Wideband saturable absorption in metal–organic frameworks (MOFs) for mode-locking Er- and Tm-doped fiber lasers

Nanoscale ◽  
2020 ◽  
Vol 12 (7) ◽  
pp. 4586-4590 ◽  
Author(s):  
Qian Zhang ◽  
Xiantao Jiang ◽  
Meng Zhang ◽  
Xinxin Jin ◽  
Han Zhang ◽  
...  
Keyword(s):  
Fiber Laser ◽  
Fiber Lasers ◽  
Metal Organic Frameworks ◽  
Mode Locking ◽  
Saturable Absorption ◽  
Metal Organic

Metal–organic frameworks (MOFs) for mode-locking Er- and Tm-doped fiber laser and as a promising nanomaterial for application in ultrafast photonic.

scholarly journals Ultrafast Fiber Lasers with Low-Dimensional Saturable Absorbers: Status and Prospects

Sensors ◽  
2021 ◽  
Vol 21 (11) ◽  
pp. 3676
Author(s):  
Pulak Chandra Debnath ◽  
Dong-Il Yeom
Keyword(s):  
Fiber Laser ◽  
Fiber Lasers ◽  
Near Infrared ◽  
Modulation Depth ◽  
Mode Locking ◽  
Saturable Absorption ◽  
Laser Applications ◽  
Integration Schemes ◽  
Pulsed Fiber Laser ◽  
Low Dimensional

Wide-spectral saturable absorption (SA) in low-dimensional (LD) nanomaterials such as zero-, one-, and two-dimensional materials has been proven experimentally with outstanding results, including low saturation intensity, deep modulation depth, and fast carrier recovery time. LD nanomaterials can therefore be used as SAs for mode-locking or Q-switching to generate ultrafast fiber laser pulses with a high repetition rate and short duration in the visible, near-infrared, and mid-infrared wavelength regions. Here, we review the recent development of emerging LD nanomaterials as SAs for ultrafast mode-locked fiber laser applications in different dispersion regimes such as anomalous and normal dispersion regimes of the laser cavity operating in the near-infrared region, especially at ~1550 nm. The preparation methods, nonlinear optical properties of LD SAs, and various integration schemes for incorporating LD SAs into fiber laser systems are introduced. In addition to these, externally (electrically or optically) controlled pulsed fiber laser behavior and other characteristics of various LD SAs are summarized. Finally, the perspectives and challenges facing LD SA-based mode-locked ultrafast fiber lasers are highlighted.

scholarly journals Generation and dynamics of soliton and soliton molecules from a VSe2/GO-based fiber laser

Nanophotonics ◽  
2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Benhai Wang ◽  
Haobin Han ◽  
Lijun Yu ◽  
Yueyue Wang ◽  
Chaoqing Dai
Keyword(s):  
Numerical Simulation ◽  
Fiber Laser ◽  
Saturable Absorber ◽  
Pulse Width ◽  
Fiber Lasers ◽  
Modulation Depth ◽  
Mode Locking ◽  
Pulse Interval ◽  
Saturable Absorption ◽  
Soliton Dynamics

Abstract Recently, in addition to exploring the application of new saturable absorber devices in fiber lasers, soliton dynamics has also become a focus of current research. In this article, we report an ultrashort pulse fiber laser based on VSe2/GO nanocomposite and verify the formation process of soliton and soliton molecules by the numerical simulation. The prepared VSe2/GO-based device shows excellent saturable absorption characteristics with a modulation depth of 14.3% and a saturation absorption intensity of 0.93 MW/cm2. The conventional soliton is obtained with pulse width of 573 fs, which is currently the narrowest pulse width based on VSe2-related material, and has a signal-to-noise ratio of 60.4 dB. In addition, the soliton molecules are realized based on the VSe2/GO for the first time and have a pulse interval of ∼2.2 ps. We study the soliton dynamics through numerical simulation and reveal that before the formation of the soliton, it undergoes multiple nonlinear stages, such as soliton mode-locking, soliton splitting, and soliton oscillation. Furthermore, the results of numerical simulation are agreed well with the experimental data. These results indicate that the VSe2/GO might be another promising saturable absorber material for ultrafast photonics, and deepen the understanding of soliton dynamics in ultrafast fiber lasers.

