Q-switched laser generation using MoWS2-rGO in Erbium-doped fiber laser cavity

2018 ◽  
Vol 426 ◽  
pp. 1-8 ◽  
Author(s):  
H. Ahmad ◽  
S.I. Ooi ◽  
Z.C. Tiu ◽  
B.M.A. Rahman
Keyword(s):  
Fiber Laser ◽  
Laser Cavity ◽  
Laser Generation ◽  
Erbium Doped

scholarly journals Observation of dark and bright pulses in q-switched erbium doped fiber laser using graphene nano-platelets as saturable absorber

2019 ◽  
Vol 8 (4) ◽  
Author(s):  
Nur Hidayah Muhamad Apandi ◽  
Siti Nur Fatin Zuikafly ◽  
Nabilah Kasim ◽  
Mohd Ambri Mohamed ◽  
Sulaiman Wadi Harun ◽  
...  
Keyword(s):  
Polyvinyl Alcohol ◽  
Fiber Laser ◽  
Saturable Absorber ◽  
Signal To Noise Ratio ◽  
Ring Cavity ◽  
Laser Cavity ◽  
Laser Generation ◽  
Output Peak Power ◽  
Erbium Doped ◽  
Cavity Configuration

In this paper, a passively Q-switched Erbium doped fiber laser (EDFL) by residing Graphene nanoplatelets (GnPs) embedded in polyvinyl alcohol (PVA) based saturable absorber (SA) is demonstrated. To aid the dispersion of GNPs, a surfactant is used and then it is mixed with polyvinyl alcohol (PVA) as host polymer to develop GnPs-PVA film based passive SA. The GnPs-PVA based film then integrated in laser cavity in ring cavity configuration for pulse laser generation. The experimental works show that the proposed passive SA operates at input pump power range from 77 mW to 128 mW with a tunable repetition rate from 78.4 kHz to 114.8 kHz and a shortest pulse width of 3.69 µs. The laser produces maximum instantaneous output peak power and pulse energy of 7.3 mW and 30.46 nJ, respectively and accompanied by signal to noise ratio (SNR) of 64 dB.

A switchable triple-wavelength erbium-doped fiber laser with a linear laser cavity

2006 ◽  
Vol 48 (4) ◽  
pp. 632-635 ◽  
Author(s):  
D. Liu ◽  
N. Q. Ngo ◽  
H. N. Chan ◽  
C. K. Teu ◽  
S. C. Tjin
Keyword(s):  
Fiber Laser ◽  
Laser Cavity ◽  
Erbium Doped ◽  
Linear Laser

scholarly journals Graphene slurry based passive Q-switcher in erbium doped fiber laser

2019 ◽  
Vol 8 (4) ◽  
Author(s):  
Siti Nur Fatin Zuikafly ◽  
Nor Farhah Razak ◽  
Rizuan Mohd Rosnan ◽  
Sulaiman Wadi Harun ◽  
Fauzan Ahmad
Keyword(s):  
Pump Power ◽  
Fiber Laser ◽  
Pulse Width ◽  
Peak Power ◽  
Signal To Noise Ratio ◽  
Pulsed Laser ◽  
Laser Cavity ◽  
Signal To Noise ◽  
Maximum Pulse Energy ◽  
Erbium Doped

In this work, a Graphene slurry based passive Q-switcher fabricated from Graphene-Polylactic acid (PLA) filament which is used for 3D printing. To produce the Graphene slurry, the diameter of the filament was reduced and Tetrahydrofuran (THF) was used to dissolve the PLA. The Graphene-THF suspension was drop cast to the end of a fiber ferrule and the THF then evaporated to develop Graphene slurry based SA which is integrated in fiber laser cavity. At threshold input pump power of 30.45 mW, a Q-switched Erbium-doped fiber laser (EDFL) can be observed with the wavelength centered at 1531.01 nm and this remained stable up to a pump power of 179.5 mW. As the pump power was increased gradually, an increase in the repetition rates was recorded from 42 kHz to 125 kHz, while the pulse width was reduced to 2.58 μs from 6.74 μs. The Q-switched laser yielded a maximum pulse energy and peak power of 11.68 nJ and 4.16 mW, respectively. The proposed Graphene slurry based saturable absorber also produced a signal-to-noise ratio of 44 dB indicating a stable Q-switched pulsed laser.

