Actively mode-locked all-fiber laser by 5 MHz transmittance modulation of an acousto-optic tunable bandpass filter

Bello-Jiménez, M.; Hernández-Escobar, E.; Camarillo-Avilés, A.; Pottiez, O.; Dı́ez, A.; Andrés, Miguel V.

doi:10.1088/1612-202x/aac9d8

Cited by 13 publications

(6 citation statements)

References 25 publications

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“…The modulator consists on the same experimental arrangement described in Refs. [31,32]. Here, and for reasons of clarity, only the main transmission characteristics are described.…”

Section: Methodsmentioning

confidence: 99%

“…A schematic view of the AOM and its operation principle is shown in figure 1(b). The modulator consists on the same experimental arrangement described in [30,31]. Here, and for reasons of clarity, only the main transmission characteristics are described.…”

Section: Methodsmentioning

confidence: 99%

“…In this regard, our group has previously investigated a novel type of in-fiber acousto-optic (AO) tunable bandpass modulator, whose operation principle relies on full-acousto-optic mode re-coupling cycle induced by flexural acoustic waves. By using this AO device, Q-switched [31] and mode-locked [32] pulse operation was successfully obtained. Now, with the goal of producing a stable QML pulse emission, the modulator is operated to allow simultaneous emission of QML optical pulses.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Q-switching and mode locking pulse generation from an all-fiber ring laser by intermodal acousto-optic bandpass modulation

et al. 2018

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Q-switched and mode-locked (QML) pulse generation from an all-fiber ring laser based on intermodal acousto-optic bandpass modulation is reported. The modulator relies on full-acoustooptic mode re-coupling cycle induced by a standing flexural acoustic wave, with a transmission response that is controlled by amplitude modulation of the acoustic wave signal. The Q factor of the cavity is controlled by a rectangular pulse wave with variable frequency and duty cycle, whereas mode locking is achieved by amplitude modulation derived from a standing flexural acoustic wave. The best QML pulses were obtained at 0.5 kHz repetition rate, with a pump power of 549.2 mW, at the optical wavelength of 1568.2 nm. A maximum overall energy of 2.14 J at an average output power of 1.07 mW was achieved, corresponding to a burst of mode-locked sub-pulses of 100 ps pulse duration within a QML envelope of 3.5 s.

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“…The modulator consists on the same experimental arrangement described in Refs. [31,32]. Here, and for reasons of clarity, only the main transmission characteristics are described.…”

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Q-switching and mode locking pulse generation from an all-fiber ring laser by intermodal acousto-optic bandpass modulation

et al. 2018

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“…Our PA technique can also be implemented for any other type of wave phenomenon, for instance, using piezoelectric or acoustooptical modulators to tweak the randomness of a multimode fiber at optical frequencies. [27,28]…”

Section: Introductionmentioning

confidence: 99%

Perfect Absorption in a Disordered Medium with Programmable Meta‐Atom Inclusions

Imani

Smith

Hougne

2020

Adv Funct Materials

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Achieving the very special condition of perfect absorption (PA) in a complex scattering enclosure promises to enable a wealth of applications in secure communication, precision sensing, wireless power transfer, analog signal processing, and random lasing. Consequently, a lot of recent research effort is dedicated to proposing wave-front shaping protocols to implement coherent PA in complex scattering environments with tunable localized absorption as well as a tunable excitation frequency. Here, the conceptually different route of solely tweaking the randomness of the complex scattering environment in order to achieve PA is proposed. An experimental proof-of-concept in the microwave domain is provided where the randomness of a 3D chaotic cavity is tuned with programmable meta-atom inclusions. The achievability and extreme sensitivity of the PA condition are systematically investigated. The presented technique can impose a PA condition at over hundred distinct frequencies within a small frequency band, enabling the proposal and experimental demonstration of a concrete practical application: receiver-powered secure wireless communication in a complex scattering enclosure. The presented fundamentally new perspective on PA applies to all types of wave phenomena; the experimental results foreshadow the large potential of this novel tool for minute wave control in sensing, communication, and energy transfer.

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“…mode-locking methods according to the associated mechanisms. Active mode-locking techniques mainly employ electro-optic [7], and acousto-optic modulators [8], etc. Generally, actively mode-locked lasers suffer from bulky sizes, high costs, and weak peak power due to the presence of modulators in the cavity [9].…”

mentioning

confidence: 99%

Gold Metasurfaces as Saturable Absorbers for All-Normal-Dispersion Ytterbium-Doped Mode-Locked Fiber Laser

et al. 2022

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Optical metasurfaces, i.e., thin planar structures with subwavelength metal or dielectric unit cells, have attracted great interest due to their intriguing capabilities of shaping light in both linear and nonlinear regimes. However, their saturable absorption properties and corresponding applications have so far been rarely exploited. Here we report on passively mode-locked ytterbiumdoped fiber lasers utilizing saturable metasurfaces made of periodically arranged gold nanorods. Three 400-nm-period metasurfaces with gold nanorods of different lengths (from 210 to 240 nm) and plasmonic resonances (from 968 to 1044 nm) are fabricated and found to exhibit nonlinear absorption with decent modulation depths, facilitating the formation of mode-locking states at 1060 nm. The corresponding lasers generate typically mode-locked pulses with the duration of ∼ 62.3 ps, repetition rate of 10.33 MHz, and signal-to-noise ratio of ∼74 dB. Our experimental results demonstrate that the gold nanorod-based metasurfaces can be used as relatively broadband mode-lockers in the 1-µm-wavelength range.

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Actively mode-locked all-fiber laser by 5 MHz transmittance modulation of an acousto-optic tunable bandpass filter

Cited by 13 publications

References 25 publications

Q-switching and mode locking pulse generation from an all-fiber ring laser by intermodal acousto-optic bandpass modulation

Q-switching and mode locking pulse generation from an all-fiber ring laser by intermodal acousto-optic bandpass modulation

Perfect Absorption in a Disordered Medium with Programmable Meta‐Atom Inclusions

Gold Metasurfaces as Saturable Absorbers for All-Normal-Dispersion Ytterbium-Doped Mode-Locked Fiber Laser

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