Passively Q-switched S+/S band fiber laser with copper telluride saturable absorber

Ahmad, Harith; Azmy, Nur Fatini; Kasran, F a M; Yusoff, Norazriena; Reduan, Siti Aisyah; Bayang, Leonard; Ismail, M. F.; Zulkifli, Mohd Zamani; Thambiratnam, Kavintheran

doi:10.1088/1612-202x/aba280

Cited by 8 publications

(4 citation statements)

References 45 publications

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“…The most popular device for either mode locking or cavity finesse modulation is a nonlinear transmission element (saturable absorber) that modulates the losses in the cavity according to the light intensity. A variety of such devices has been suggested and used successfully in laser designs [7][8][9][10][11][12][13]. Passive mode locking produces pulses with durations from a few picoseconds to a few femtoseconds [14] with repetition rates typically in the mega-to gigahertz range, depending on the cavity round-trip time.…”

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confidence: 99%

Concurrent Passive Mode-Locked and Self- Q -Switched Operation in Laser Systems

Guo

Cundiff

Soto-Crespo³

et al. 2021

Phys. Rev. Lett.

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Concurrent passive mode-locked and self-Q-switched operation of laser devices is modeled using the complex cubic-quintic Ginzburg-Landau equation. Experimental observations use a passively mode-locked fiber ring laser with a waveguide array as a fast saturable absorber. The shape of each individual self-Qswitched pulse and the periodic trains of pairs of such pulses are in a good qualitative agreement with the numerical results.

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confidence: 99%

Concurrent Passive Mode-Locked and Self- Q -Switched Operation in Laser Systems

Guo

Cundiff

Soto-Crespo³

et al. 2021

Phys. Rev. Lett.

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“…The nonlinear characteristics of the SA were identified by the twin detector measurement method with an ultrashort pulse fiber laser as an input source with 573.2 fs pulse duration and repetition rate of 18.88 MHz at 1565 nm wavelength. The measured data of absorption at different input intensities for the Psf membrane ZnO TiO 2 SA fitted with the following saturation model equation [43]:…”

Section: Characterization Of Psf Membrane Zno Tiomentioning

confidence: 99%

Q-switched fiber laser using a polysulfone membrane enhanced with biosynthesized zinc oxide and titanium dioxide nanoparticles for use as saturable absorber

et al. 2022

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We presented the polysulfone membrane enhanced with zinc oxide and titanium dioxide (Psf membrane ZnO TiO2) saturable absorber (SA) to induce passively Q-switched erbium-doped fiber laser (EDFL). The Psf membrane ZnO TiO2 was synthesized by the phase inversion technique. To obtain the Psf membrane ZnO TiO2 as a SA, the SA was deposited on the fiber ferrule through a simple exfoliation technique. The modulation depth of the Psf membrane ZnO TiO2 SA was 1.06%, with a saturation intensity of 0.0006 MW cm−2. Stable Q-switched pulses were generated at 1572 nm with a threshold pump power of 59.80 mW after inserting the prepared Psf membrane ZnO TiO2 into the EDFL ring cavity. As the pump power ranges from 59.80 mW to 165.50 mW, the repetition rate increases from 13.05 to 22.61 kHz, while the pulse duration decreases from 76.60 to 44.23 µs. When the pump power reaches a maximum power of 165.50 mW, the corresponding pulse energy and optical signal-to-noise ratio are 19.00 nJ and 61.27 dB, respectively. To our best knowledge, this is the first research utilizing Psf membrane ZnO TiO2 as SA to generate Q-switched pulses. Our research work addresses a new reference for the generation of pulsed laser using Psf membrane ZnO TiO2 and discovers that it has numerous applications in nonlinear optics and ultrafast laser technology, which significantly broadens the barrier of materials for the ultrafast laser techniques.

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“…Passive mode locking [1][2][3][4] and passive Q switching [5][6][7][8] are two optical pulse generating techniques tightly related to each other [9]. In each case, a saturable absorber is an essential part of the laser cavity [10][11][12][13]. This device, responsible for the internal self-modulation of the cavity finesse, leads to the pulse generation.…”

Section: Introductionmentioning

confidence: 99%