Passively mode-locked in Er-doped fiber laser based on semi-metallic InBi saturable absorber

2021 ◽  
Author(s):  
Jianwei Hu ◽  
Rong Huang ◽  
Ziqiao Wei ◽  
Minru Wen ◽  
Fugen Wu ◽  
...  
Keyword(s):  
Fiber Laser ◽  
Modulation Depth ◽  
Mode Locking ◽  
Nodal Line ◽  
Saturable Absorption ◽  
Optical Nonlinearities ◽  
Passive Mode ◽  
Central Wavelength ◽  
Two Dimensional Materials ◽  
Er Doped

Abstract Two-dimensional materials have drawn great interest for their applications in mode-locking owning to their unique optical nonlinearities. However, most of these 2D materials are semi-conductor. In this study, a new kind of semimetal Indium bismuth (InBi) is reported which is a topological nodal-line semimetal with exotic physical properties. The InBi nanomaterials was prepared through liquid phase exfoliation method with average thickness of 32.8 nm. The saturable absorption property was measured and passive mode-locking operation was achieved successfully in Er-doped fiber laser. It exhibits a modulation depth of 3.21%, a saturable intensity of 100 MW/cm2, and a pulse width about 859.97 fs corresponding to the central wavelength of 1562.27 nm and 3-dB bandwidth of 2.98 nm. The experimental results open a new avenue for the use of semimetals InBi nanomaterials in lasers and photonics applications.

Passively harmonic mode-locked fiber laser based on ReS2 saturable absorber

2017 ◽  
Vol 31 (18) ◽  
pp. 1750206 ◽  
Author(s):  
Feifei Lu
Keyword(s):  
Pump Power ◽  
Fiber Laser ◽  
Output Power ◽  
Saturable Absorber ◽  
Repetition Rate ◽  
Mode Locking ◽  
High Repetition Rate ◽  
Pulse Interval ◽  
Saturable Absorption ◽  
Harmonic Mode

We demonstrate the generation of harmonic mode-locking (HML) in an erbium-doped fiber laser with a microfiber-based rhenium disulfide (ReS2) saturable absorber (SA). Taking advantages of both saturable absorption and large third-order nonlinear effect of ReS2, HML pulse with 318.5 MHz repetition rate can be obtained, corresponding to 168th harmonic of fundamental repetition frequency of 1.896 MHz. When the pump power is increased gradually, the pulse interval remains constant, while the output power increases linearly. At the pump power of 450 mW, the output power is [Formula: see text]12 mW. The proposed high-repetition-rate pulse lasers would attract considerable attention due to its potential applications in soliton communications and frequency combs.

scholarly journals All-fiber passively mode-locked femtosecond fiber lasers

2021 ◽  
Author(s):  
Jiaqi Zhou
Keyword(s):  
Fiber Laser ◽  
Pulse Energy ◽  
Pulse Width ◽  
Fiber Lasers ◽  
High Efficiency ◽  
Single Mode ◽  
Scaling Up ◽  
Mode Locking ◽  
Raman Signal ◽  
Loop Mirror

This dissertation presents three all-fiber designs of passively mode-locked lasers in order to achieve high pulse energy, environmentally-stable dissipative soliton (DS) operation in all-normal-dispersion cavities. A numerical model for DS mode-locked fiber lasers based on the nonlinear Schrodinger equation has been used to guide the experimental designs. Firstly, an environmentally-stable and ultra-compact SESAM mode-locked fiber laser is demonstrated. The all-fiber design is realized using a mode-field-adaptor (MFA) to couple light onto the SESAM. A polarization-maintaining fiber loop mirror serves multiple functions as a highly reflective mirror, an output coupler and polarization selector. Self-starting and stable DS mode-locking operation is achieved with 1.7 nJ pulse energy and a 22 ps pulse width. Secondly, an ultra-stable DS mode-locking was demonstrated in a long cavity ring laser with a nonlinear amplified loop mirror (NALM) as a mode-locking device. The output pulses of 32 nJ, 615 fs de-chirped pulse width were obtained with the Raman signal suppressed below -20 dB in a 81 m long cavity. The mode-locking is self-starting and the mode-locked pulse train shows excellent stability. Thirdly, the mode-laser cavity was extended with a piece of large-mode-area (LMA) fiber with a low dispersion to further scaling up the pulse energy to 56.8 nJ. The laser pulses were compressed to 750 fs by a pair of volume gratings. In the processing of scaling-up the pulse energy of the NALM mode-locked fiber laser, some interesting physical phenomena were observed, such as the operation regime transition from noise-like to DS with a sudden reduction of Raman signal and a unique waves-splitting with a stable temporal spacing. The phenomena were studied and explained in this dissertation. In addition to the mode-locked fiber laser, a CW and a Q-switched fiber lasers were also designed with a single-mode- multimode- single-mode (SMS) filter as an effective mean of overcoming nonlinear effects. The transmission spectral property of the SMS was studied which fits well with theoretical calculation. One high efficiency SMS CW fiber lasers and one SMS Q-switched fiber laser were designed which showed the effectiveness of the SMS filter for inhibiting the SRS and significantly reducing SPM.

scholarly journals Roadmap to high-energy square pulses in anomalous dispersion fiber lasers

