scholarly journals PMMA Sandwiched Bi2Te3 Layer as a Saturable Absorber in Mode-Locked Fiber Laser

2018 ◽  
Vol 2018 ◽  
pp. 1-5 ◽  
Author(s):  
Guobao Jiang ◽  
Yuan Zhou ◽  
Lulu Wang ◽  
Ying Chen
Keyword(s):  
Fiber Laser ◽  
Saturable Absorber ◽  
Topological Insulator ◽  
Self Assembly ◽  
Layer Structure ◽  
Output Pulse ◽  
Mode Locking ◽  
Pulse Generation ◽  
Insulator Layer ◽  
Assembly Layer

In this paper, we fabricated a PMMA sandwiched Bi2Te3 self-assembly layer as a saturable absorber device, which was used as a passive mode locker for ultrafast pulse generation at the telecommunication band. Nanosheets of Bi2Te3 as a bulk topological insulator were successfully synthesized through a solvothermal treatment and self-assemble method to form a thin film at a water-air interface. In order to transfer the Bi2Te3 self-assembly layer to the optical fiber end, we design a construction of two PMMA layers sandwiched self-assembly layer. By incorporating this saturable absorber into an erbium-doped fiber laser, femtosecond mode-locking operation was experimentally demonstrated. The output pulse width is about 505 fs. Our results indicate that PMMA sandwiched topological insulator layer structure could be an improvement technology in traditional PMMA transfer method and could be used as a long-term stable saturable absorber for the passively mode locking lasers.

scholarly journals 2D molybdenum carbide (Mo2C)/fluorine mica (FM) saturable absorber for passively mode-locked erbium-doped all-fiber laser

Nanophotonics ◽  
2020 ◽  
Vol 9 (8) ◽  
pp. 2523-2530 ◽  
Author(s):  
Sicong Liu ◽  
Yonggang Wang ◽  
Ruidong Lv ◽  
Jiang Wang ◽  
Huizhong Wang ◽  
...  
Keyword(s):  
Fiber Laser ◽  
Pulse Duration ◽  
Saturable Absorber ◽  
Molybdenum Carbide ◽  
Heat Dissipation ◽  
Layer Structure ◽  
Transmission Rate ◽  
Mode Locking ◽  
Laser Damage Threshold ◽  
Erbium Doped

AbstractAs a new member of saturable absorber (SA), molybdenum carbide (Mo2C) has some excellent optical properties. Herein, we report a new type of Mo2C/fluorine mica (FM) SA device. Uniform and compact Mo2C films were deposited on the FM by magnetron sputtering method. In order to increase the laser damage threshold, an additional protective layer of silicon oxide was deposited on the Mo2C. The FM is a single-layer structure of 20 μm, and its high elasticity makes it not easy to fracture. The transmission rate of FM is as high as 90% at near infrared wavelength. FM has better heat dissipation and softening temperature than organic composite materials, so it can withstand higher laser power without being damaged. In this work, Mo2C/FM SA was cut into small pieces and inserted into erbium-doped fiber laser to achieve mode-locked operation. The pulse duration and average output power of the laser pulses were 313 fs and 64.74 mW, respectively. In addition, a 12th-order sub-picosecond harmonic mode-locking was generated. The maximum repetition rate was 321.6 MHz and the shortest pulse duration was 338 fs. The experimental results show that Mo2C/FM SA is a broadband nonlinear optical mode-locker with excellent performance.

scholarly journals Bismuth (III) Telluride (Bi2Te3) topological insulator embed in PVA as passive Q-switcher at 2 micron region

2016 ◽  
Vol 8 (4) ◽  
pp. 101 ◽  
Author(s):  
Nur Hidayah Muhammad Apandi ◽  
Fauzan Ahmad ◽  
Siti Nur Fatin Zuikafly ◽  
Mohd Haniff Ibrahim ◽  
Sulaiman Wadi Harun
Keyword(s):  
Quantum Electronics ◽  
Fiber Laser ◽  
Saturable Absorber ◽  
Laser Diode ◽  
Topological Insulator ◽  
Femtosecond Pulse ◽  
Pulse Generation ◽  
Waveguide Laser ◽  
Erbium Doped ◽  
Ieee Journal

