Study of a mode-locked erbium-doped frequency-shifted-feedback fiber laser incorporating a broad bandpass filter: Experimental results

Vazquez-Zuniga, Luis Alonso; Jeong, Yoonchan

doi:10.1016/j.optcom.2013.05.038

Cited by 10 publications

(11 citation statements)

References 24 publications

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“…This hysteresis phenomenon continued and faded until the pump power fall below the mode-locking threshold. This hysteresis phenomenon had been demonstrated in many other passively mode-locked fibre lasers, including Er-doped frequency shifted feedback lasers 21 , and they were based on the same mechanism with the hysteresis phenomenon of the harmonic mode locking order versus the pump power in the harmonically mode-locked fibre laser.…”

Section: Resultsmentioning

confidence: 64%

“…Beside the common mode locking techniques mentioned above, there is another intriguing technique can be exploited to initial mode-locking, which is called frequency shifted feedback (FSF). Pulse formation in FSF lasers was firstly reported by Kowalski et al 8 , and has previously been studied in Er-doped and Yb-doped fibre lasers 9 10 11 12 13 14 15 16 17 18 19 20 21 . The key component of the FSF mode locked fibre laser is an intra-cavity frequency shifter, which is typically also an unmodulated acousto-optical modulator (AOM), which is in charge of transferring energy among different laser resonant frequencies.…”

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confidence: 94%

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Diversified pulse generation from frequency shifted feedback Tm-doped fibre lasers

Chen

Jiang

et al. 2016

Sci Rep

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Pulsed fibre lasers operating in the eye-safe 2 μm spectral region have numerous potential applications in areas such as remote sensing, medicine, mid-infrared frequency conversion, and free-space communication. Here, for the first time, we demonstrate versatile 2 μm ps-ns pulses generation from Tm-based fibre lasers based on frequency shifted feedback and provide a comprehensive report of their special behaviors. The lasers are featured with elegant construction and the unparalleled capacity of generating versatile pulses. The self-starting mode-locking is initiated by an intra-cavity acousto-optical frequency shifter. Diversified mode-locked pulse dynamics were observed by altering the pump power, intra-cavity polarization state and cavity structure, including as short as 8 ps single pulse sequence, pulse bundle state and up to 12 nJ, 3 ns nanosecond rectangular pulse. A reflective nonlinear optical loop mirror was introduced to successfully shorten the pulses from 24 ps to 8 ps. Beside the mode-locking operation, flexible Q-switching and Q-switched mode-locking operation can also be readily achieved in the same cavity. Up to 78 μJ high energy nanosecond pulse can be generated in this regime. Several intriguing pulse dynamics are characterized and discussed.

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Section: Resultsmentioning

confidence: 64%

mentioning

confidence: 94%

Diversified pulse generation from frequency shifted feedback Tm-doped fibre lasers

Chen

Jiang

et al. 2016

Sci Rep

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“…More recent work looking at the properties of FSF lasers can be found e.g. for fiber lasers doped with Erbium [25,26] or Thulium [27], or for semiconductor lasers in [28,29].…”

Section: The Fsf Laser Conceptmentioning

confidence: 99%

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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“…FSF laser radiation spectral band can be tuned over a fairly wide band by changing the FSL parameters. 27,28 Even more interesting feature is that for a certain set of operation parameters, despite the optical modes absence, it is possible to implement an operation mode similar to the mode-locking regime in conventional lasers, which, by analogy, is called the mode-locking regime. 25,29,30 In this regime the FSF laser output signal is the sequence of short pulses with a repetition rate determined by the time delay in the FSL.…”

Section: Introductionmentioning

confidence: 99%

Dual optical frequency combs generation with frequency-shifted feedback laser, method, and applications

Mantsevich,

Kostyleva,

Khorkin

2023

Holography, Diffractive Optics, and Applications XIII

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Study of a mode-locked erbium-doped frequency-shifted-feedback fiber laser incorporating a broad bandpass filter: Experimental results

Cited by 10 publications

References 24 publications

Diversified pulse generation from frequency shifted feedback Tm-doped fibre lasers

Diversified pulse generation from frequency shifted feedback Tm-doped fibre lasers

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

Dual optical frequency combs generation with frequency-shifted feedback laser, method, and applications

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