Optical control of rational harmonic mode-locking in a fiber laser for bright and dark pulse generation

2002 ◽  
Author(s):  
W.W. Tang ◽  
C. Shu ◽  
K.L. Lee
Keyword(s):  
Fiber Laser ◽  
Mode Locking ◽  
Pulse Generation ◽  
Optical Control ◽  
Harmonic Mode ◽  
Dark Pulse

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

scholarly journals 14.5 GHz passive harmonic mode-locking in a dispersion compensated Tm-doped fiber laser

2017 ◽  
Vol 7 (1) ◽  
Author(s):  
Yazhou Wang ◽  
Jianfeng Li ◽  
Kundong Mo ◽  
Yanyan Wang ◽  
Fei Liu ◽  
...  
Keyword(s):  
Fiber Laser ◽  
Mode Locking ◽  
Harmonic Mode

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 Low noise GHz passive harmonic mode-locking of soliton fiber laser using evanescent wave interaction with carbon nanotubes

2011 ◽  
Vol 19 (20) ◽  
pp. 19775 ◽  
Author(s):  
Chang Su Jun ◽  
Ju Hee Im ◽  
Sang Hwa Yoo ◽  
Sun Young Choi ◽  
Fabian Rotermund ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Fiber Laser ◽  
Evanescent Wave ◽  
Wave Interaction ◽  
Mode Locking ◽  
Low Noise ◽  
Harmonic Mode

Generation of harmonic mode-locking of bound solitons in the ultrafast fiber laser with Sb2Te3 saturable absorber on microfiber

2019 ◽  
Vol 16 (2) ◽  
pp. 025103 ◽  
Author(s):  
Zhenhong Wang ◽  
Chenyang Li ◽  
Junwei Ye ◽  
Zhi Wang ◽  
Yan-Ge Liu
Keyword(s):  
Fiber Laser ◽  
Saturable Absorber ◽  
Mode Locking ◽  
Harmonic Mode
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