Switchable different operation states in an erbium-doped fiber laser cavity with normal dispersion

2012 ◽  
Vol 285 (18) ◽  
pp. 3809-3815 ◽  
Author(s):  
Weiqing Gao ◽  
Meisong Liao ◽  
Hiroyasu Kawashima ◽  
Takenobu Suzuki ◽  
Yasutake Ohishi
Keyword(s):  
Fiber Laser ◽  
Laser Cavity ◽  
Normal Dispersion ◽  
Erbium Doped

Investigation on characteristics of self-organization in Mach-Zehnder erbium-doped fiber laser cavity

2008 ◽  
Vol 6 (3) ◽  
pp. 186-188
Author(s):  
刘丰年 Fengnian Liu ◽  
刘波 Bo Liu ◽  
黄榜才 Bangcai Huang ◽  
开桂云 Guiyun Kai ◽  
袁树忠 Shuzhong Yuan ◽  
...  
Keyword(s):  
Fiber Laser ◽  
Laser Cavity ◽  
Self Organization ◽  
Erbium Doped

scholarly journals Hybrid Raman-Erbium Random Fiber Laser with a Half Open Cavity Assisted by Artificially Controlled Backscattering Fiber Reflectors

2021 ◽  
Author(s):  
R. A. Perez-Herrera ◽  
P. Roldan-Varona ◽  
M. Galarza ◽  
S. Sañudo-Lasagabaster ◽  
L. Rodriguez-Cobo ◽  
...  
Keyword(s):  
Fiber Laser ◽  
Output Power ◽  
Signal To Noise Ratio ◽  
Power Level ◽  
Laser Cavity ◽  
Gain Medium ◽  
Optical Signal ◽  
Open Cavity ◽  
Output Power Level ◽  
Erbium Doped

Abstract A hybrid Raman-erbium random fiber laser (RFL) with a half-open cavity assisted by chirped artificially controlled backscattering fiber reflectors (ACBFRs) is presented. A combination of 2.4 km of dispersion compensating fiber (DCF) with two highly erbium-doped fiber (EDF) pieces of 5 m length was used as gain medium. A single random laser emission line centered at 1553.8 nm with an output power level of -6.5 dBm and an optical signal to noise ratio (OSNR) of 47 dB was obtained when pumped at 37.5 dBm. A full width at half maximum (FHWM) of 1 nm and a 100% confidence level (CL) output power instability as low as 0.08 dB were measured. The utilization of the new laser cavity as a temperature and strain sensor is also experimentally studied.

Dispersion independent mode-locked erbium-doped fiber laser with a chirped fiber Bragg grating

2018 ◽  
Vol 27 (04) ◽  
pp. 1850040 ◽  
Author(s):  
Simin Liu ◽  
Kehan Yu ◽  
Zuxing Zhang
Keyword(s):  
Fiber Laser ◽  
Fiber Bragg Grating ◽  
Laser Cavity ◽  
Experimental Results ◽  
Bragg Grating ◽  
Laser Dynamics ◽  
Erbium Doped ◽  
Chirped Fiber Bragg Grating ◽  
Output Characteristics ◽  
Independent Mode

We propose and demonstrate a dispersion-independent erbium-doped mode-locked fiber laser by incorporating a chirped fiber Bragg grating (CFBG) into the laser cavity. Our experimental results show that the fiber laser has similar output characteristics, no matter which section of the CFBG is connected to the laser cavity through a circulator, i.e., opposite dispersion is introduced into the laser cavity. Dispersion independent feature is attributed to the relatively large nonlinearity of the laser cavity with certain bandwidth. This enriches the laser dynamics and provides a new idea for the design of new lasers.

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