Switchable, dual-wavelength passively mode-locked ultrafast fiber laser based on a single-wall carbon nanotube modelocker and intracavity loss tuning

Zhao, Xin; Zhang, Zheng; Liu, Lei; Liu, Ya; Jiang, Yaxing; Yang, Xin; Zhu, Jinsong

doi:10.1364/oe.19.001168

Cited by 243 publications

(87 citation statements)

References 20 publications

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“…Based on the fiber lengths, the average dispersion is estimated to be anomalous at ~40.2 fs/nm, and the laser is thus operated in the soliton regime. The intracavity birefringence and polarization-dependent loss result in spectral filtering [35] and intracavity loss tuning [27] effects, which is leveraged to control the dual lasing wavelengths of the laser. A SiN microring device is used in our current experiments as a test sample, which has a radius of 100 m and a cross section of 2 m by 500 nm.…”

Section: Methodsmentioning

confidence: 99%

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Picometer-resolution dual-comb spectroscopy with a free-running fiber laser

Zhao

et al. 2016

Opt. Express

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227

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Dual-comb spectroscopy utilizes two sets of comb lines with slightly different comb-tooth-spacings, and optical spectral information is acquired by measuring the radio-frequency beat notes between the sets of comb lines. It holds the promise as a real-time, high-resolution analytical spectroscopy tool for a range of applications. However, the stringent requirement on the coherence between comb lines from two separate lasers and the sophisticated control system to achieve that have confined the technology to the top metrology laboratories. By replacing control electronics with an all-optical dualcomb lasing scheme, a simplified dual-comb spectroscopy scheme is demonstrated using just one dual-wavelength, passively mode-locked fiber laser.Dual-comb pulses with a repetition-frequency difference determined by the intracavity dispersion are shown to be sufficiently stable against common-mode cavity drifts and noises. As sufficiently low relative linewidth is maintained between two sets of comb lines, capability to resolve RF beat notes between comb teeth and picometer-wide optical spectral features is demonstrated using a simple data acquisition and processing system in an all-fiber setup. Possibility to use energy-efficient, free-running fiber lasers with a small comb-toothspacing could enable the realization of low-cost dual-comb spectroscopy systems affordable to more applications.

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Section: Methodsmentioning

confidence: 99%

“…In such 'multiplexed' mode-locked fiber lasers, the difference in the repetition rate could be set by the intracavity group velocity dispersion [27] as well as birefringence [26,28,29].…”

Section: Introductionmentioning

confidence: 99%

Picometer-resolution dual-comb spectroscopy with a free-running fiber laser

Zhao

et al. 2016

Opt. Express

Self Cite

227

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“…As well as traditional mechanisms based on nonlinear polarisation evolution (NPE) arising from the Kerr effect in the fibers [2] various external materials have been harnessed to create the required fast switches in such cavities, such as semiconductor saturable absorber mirrors (SESAMs [3,4] or, more recently, saturable absorbers based on two dimensional materials suchg as MoS 2 and graphene [5][6][7][8][9][10]). While some recent research has focussed on polarisation-maintaining (PM) fiber cavities [11], a large number of cavities have continued to use non-PM fibers and with NPE as a fast saturable absorber, either in combination with a SESAM or, as here, acting in tandem with a spectral filter.…”

Section: Introductionmentioning

confidence: 99%

Simulations and experiments showing the origin of multiwavelength mode locking in femtosecond, Yb-fiber lasers

et al. 2016

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A stable and self-starting femtosecond breathing-pulse Yb-fiber oscillator is reported, modelocked using the nonlinear polarisation evolution mechanism. A bifurcation between two distinct modes of operation is demonstrated experimentally, producing pulses with a single central wavelength in one state, or following adjustment of the intra-cavity waveplates, the emission of pulses with three distinct central wavelengths. The maximum bandwidth was 72 nm at the -10 dB level and the pulses were compressible externally to 70 fs with energies of 0.75 nJ. The multi-wavelength pulses reported here are significantly shorter than the pico-second pulses previously observed from similar modelocked multi-wavelength sources. Vector simulations based on the nonlinear Schrödinger equation show that the multi-wavelength behaviour is produced by overdriving the nonlinear polarisation evolution based saturable absorber at the peak of the pulse, leading to transmission of the two wings of the strongly chirped pulse. This new insight shows clearly that the three pulses output in the multi-wavelenght state are coherent. The agreement between simulation and experimental data shows nonlinear polarisation evolution based modelocked fiber lasers are a suitable platform for studying the nonlinear dynamics underlying the bifurcation of the output.

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“…38 Moreover, our results for the parabolic shape of the pulse and the behavior of the laser pulse propagation through the fiber laser exhibit good agreement with previous studies. [39][40][41][42][43] …”

Section: Discussionmentioning

confidence: 99%

Soliton building from spontaneous emission by ring-cavity fiber laser using carbon nanotubes for passive mode locking

Al-zahy

2014

Opt. Eng

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Abstract. We investigate the generation of a chirped pulse in a single-mode, ring-cavity, erbium-doped fiber laser employing carbon nanotubes (CNTs) as a saturable absorber (SA). The pulse propagation is simulated using analytical methods to understand and quantify the role of multiple SA properties, particularly in the propagation dynamics of the laser pulse. The soliton solution is obtained on the basis of nonlinear effects, such as gain dispersion, second anomalous group-velocity dispersion, self-phase modulation, and two-photon absorption for a generalized nonlinear Schrodinger equation. The influences of the SA parameter in the range from 0.1 to 0.4 on the chirp, power, and width of the soliton are calculated. A stable, passively mode-locked fiber laser using CNTs as an SA is modeled. In addition, the power, width, chirp, and phase of the soliton pulses can be tuned by choosing suitable SA parameters.

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Switchable, dual-wavelength passively mode-locked ultrafast fiber laser based on a single-wall carbon nanotube modelocker and intracavity loss tuning

Cited by 243 publications

References 20 publications

Picometer-resolution dual-comb spectroscopy with a free-running fiber laser

Picometer-resolution dual-comb spectroscopy with a free-running fiber laser

Simulations and experiments showing the origin of multiwavelength mode locking in femtosecond, Yb-fiber lasers

Soliton building from spontaneous emission by ring-cavity fiber laser using carbon nanotubes for passive mode locking

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