attempted in wide areas, such as frequency doubling [20], mid-infrared laser generation [21], and supercontinuum generation [22].…”

Section: Introductionmentioning

confidence: 99%

Incoherently pumped high-power linearly-polarized single-mode random fiber laser: experimental investigations and theoretical prospects

Xu¹,

Lou²,

Ye³

et al. 2017

Opt. Express

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We present a hundred-watt-level linearly-polarized random fiber laser (RFL) pumped by incoherent broadband amplified spontaneous emission (ASE) source and prospect the power scaling potential theoretically. The RFL employs half-opened cavity structure which is composed by a section of 330 m polarization maintained (PM) passive fiber and two PM high reflectivity fiber Bragg gratings. The 2nd order Stokes light centered at 1178 nm reaches the pump limited maximal power of 100.7 W with a full width at half-maximum linewidth of 2.58 nm and polarization extinction ratio of 23.5 dB. The corresponding ultimate quantum efficiency of pump to 2nd order Stokes light is 86.43%. To the best of our knowledge, this is the first demonstration of linearly-polarized high-order RFL with hundred-watt output power. Furthermore, the theoretical investigation indicates that 300 W-level linearly-polarized single-mode 1st order Stokes light can be obtained from incoherently pumped RFL with 100 m PM passive fiber.

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Section: Introductionmentioning

confidence: 99%

Incoherently pumped high-power linearly-polarized single-mode random fiber laser: experimental investigations and theoretical prospects

Xu¹,

Lou²,

Ye³

et al. 2017

Opt. Express

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“…Email: zhoupu203@163.com (P. Zhou), zhanghanwei100@163.com (H. Zhang) laser. Raman fiber laser has unique properties such as the broad gain spectrum and the wavelength versatility, which have been demonstrated in a large variety of wavelength bands [11][12][13][14][15][16][17][18][19][20][21] .…”

Section: Introductionmentioning

confidence: 99%

Toward high-power nonlinear fiber amplifier

Zhang

et al. 2018

High Pow Laser Sci Eng

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Stimulated Raman scattering (SRS) effect is considered to be one of the main obstacles for power scaling in general-type fiber lasers. Different from previous techniques that aim at suppressing SRS, nonlinear fiber amplifier (NFA), which manipulates and employs the SRS for power scaling in rare-earth-doped fiber, is under intensive research in recent years. In this paper, the authors will present an all-round study on this new kind of high-power fiber amplifier. A theoretical model is proposed based on the rate equation and amplified spontaneous emission (ASE), with random noise taken into account. By numerical solving of the theoretical model, the power scaling potential, heat analysis and advantages in suppressing the undesired backscattering light are quantificationally analyzed for the first time. Then two different types of high-power NFAs are demonstrated individually. Firstly, a laser diode pumped NFA has reached kilowatt output power, and the results agree well with theoretical predictions. Secondly, a tandem-pumped NFA is proposed for the first time and validated experimentally, in which 1.5 kW output power has been achieved. The authors also briefly discuss several new issues relating to the complex nonlinear dynamics that occur in high-power NFAs, which might be interesting topics for future endeavors.

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“…A random fiber laser (RFL), whose operation is based on the extremely weak Rayleigh scattering (RS) provided random distributed feedback (RDFB) and Raman gain in a section of passive fiber, has attracted increasing attention in the past decades for its special features of cavity-free, mode-free, and structural simplicity, and for its application potential in telecommunication and distributed sensing [1][2][3][4]. The recent developments of RFL mainly focus on the power scaling [5][6][7], polarization operating [8,9], wavelength tuning [10,11], linewidth narrowing [12][13][14], spectral coverage extending [15,16], application for frequency doubling [17], mid-infrared light source pumping [18,19], and so on [4].…”

Section: Introductionmentioning

confidence: 99%

Passively spatiotemporal gain-modulation-induced stable pulsing operation of a random fiber laser

Liu

et al. 2017

Photon. Res.

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Unlike a traditional fiber laser with a defined resonant cavity, a random fiber laser (RFL), whose operation is based on distributed feedback and gain via Rayleigh scattering (RS) and stimulated Raman scattering in a long passive fiber, has fundamental scientific challenges in pulsing operation for its remarkable cavity-free feature. For the time being, stable pulsed RFL utilizing a passive method has not been reported. Here, we propose and experimentally realize the passive spatiotemporal gain-modulation-induced stable pulsing operation of counterpumped RFL. Thanks to the good temporal stability of an employed pumping amplified spontaneous emission source and the superiority of this pulse generation scheme, a stable and regular pulse train can be obtained. Furthermore, the pump hysteresis and bistability phenomena with the generation of high-order Stokes light is presented, and the dynamics of pulsing operation is discussed after the theoretical investigation of the counterpumped RFL. This work extends our comprehension of temporal property of RFL and paves an effective novel avenue for the exploration of pulsed RFL with structural simplicity, low cost, and stable output.

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Random distributed feedback fiber laser at 21 μm

Cited by 32 publications

References 22 publications

Incoherently pumped high-power linearly-polarized single-mode random fiber laser: experimental investigations and theoretical prospects

Incoherently pumped high-power linearly-polarized single-mode random fiber laser: experimental investigations and theoretical prospects

Toward high-power nonlinear fiber amplifier

Passively spatiotemporal gain-modulation-induced stable pulsing operation of a random fiber laser

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