Low threshold 2^nd-order random lasing of a fiber laser with a half-opened cavity

Zhang, Wei Li; Rao, Yu; Zhu, Jun; Wang, Zinan; Jia, Xin-Hong

doi:10.1364/oe.20.014400

Cited by 139 publications

(79 citation statements)

References 18 publications

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“…Due to its unique features, RDFL has found a large variety of application potentials, such as telecom and remote sensing [19][20][21]. However, most of RDFLs have relatively broad spectra (several nanometers).…”

Section: Introductionmentioning

confidence: 99%

Powerful narrow linewidth random fiber laser

Zhang

et al. 2016

Photonic Sens

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Abstract:In this paper, we demonstrate a narrow linewidth random fiber laser, which employs a tunable pump laser to select the operating wavelength for efficiency optimization, a narrow-band fiber Bragg grating (FBG) and a section of single mode fiber to construct a half-open cavity, and a circulator to separate pump light input and random lasing output. Spectral linewidth down to 42.31 GHz is achieved through filtering by the FBG. When 8.97 W pump light centered at the optimized wavelength 1036.5 nm is launched into the half-open cavity, 1081.4 nm random lasing with the maximum output power of 2.15 W is achieved, which is more powerful than the previous reported results.

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Section: Introductionmentioning

confidence: 99%

Powerful narrow linewidth random fiber laser

Zhang

et al. 2016

Photonic Sens

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“…Various aspects of RFL have been studied in recent years. RFL has demonstrated to be tunable [14], multi-wavelength [15][16][17][18], narrow bandwidth [19], cascaded operation to generate high order Stokes wave [20][21][22][23] and high output power [24,25].. However, up till now, there are still a lot of open questions regarding the physics of random lasing in fibers.…”

Section: Introductionmentioning

confidence: 99%

Random distributed feedback Raman fiber laser with polarized pumping

Churkin

Vatnik

et al. 2014

Laser Phys. Lett.

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Abstract：In this paper, the polarization properties of random fiber laser operating via Raman gain and random distributed feedback owing to Rayleigh scattering is investigated for the first time. Using polarized pump, the partially polarized generation is obtained with a generation spectrum exhibiting descrete narrow spectral features contrary to the smooth spectrum observed for the unpolarized pump. The threshold, output power, degree of polarization (DOP) and the state of polarization (SOP) of the lasing can be significantly influenced by the SOP of the pump. Fine narrow spectral components are also sensitive to the SOP of the pump wave. Furthermore, we found that random lasing's longitudinal power distribution is different in the case of polarized and unpolarized pumpoing that results in considerable reduction of the generation slope efficiency for the polarized radiation. Our results indicates that polarization effects plays an important role in the performance of the random fiber laser. This work improves the understanding of the physics of random lasing in fibers and makes a step forward towards the establishment of the vector model of random fiber lasers.

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“…Up to date, a number of different schemes of random DFB fiber lasers were demonstrated [11][12][13][14][15][16][17][18][19][20][21][22][23][24][25][26] . Namely, random DFB fiber lasers can operate in different spectral bands 12,13 , emit higher order Stokes waves [12][13][14] , be tunable 22,23 and multiwavelength 15,19,21 .…”

Section: Introductionmentioning

confidence: 99%

Modeling of the spectrum in a random distributed feedback fiber laser within the power balance modes

Vatnik

Churkin

2014

SPIE Proceedings

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The simplest model for a description of the random distributed feedback (RDFB) Raman fiber laser is a power balance model describing the evolution of the intensities of the waves over the fiber length. The model predicts well the power performances of the RDFB fiber laser including the generation threshold, the output power and pump and generation wave intensity distributions along the fiber. In the present work, we extend the power balance model and modify equations in such a way that they describe now frequency dependent spectral power density instead of integral over the spectrum intensities. We calculate the generation spectrum by using the depleted pump wave longitudinal distribution derived from the conventional power balance model. We found the spectral balance model to be sufficient to account for the spectral narrowing in the RDFB laser above the threshold of the generation.

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Low threshold 2^nd-order random lasing of a fiber laser with a half-opened cavity

Cited by 139 publications

References 18 publications

Powerful narrow linewidth random fiber laser

Powerful narrow linewidth random fiber laser

Random distributed feedback Raman fiber laser with polarized pumping

Modeling of the spectrum in a random distributed feedback fiber laser within the power balance modes

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