We demonstrate a passive Q-switched at 2 um region by integrating Bismuth (III) Telluride (Bi2/Te3) embedded in Polyvinyl Alcohol (PVA). Bi2Te3 was embedded in PVA by solution casting approach to develop a Bi2/Te3-PVA film and integrated in the laser cavity with ring configuration to generate pulse laser. The experimental works show that the proposed passive saturable absorber operates at input pump power ranges from 637 mW to 784 mW with central wavelength of 1957.6 nm. We observed the tunable repetition rate from 12.6 kHz to 26.1 kHz with the shortest pulse width of 2.22 us. The laser produces maximum instantaneous output peak power and pulse energy of 0.42 W and 0.94 uJ, respectively. Full Text: PDF ReferencesC. Zhao, H. Zhang, X. Qi, Y. Chen, Z. Wang, S. Wen, and D. Tang, "Ultra-short pulse generation by a topological insulator based saturable absorber", Appl. Phys. Lett. 101, 211106 (2012). CrossRef Z. C. Luo, M. Liu, H. Liu, X.-W. Zheng, A.-P. Luo, C.-J. Zhao, H. Zhang, S. C. Wen, and W.-C. Xu, "2GHz passively harmonic mode-locked fiber laser by a microfiber-based topological insulator saturable absorber", Opt. Lett. 38, 5212 (2013). CrossRef J. Lee, J. Koo, Y. M. Jhon, and J. H. Lee, "A femtosecond pulse erbium fiber laser incorporating a saturable absorber based on bulk-structured Bi2Te3 topological insulator", Opt. Express 22, 6165 (2014). CrossRef M. Jung, J. Lee, J. Koo, J. Park, Y. W. Song, K. Lee, S. Lee, and J. H. Lee, "A femtosecond pulse fiber laser at 1935 nm using a bulk-structured Bi2Te3 topological insulator", Opt. Express 22, 7865(2014). CrossRef Y. H. Lin, C. Y. Yang, S.-F. Lin, W. H. Tseng, Q. Bao, C. I. Wu, and G.R. Lin, "Soliton compression of the erbium-doped fiber laser weakly started mode-locking by nanoscale p-type Bi2Te3 topological insulator particles", Laser Phys. Lett. 11, 055107(2014). CrossRef J. Lee et al., "All-fiberized, passively Q-switched 1.06 ?m laser using a bulk-structured Bi2Te3 topological insulator", Journal of Optics 16, 085203(2014). CrossRef Y. Chen, et al., "Large Energy, Wavelength Widely Tunable, Topological Insulator Q-Switched Erbium-Doped Fiber Laser", IEEE Journal of Selected Topics in Quantum Electronics 20, 315(2014). CrossRef M. Wu et al., "Nanosecond Q -Switched Erbium-Doped Fiber Laser With Wide Pulse-Repetition-Rate Range Based on Topological Insulator", IEEE Journal of Quantum Electronics 50, 393(2014). CrossRef J. Lee et al., "Dry Etched Waveguide Laser Diode on GeOI", IEEE Journal of Selected Topics in Quantum Electronics 21, 31(2015). CrossRef J. Li et al., "3-?m mid-infrared pulse generation using topological insulator as the saturable absorber ", Optics Letters 40, 3659(2015). CrossRef Z. Luo et al., "Topological-Insulator Passively Q-Switched Double-Clad Fiber Laser at 2 ?m Wavelength", IEEE J. Sel. Topics Quantum Electron 20, 0902708 (2014). CrossRef M. C. Paul, A. Dhar, S. Das, A. A. Latiff,M. T. Ahmad,and S. W. Harun, "Enhanced Erbium?Zirconia?Yttria?Aluminum Co-Doped Fiber Amplifier" IEEE Photonics Journal 7, 7100408 (2015). CrossRef H. Liu et al., "Femtosecond pulse generation from a topological insulator mode-locked fiber laser", Optics Express 22, 6868 (2014). CrossRef Z. Sun, T. Hasan, and A. C. Ferrari, "Ultrafast lasers mode-locked by nanotubes and graphene", Physica E 44, 1082(2012). CrossRef J. Lee, M. Jung, J. Koo, C. Chi, and J. Lee, "Dry Etched Waveguide Laser Diode on GeOI", IEEE Journal of Selected Topics in Quantum Electronics 21, 0900206 (2015). CrossRef H. Ahmad, A. Z. Zulkifli, K. Thambiratnam, and S. W. Harun, "2.0-?m Q-Switched Thulium-Doped Fiber Laser With Graphene Oxide Saturable Absorber", IEEE Photonics Journal5, 1501108(2013). CrossRef

scholarly journals High-quality and Large-size Topological Insulator Bi2Te3-Gold Saturable Absorber Mirror for Mode-Locking Fiber Laser

2016 ◽  
Vol 6 (1) ◽  
Author(s):  
Hou-Ren Chen ◽  
Chih-Ya Tsai ◽  
Hsin-Ming Cheng ◽  
Kuei-Huei Lin ◽  
Po-Hsiu Yen ◽  
...  
Keyword(s):  
Fiber Laser ◽  
Saturable Absorber ◽  
Topological Insulator ◽  
Mode Locking ◽  
High Quality ◽  
Large Size

scholarly journals Hafnium Bismuth Erbium Co-Doped Fiber Based Dark Pulses Generation With Black Phosphorus As Saturable Absorber

