Coherence in the output spectrum of frequency shifted feedback lasers

Yatsenko, L. P.; Shore, Bruce W.; Бергманн, К.

doi:10.1016/j.optcom.2008.10.002

Cited by 29 publications

(72 citation statements)

References 30 publications

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“…In our simulations we employed the so-called phase diffusion model (PDM), which provides a Lorentzian shaped spectrum [9], [10]. Note that the PDM does not correspond to a rigorous description of the cyclostationary spectral properties of IFSLs [11]. In fact, we used the PDM as a validating tool for simulating broadband pumps with constant power in time domain with the aim of showing that BS-FWM is still visible with broadband pumps.…”

Section: Comparison Between Numerical and Experimental Resultsmentioning

confidence: 99%

Four-Wave Mixing in Nonlinear Fiber With Two Intracavity Frequency-Shifted Laser Pumps

Krupa

Bettenzana²,

Tonello³

et al. 2012

IEEE Photon. Technol. Lett.

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Abstract-We experimentally study Bragg-type four-wave mixing frequency conversion in highly nonlinear fibers by using two independent frequency-shifted-feedback lasers. We obtain frequency conversion with partial coherent pumps when both lasers operate in the continuous-wave regime. Our experimental results compare well with numerical simulations, which take into account partial coherence of the two pumps.

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Section: Comparison Between Numerical and Experimental Resultsmentioning

confidence: 99%

Four-Wave Mixing in Nonlinear Fiber With Two Intracavity Frequency-Shifted Laser Pumps

Krupa

Bettenzana²,

Tonello³

et al. 2012

IEEE Photon. Technol. Lett.

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“…A comprehensive general theory of the FSF-laser operation was first presented in [30] followed by work with special emphasis on the coherence properties of the op-tical output [31]. Further detailed analysis of FSF-laser properties and some new applications was presented by the Grenoble group [32,33,34,35,36,37,38].…”

Section: The Fsf Laser Conceptmentioning

confidence: 99%

“…These processes are uncorrelated and intrinsically incoherent. However, the fourth-order correlation-function analysis [31], which allows the evaluation of the RF spectrum of the output intensity of a Michelson interferometer, shows that this spectrum comprises a set of doublets, whose frequencies are given by Eqs.…”

Section: Theoretical Backgroundmentioning

confidence: 99%

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Ranging with frequency-shifted feedback lasers: from $$\upmu$$ μ m-range accuracy to MHz-range measurement rate

Kim¹,

Ogurtsov²,

Bonnet³

et al. 2016

Appl. Phys. B

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We report results on ranging based on frequency shifted feedback (FSF) lasers with two different implementations: (1) An Ytterbium-fiber system for measurements in an industrial environment with accuracy of the order of 1 µm, achievable over a distance of the order of meters with potential to reach an accuracy of better than 100 nm; (2) A semiconductor laser system for a high rate of measurements with an accuracy of 2 mm @ 1 MHz or 75 µm @ 1 kHz and a limit of the accuracy of ≥ 10 µm. In both implementations, the distances information is derived from a frequency measurement.The method is therefore insensitive to detrimental influence of ambient light. For the Ytterbium-fiber system a key feature is the injection of a single frequency laser, phase modulated at variable frequency Ω, into the FSFlaser cavity. The frequency Ω max at which the detector signal is maximal yields the distance. The semiconductor FSF laser system operates without external injection seeding. In this case the key feature is frequency counting that allows convenient choice of either accuracy or speed of measurements simply by changing the duration of the interval during which the frequency is measured by counting.

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“…Without using the spectral aspect of the moving-comb model, Yatsenko et al [9] introduced a more realistic stochastic model by including frequency dependent gain and losses of an FSF laser seeded by spontaneous emission. The authors calculated that the RF spectrum of the output signal of an interferometer injected by an FSF laser exhibits doublets whose spacing is directly proportional to the path difference between the two interferometer arms.…”

Section: Aomentioning

confidence: 99%

Pulsed frequency shifted feedback laser for accurate long distance measurements: Beat order determination

Pique¹

2013

Optics Communications

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Long-distance measurements (10 m -1000 m) with an accuracy of 10 -7 is a challenge for many applications. We show that it is achievable with Frequency Shifted Feedback (FSF) laser interferometry technique, provided that the determination of the radio frequency beat order be made without ambiguity and on a time scale compatible with atmospheric applications. Using the pulsed-FSF laser that we developed for laser guide star application, we propose and test, up to 240 m, a simple method for measuring the beat order in real time. The moving-comb and Yatsenko models are also discussed. The first of these models fails to interpret our long-distance interferometry results. We show that the accuracy of long-distance measurements depends primarily on the stabilization of the acoustic frequency of the modulator.

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Coherence in the output spectrum of frequency shifted feedback lasers

Cited by 29 publications

References 30 publications

Four-Wave Mixing in Nonlinear Fiber With Two Intracavity Frequency-Shifted Laser Pumps

Four-Wave Mixing in Nonlinear Fiber With Two Intracavity Frequency-Shifted Laser Pumps

Ranging with frequency-shifted feedback lasers: from $$\upmu$$ μ m-range accuracy to MHz-range measurement rate

Pulsed frequency shifted feedback laser for accurate long distance measurements: Beat order determination

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