scholarly journals Submicrosecond Q-Switching Er-Doped All-Fiber Ring Laser Based on Black Phosphorus

2017 ◽  
Vol 2017 ◽  
pp. 1-4 ◽  
Author(s):  
Yao Cai ◽  
Yanliang He ◽  
Xiaoke Zhang ◽  
Rui Jiang ◽  
Chenliang Su ◽  
...  
Keyword(s):  
Pump Power ◽  
Saturable Absorber ◽  
Ring Cavity ◽  
Physical Structure ◽  
Pulse Generation ◽  
Black Phosphorus ◽  
Ultrafast Relaxation ◽  
Q Switching ◽  
Direct Band ◽  
Er Doped

Black phosphorus (BP), a new two-dimensional (2D) material, has been deeply developed for extensive applications in electronics and optoelectronics due to its similar physical structure to graphene and thickness dependent direct band gap. Here, we demonstrated a submicrosecond passive Q-switching Er-doped fiber laser with BP as saturable absorber (SA). The BP saturable absorber was fabricated by mechanical exfoliation method. By taking full advantage of the ultrafast relaxation time of BP-SA and careful design of compact ring cavity, we obtained stable Q-switching pulses output with a shortest duration as narrow as 742 ns. With increasing the pump power, the pulse repetition rate accreted gradually almost linearly from 9.78 to 61.25 kHz, and the pulse duration declined rapidly at lower pump power regime and retained approximate stationary at higher pump power regime from 3.05 to 0.742 μs. The experimental results indicate that BP-SA can be an effective SA for nanosecond Q-switching pulse generation.

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.

scholarly journals Black Phosphorus Saturable Absorber for Pulse Generation Using Q-switched Teachnique

2018 ◽  
Vol 11 (1) ◽  
pp. 36
Author(s):  
Belal Ahmed Hamida ◽  
L A Hussein ◽  
Sheroz Khan ◽  
Mohamed Hadi Habaebi ◽  
Ahmad Anwar Zainuddin ◽  
...  
Keyword(s):  
Saturable Absorber ◽  
Pulse Train ◽  
Ring Cavity ◽  
Maximum Output Power ◽  
Pulse Generation ◽  
Black Phosphorus ◽  
Maximum Output ◽  
Erbium Doped ◽  
The Stability ◽  
Laser Ring

This paper reported a passive Q-switched erbium doped fiber laser (EDFL) using two-dimensional (2D) material of black phosphorus saturable absorber (BP-SA). The maximum output power reached is 3.54 mW, which is generated by pump power of 42.327 mW. The results show that a stable pulse was generated with repetition rate starts at about 9.606 kHz and ends at about 44.72 kHz and very narrow pulse width between 40.01 µs and 9.84 µs and pulse energy 80 nJ. Clearly, the stability of the Q-switched pulse train was achieved because the BP-SA film was inserted in the laser ring cavity.

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.

Optically driven black phosphorus as a saturable absorber for mode-locked laser pulse generation

2016 ◽  
Vol 55 (8) ◽  
pp. 081317 ◽  
Author(s):  
Yao Chen ◽  
Haoran Mu ◽  
Pengfei Li ◽  
Shenghuang Lin ◽  
Bannur N. Shivananju ◽  
...  
Keyword(s):  
Laser Pulse ◽  
Saturable Absorber ◽  
Pulse Generation ◽  
Black Phosphorus ◽  
Mode Locked Laser

Er-doped Q-switched fiber laser with a black phosphorus/polymethyl methacrylate saturable absorber

2018 ◽  
Vol 57 (6) ◽  
pp. 1292 ◽  
Author(s):  
Sicong Liu ◽  
Yani Zhang ◽  
Lu Li ◽  
Yonggang Wang ◽  
Ruidong Lv ◽  
...  
Keyword(s):  
Fiber Laser ◽  
Polymethyl Methacrylate ◽  
Saturable Absorber ◽  
Black Phosphorus ◽  
Er Doped

scholarly journals Black phosphorus saturable absorber for ultrashort pulse generation

2015 ◽  
Vol 107 (5) ◽  
pp. 051108 ◽  
Author(s):  
J. Sotor ◽  
G. Sobon ◽  
W. Macherzynski ◽  
P. Paletko ◽  
K. M. Abramski
Keyword(s):  
Saturable Absorber ◽  
Ultrashort Pulse ◽  
Pulse Generation ◽  
Black Phosphorus ◽  
Ultrashort Pulse Generation
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