2016 ◽  
Vol 8 (4) ◽  
pp. 95
Author(s):  
G. Semaan ◽  
F. Ben Braham ◽  
M. Salhi ◽  
François Sanchez
Keyword(s):  
Fiber Laser ◽  
Fiber Lasers ◽  
High Energy ◽  
Mode Locking ◽  
Resonance Mode ◽  
Anomalous Dispersion ◽  
Dissipative Soliton ◽  
Wave Pulse ◽  
Square Wave ◽  
Soliton Resonance

Dissipative soliton resonance (DSR) is a soliton formation where the energy in a dissipative system becomes infinite. In the anomalous dispersion regime, this energy is not limited by the soliton area theorem. Since this phenomenon is wave breaking free, it can be useful in designing fiber lasers generating pulses with relatively high energies. Based on this principle, we have demonstrated the emission of high energetic square pulses from Er:Yb double-clad passively mode-locked fiber lasers using different mode-locking mechanisms. We first show the evolution of pulse width, energy and peak power by varying the pumping power of the amplifier, then we control separately the characteristic of the output square pulse by assigning each one to an amplifier. Experimental results exhibit record energies in fiber lasers up to 10 uJ. Full Text: PDF ReferencesW. Chang, A. Ankiewicz, J.M Soto Crespo and N. Akhmediev, " Dissipative soliton resonances", Phys. Rev. A 78, 023830 (2008). CrossRef P. Grelu, W. Chang, A. Ankiewicz, J. M. Soto-Crespo, and N. Akhmediev, "Dissipative soliton resonance as a guideline for high-energy pulse laser oscillators", J. Opt. Soc. Am. B 27, 2336 (2010). CrossRef X. Wu, D. Y. Tang, H. Zhang, and L. M. Zhao, "Dissipative soliton resonance in an all-normal-dispersion erbium-doped fiber laser", Opt. Express 17, 5580 (2009). CrossRef G. Semaan, F. Ben Braham, M. Salhi, Y. Meng, F. Bahloul, and F. Sanchez, "Generation of high energy square-wave pulses in all anomalous dispersion Er:Yb passive mode locked fiber ring laser", Opt. Express 24, 8399 (2016). CrossRef K. Krzempek, "Dissipative soliton resonances in all-fiber Er-Yb double clad figure-8 laser", Opt. Express 23, 30651 (2015). CrossRef L. Mei et al., "Width and amplitude tunable square-wave pulse in dual-pump passively mode-locked fiber laser", Opt. Lett. 39, 3235 (2014). CrossRef X. Zhang et al., "Square-wave pulse with ultra-wide tuning range in a passively mode-locked fiber laser", Opt. Lett. 37, 1334 (2012). CrossRef K. Krzempek, J. Sotor, and K. Abramski, "Compact all-fiber figure-9 dissipative soliton resonance mode-locked double-clad Er:Yb laser", Opt. Lett. 41, 4995-4998 (2016). CrossRef G. Semaan, F. Ben Braham, J. Fourmont, M. Salhi, F. Bahloul, and F. Sanchez, "10uJ dissipative soliton resonance square pulse in a dual amplifier figure-of-eight double-clad Er:Yb mode-locked fiber laser", Opt. Lett. 41, 4767 (2016). CrossRef K. Krzempek and K. Abramski, "Dissipative soliton resonance mode-locked double clad Er:Yb laser at different values of anomalous dispersion", Opt. Express 24, 22379-22386 (2016). CrossRef

scholarly journals Dual-wavelength dissipative solitons in an anomalous-dispersion-cavity fiber laser

Nanophotonics ◽  
2019 ◽  
Vol 9 (8) ◽  
pp. 2361-2366
Author(s):  
Yufeng Song ◽  
Guodong Shao ◽  
Luming Zhao ◽  
Deyuan Shen ◽  
Han Zhang ◽  
...  
Keyword(s):  
Fiber Laser ◽  
Experimental Observation ◽  
Fiber Lasers ◽  
Mode Locking ◽  
Dual Wavelength ◽  
Gain Bandwidth ◽  
Dissipative Solitons ◽  
Multi Wavelength ◽  
Bandwidth Limitation ◽  
Dissipative Mechanism

AbstractWe report on the experimental observation of dual-wavelength dissipative soliton operation of a fiber laser with net anomalous cavity dispersion. Different from the dual- or multi-wavelength soliton operation of fiber lasers where mode locking is used to initiate soliton formation, no mode locking occurs in our fiber laser. Instead, soliton formation is through the dissipative mechanism caused by the effective gain bandwidth limitation. Either dual-wavelength scalar, or vector, or induced dissipative solitons are experimentally obtained. Their robustness is experimentally confirmed.

scholarly journals Ultra short pico second chirped pulse generation using SESAM based mode-locked fiber laser

