Cascaded random distributed feedback Raman fiber laser operating at 12 μm

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

doi:10.1364/oe.19.018486

Cited by 96 publications

(52 citation statements)

References 32 publications

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“…For the RFL with the completely open cavity and unidirectional pumping, the slope efficiency for the forward output power decreases exponentially with the fiber length, whereas the slope efficiency is almost constant over fiber length variation for the backward output power and it can reach 90% theoretically. However, the numerical study also revealed that in this configuration with short fiber length, the presence of a small reflection at fiber ends will significantly change the power distribution, lower the slope efficiency, reduce the second-order lasing threshold and appreciably deteriorate the power performance [26], [31]. Very recently, high power RFLs with short fiber length have been experimentally demonstrated [32], [33].…”

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confidence: 94%

High Power Random Fiber Laser With Short Cavity Length: Theoretical and Experimental Investigations

Wang

Fan

et al. 2015

IEEE J. Select. Topics Quantum Electron.

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In this paper, we make a comprehensive study on a highly efficient half-open cavity design for high power random fiber laser (RFL). With the theoretical analysis, we optimize the cavity's fiber length for getting higher output power within the scheme, i.e., shorter fiber length is preferred for efficiently harvesting the first order random lasing at the open end of the cavity. As the verification of the theory, we experimentally demonstrate a high output power (7 W), highly efficient (70% optical conversion efficiency) RFL working at 1140 nm, using 10 W 1090 nm laser as the pump source and only 1 km standard single-mode fiber as the distributed cavity.

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confidence: 94%

High Power Random Fiber Laser With Short Cavity Length: Theoretical and Experimental Investigations

Wang

Fan

et al. 2015

IEEE J. Select. Topics Quantum Electron.

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“…The forward propagating and backward propagating waves are detected by the optical spectrum analyzer (OSA) with a resolution of 0.01 nm and power meter from Port 1, Port 2 and Port 3. All the three output ports were performed with angle polished connectors to avoid Fresnel reflection [24].…”

Section: Methodsmentioning

confidence: 99%

Multiwavelength Brillouin-Erbium Random Fiber Laser Incorporating a Chirped Fiber Bragg Grating

Dong

Zhang

et al. 2014

IEEE J. Select. Topics Quantum Electron.

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We experimentally demonstrate a multiwavelength Brillouin-erbium random fiber laser with a linear half-open cavity, by combining Rayleigh scattering with the reflection of a chirped fiber Bragg grating. The linear half-open cavity configuration is successful in obtaining multiwavelength random fiber laser with flattened output spectra, which is verified by both about 4.3 dB peak power difference between the first and fourth channel and inconspicuous peak power discrepancy between the odd and even Stokes lines. Up to five output channels with a spacing of about 0.088 nm, a linewidth of about 0.02 nm and optical signal-to-noise ratio over 15 dB have been obtained.

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“…Due to these advantages, attentions have been paid to their applications in fiber-optic sensing and communication [3]- [5]. Also, various aspects of RFL have been studied: RFL has been designed to be narrow bandwidth [6], multiwavelength [7], [8] wavelength-tunable [9], Manuscript high power [10]- [12] and generating high order Stokes waves [13], [14]. Besides, the concept of RFL can be further developed by using Brillouin gain instead of Raman gain [15].…”

Section: Introductionmentioning

confidence: 99%

Low-Threshold, High-Efficiency Random Fiber Laser With Linear Output

Fan

Wang

Sun

et al. 2015

IEEE Photon. Technol. Lett.

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In this letter, we numerically study and experimentally achieve a low-threshold, high-efficiency random fiber laser, featuring a linear output as well. The lasing cavity incorporates a section of standard single-mode fiber and a band-selective point reflector placed at the far end of the fiber. The numerical result indicates that most energy is further pushed toward the pump side comparing with the open cavity scheme, producing a high-efficiency output. Then, we analyze the dependence of threshold and slope efficiency on cavity length and pumping wavelength. Most importantly, shorter cavity length would yield higher efficiency, and for different pumping wavelengths, there will be different cavity lengths corresponding to the lowest lasing threshold. Finally, we deliberately choose the parameters and experimentally achieve an 1145-nm random fiber laser with 7.13-W output and >90% slope efficiency (with 10-W pump), while the slope efficiency is almost constant above the 2-W lasing threshold. This letter provides a comprehensive guideline for designing such random fiber lasers with tailored performance.

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Cascaded random distributed feedback Raman fiber laser operating at 12 μm

Cited by 96 publications

References 32 publications

High Power Random Fiber Laser With Short Cavity Length: Theoretical and Experimental Investigations

High Power Random Fiber Laser With Short Cavity Length: Theoretical and Experimental Investigations

Multiwavelength Brillouin-Erbium Random Fiber Laser Incorporating a Chirped Fiber Bragg Grating

Low-Threshold, High-Efficiency Random Fiber Laser With Linear Output

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