Power optimization of random distributed feedback fiber lasers

Vatnik, Ilya D.; Churkin, Dmitry V.; Babin, Sergey A.

doi:10.1364/oe.20.028033

Cited by 83 publications

(60 citation statements)

References 29 publications

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“…Above the threshold, the residual pump power at the laser output is decreased down to zero value, whereas the generated Stokes wave power at 1308 nm reaches the value of =7.3 W at the input pump power =11 W. To prove the results, we have performed numeric simulation based on power balance model described in [2,7], and found it to be in good agreement with experiment.…”

Section: Experiments and Discussionmentioning

confidence: 63%

Random distributed feedback fiber laser of ultimate efficiency

et al. 2014

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Section: Experiments and Discussionmentioning

confidence: 63%

Random distributed feedback fiber laser of ultimate efficiency

et al. 2014

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“…It was proved that power balance model describes well distributions of the generated power 26,31 . Note that in the model (1) the generation wave is assumed to be a single-frequency radiation having a wavelength corresponding to the maximum Raman gain.…”

Section: Spectral Balance Modelmentioning

confidence: 97%

“…The simplest model is the power balance model 10,26 which describes well the average power performances such as the generation threshold 10 , the output power value, the longitudinal distribution of the power 26 and can be used to perform a laser optimization 31 . To deal with spectral and temporal properties of the laser radiation, NLSE-based model usually used 32 .…”

Section: Introductionmentioning

confidence: 99%

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

Vatnik

Churkin

2014

Laser Sources and Applications II

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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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“…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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Power optimization of random distributed feedback fiber lasers

Cited by 83 publications

References 29 publications

Random distributed feedback fiber laser of ultimate efficiency

Random distributed feedback fiber laser of ultimate efficiency

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

Random distributed feedback Raman fiber laser with polarized pumping

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