2021 ◽  
Vol 2075 (1) ◽  
pp. 012018
Author(s):  
A Ahmad ◽  
M F A Rahman ◽  
M A M Johari ◽  
A A Latiff ◽  
M H Jali ◽  
...  
Keyword(s):  
Pump Power ◽  
Fiber Laser ◽  
Saturable Absorber ◽  
Maximum Output Power ◽  
Mode Locking ◽  
Pulse Generation ◽  
Black Phosphorus ◽  
Maximum Output ◽  
Oscilloscope Trace ◽  
Dark Pulse

Abstract A dark pulse generation is demonstrated in a fiber laser configured with a 20 cm long HBEDF and multilayer Black Phosphorus as a gain medium and saturable absorber, respectively. Dark pulses fiber laser at 1.5 µm region was obtained when the pump power exceeds the threshold of 147 mW. Meanwhile, the spectrum of the dark pulse is centred at 1556.40 nm, with the 3 dB bandwidth of 0.12 nm and the separation between adjacent pulses is 1145 ns, corresponding to the cavity length of 211 m. The pulse width was measured to be around 320 ns. The radio-frequency spectrum of the dark pulse, which was measured within the 20 MHz range. More than 17 harmonics were observed within this range, which indicates the mode-locking operation of the laser. The fundamental frequency was obtained at 1.1 MHz, which agreed with the oscilloscope trace. Furthermore, it shows a signal to noise ratio of about 36.58 dB, which indicates good stability. The maximum output power of 0.78 mW and pulse energy of 0.78 nJ were obtained at 187 mW pump power.

scholarly journals Q-switched mode locking noise-like pulse generation from a thulium-doped all-fiber laser based on nonlinear polarization rotation

2021 ◽  
pp. 100115
Author(s):  
R. López Estopier ◽  
A. Camarillo Avilés ◽  
M. Bello Jiménez ◽  
O. Pottiez ◽  
M. Durán Sánchez ◽  
...  
Keyword(s):  
Fiber Laser ◽  
Mode Locking ◽  
Pulse Generation ◽  
Polarization Rotation ◽  
Nonlinear Polarization ◽  
Nonlinear Polarization Rotation

Q-SWITCHED THULIUM-DOPED FIBER LASER AT 2 MICRON REGION BY 802 NM PUMPING

2015 ◽  
Vol 74 (8) ◽  
Author(s):  
A. A. Latiff ◽  
M. T. Ahmad ◽  
Z. Zakaria ◽  
H. Ahmad ◽  
S. W. Harun
Keyword(s):  
Carbon Nanotubes ◽  
Pump Power ◽  
Fiber Laser ◽  
Saturable Absorber ◽  
Pulse Width ◽  
Laser Cavity ◽  
Pulse Generation ◽  
Q Switching ◽  
Multi Walled Carbon Nanotubes ◽  
Walled Carbon Nanotubes

An 1892.4 nm ultrafast passive Q-switched fiber laser is demonstrated by using Thulium-doped fiber (TDF) in conjunction with a multi-walled carbon nanotubes (MWCNTs) as a saturable absorber (SA). The MWCNTs film is sandwiched between two FC/PC fiber connectors and integrated into the laser cavity with 802 nm pump for Q-switching pulse generation. The pulse repetition rate can be tuned from 3.8 to 4.6 kHz while the corresponding pulse width reduces from 22.1 to 18.4 μs as the pump power is increased from 187.3 to 194.2 mW. A higher performance Q-switched Thulium-doped fiber laser (TDFL) is expected to be achieved with the optimization of the MWCNT-SA saturable absorber and laser cavity.

Dual-Wavelength Harmonically Mode-Locked Fiber Laser With Topological Insulator Saturable Absorber

2014 ◽  
Vol 26 (10) ◽  
pp. 983-986 ◽  
Author(s):  
Meng Liu ◽  
Nian Zhao ◽  
Hao Liu ◽  
Xu-Wu Zheng ◽  
Ai-Ping Luo ◽  
...  
Keyword(s):  
Fiber Laser ◽  
Saturable Absorber ◽  
Topological Insulator ◽  
Dual Wavelength

3-μm mid-infrared pulse generation using topological insulator as the saturable absorber

2015 ◽  
Vol 40 (15) ◽  
pp. 3659 ◽  
Author(s):  
Jianfeng Li ◽  
Hongyu Luo ◽  
Lele Wang ◽  
Chujun Zhao ◽  
Han Zhang ◽  
...  
Keyword(s):  
Saturable Absorber ◽  
Topological Insulator ◽  
Pulse Generation ◽  
Mid Infrared
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