2019 ◽  
Author(s):  
Arpan Dutta
Keyword(s):  
Fiber Laser ◽  
Fiber Lasers ◽  
Short Pulse ◽  
Mode Locking ◽  
Pulse Generation ◽  
Short Pulses ◽  
Chirped Pulse ◽  
Chirped Pulse Amplification ◽  
Pulsed Fiber Laser ◽  
Ultra Short Pulse

Ultra short pulse fiber lasers are widely used in many photonic systems for industrial, biomedical and scientific applications. Popularity of these lasers rapidly developed due to increment in demand of shorter pulses for various applications like communication, ophthalmology, micromachining, medical imaging and precision metrology. Pulsed fiber laser can produce ultra short pulses in order of pico or femto second. Mode locking technique is widely used in rare earth doped fiber lasers to produce such ultra short pulses of light. In this paper, pulsed operation of fiber laser was studied experimentally at 1 micron region. Experiment on pulsed fiber laser has been done using ytterbium (Yb) doped active fiber. Using the principle of passive mode locking, a 2.3 pico-second pulse was produced at 1064nm wavelength. A semiconductor saturable absorber mirror was used to mode lock the laser. The spectral domain data showed that the pulse was not Fourier transform limited which means the pulse was chirped. Chirped pulse amplification systems exploit this pulse characteristic for power scaling of ultra-short pico- second to femto-second pulses.

scholarly journals All-fiber passively mode-locked femtosecond fiber lasers

2021 ◽  
Author(s):  
Jiaqi Zhou
Keyword(s):  
Fiber Laser ◽  
Pulse Energy ◽  
Pulse Width ◽  
Fiber Lasers ◽  
High Efficiency ◽  
Single Mode ◽  
Scaling Up ◽  
Mode Locking ◽  
Raman Signal ◽  
Loop Mirror

This dissertation presents three all-fiber designs of passively mode-locked lasers in order to achieve high pulse energy, environmentally-stable dissipative soliton (DS) operation in all-normal-dispersion cavities. A numerical model for DS mode-locked fiber lasers based on the nonlinear Schrodinger equation has been used to guide the experimental designs. Firstly, an environmentally-stable and ultra-compact SESAM mode-locked fiber laser is demonstrated. The all-fiber design is realized using a mode-field-adaptor (MFA) to couple light onto the SESAM. A polarization-maintaining fiber loop mirror serves multiple functions as a highly reflective mirror, an output coupler and polarization selector. Self-starting and stable DS mode-locking operation is achieved with 1.7 nJ pulse energy and a 22 ps pulse width. Secondly, an ultra-stable DS mode-locking was demonstrated in a long cavity ring laser with a nonlinear amplified loop mirror (NALM) as a mode-locking device. The output pulses of 32 nJ, 615 fs de-chirped pulse width were obtained with the Raman signal suppressed below -20 dB in a 81 m long cavity. The mode-locking is self-starting and the mode-locked pulse train shows excellent stability. Thirdly, the mode-laser cavity was extended with a piece of large-mode-area (LMA) fiber with a low dispersion to further scaling up the pulse energy to 56.8 nJ. The laser pulses were compressed to 750 fs by a pair of volume gratings. In the processing of scaling-up the pulse energy of the NALM mode-locked fiber laser, some interesting physical phenomena were observed, such as the operation regime transition from noise-like to DS with a sudden reduction of Raman signal and a unique waves-splitting with a stable temporal spacing. The phenomena were studied and explained in this dissertation. In addition to the mode-locked fiber laser, a CW and a Q-switched fiber lasers were also designed with a single-mode- multimode- single-mode (SMS) filter as an effective mean of overcoming nonlinear effects. The transmission spectral property of the SMS was studied which fits well with theoretical calculation. One high efficiency SMS CW fiber lasers and one SMS Q-switched fiber laser were designed which showed the effectiveness of the SMS filter for inhibiting the SRS and significantly reducing SPM.

MoS2 nano-flake doped polyvinyl alcohol enabling polarized soliton mode-locking of a fiber laser

2016 ◽  
Vol 4 (40) ◽  
pp. 9454-9459 ◽  
Author(s):  
Ting-Hui Chen ◽  
Chun-Yen Lin ◽  
Yung-Hsiang Lin ◽  
Yu-Chieh Chi ◽  
Chih-Hsien Cheng ◽  
...  
Keyword(s):  
Polyvinyl Alcohol ◽  
Fiber Laser ◽  
Mode Locking ◽  
Saturable Absorption ◽  
Hybrid Mode ◽  
Polyvinyl Alcohol Film ◽  
Er Doped

Hybrid mode-locking of non-polarized Er-doped fiber laser with nonlinear saturable absorption of MoS2 nano-flake doped ultrathin polyvinyl alcohol film is demonstrated to obtain 330-fs pulsewidth.

Sign in / Sign up

Export Citation Format

Share Document