A pump power controlled multiwavelength fiber laser with adjustable output channels at fixed wavelength

2011 ◽  
Vol 102 (3) ◽  
pp. 545-549 ◽  
Author(s):  
J. Tian ◽  
Y. Yao ◽  
J. J. Xiao ◽  
X. Xu ◽  
D. Chen
Keyword(s):  
Pump Power ◽  
Fiber Laser ◽  
Multiwavelength Fiber Laser

scholarly journals A Passively Q-Switched Holmium-Doped Fiber Laser with Graphene Oxide at 2058 nm

2021 ◽  
Vol 11 (1) ◽  
pp. 407
Author(s):  
Jinho Lee ◽  
Ju Han Lee
Keyword(s):  
Graphene Oxide ◽  
Pump Power ◽  
Fiber Laser ◽  
Ring Resonator ◽  
Continuous Wave ◽  
Optical Power ◽  
Polished Surface ◽  
Fiber Ring ◽  
Q Switching ◽  
Side Polished Fiber

This study reports a Q-switching-based, 2058-nm holmium (Ho) fiber laser incorporating a saturable absorber (SA) based on graphene oxide (GO). The SA was prepared with a side-polished fiber, while GO particles were deposited onto the fiber-polished surface to realize an all-fiber SA. A continuous-wave thulium-doped all-fiber laser, which was configured with a master-oscillator power-amplifier (MOPA) structure, was constructed as a pumping source. By inserting the fabricated SA into an all-fiber ring resonator based on 1-m length of Ho-doped fiber, Q-switched pulses could readily be obtained at a wavelength of 2058 nm. The pulse width was observed to vary from 2.01 to 1.56 μs as the pump power was adjusted from ~759 to 1072 mW, while the repetition rate was tunable from 45.56 to 56.12 kHz. The maximum values of average optical power and pulse energy were measured as ~11.61 mW and 207.05 nJ, respectively, at a ~1072 mW pump power.

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 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.

MoS2-wrapped microfiber-based multi-wavelength soliton fiber laser

2017 ◽  
Vol 31 (32) ◽  
pp. 1750303 ◽  
Author(s):  
Feifei Lu
Keyword(s):  
Pump Power ◽  
Fiber Laser ◽  
Saturable Absorber ◽  
Optical Communications ◽  
Fiber Lasers ◽  
Tunable Filter ◽  
Linear Birefringence ◽  
Erbium Doped ◽  
Potential Applications ◽  
Multi Wavelength

The single-, dual- and triple-wavelength passively mode-locked erbium-doped fiber lasers are demonstrated with MoS2 and polarization-dependent isolator (PD-ISO). The saturable absorber is fabricated by wrapping an MoS2 around a microfiber. The intracavity PD-ISO acts as a wavelength-tunable filter with a polarization controller (PC) by adjusting the linear birefringence. Single-wavelength mode-locked fiber laser can self-start with suitable pump power. With appropriate PC state, dual- and triple-wavelength operations can be observed when gains at different wavelengths reach a balance. It is noteworthy that dual-wavelength pulses exhibiting peak and dip sidebands, respectively, are demonstrated in the experiment. The proposed simple and multi-wavelength all-fiber conventional soliton lasers could possess potential applications in numerous fields, such as sensors, THz generations and optical communications.

Spacing-adjustable Multiwavelength Fiber Laser Based on Stimulated Brillouin Scattering

2010 ◽  
Vol 39 (5) ◽  
pp. 815-819 ◽  
Author(s):  
张祖兴 ZHANG Zu-xing ◽  
戴国星 DAI Guo-xing ◽  
况庆强 KUANG Qing-qiang ◽  
桑明煌 SANG Ming-huang ◽  
叶志清 YE Zhi-qing
Keyword(s):  
Fiber Laser ◽  
Brillouin Scattering ◽  
Stimulated Brillouin Scattering ◽  
Multiwavelength Fiber Laser ◽  
Stimulated Brillouin

Investigation on factors influencing flatness of a bidirectional SOA-based multiwavelength fiber laser

2021 ◽  
Vol 112 ◽  
pp. 103593
Author(s):  
Abdul Hadi Sulaiman ◽  
Nelidya Md Yusoff ◽  
Muhammad Zamzuri Abdul Kadir ◽  
Fairuz Abdullah ◽  
Noran Azizan Cholan ◽  
...  
Keyword(s):  
Fiber Laser ◽  
Factors Influencing ◽  
Multiwavelength Fiber Laser

scholarly journals Development of a Thulium Fiber Laser for an Atomic Spectroscopy Experiment

Fibers ◽  
2020 ◽  
Vol 8 (2) ◽  
pp. 12
Author(s):  
Ronnie Currey ◽  
Ali Khademian ◽  
David Shiner
Keyword(s):  
Pump Power ◽  
Fiber Laser ◽  
Background Level ◽  
Atomic Spectroscopy ◽  
Laser Source ◽  
Spectroscopy Experiment ◽  
Simplified Analysis ◽  
Level 1 ◽  
Thulium Fiber Laser ◽  
Atomic Helium

A convenient thulium fiber laser source is described with 3 W of output power operating at a wavelength of 2059 nm with a slope efficiency of 49% with respect to input pump power and 60% with respect to absorbed pump power. The laser was applied in an atomic helium spectroscopy experiment to quench 3He (2058.63 nm) and 4He (2058.69 nm) meta-stable singlets (21S0), allowing for further investigation of the helium fine structure. The customized laser effectively eliminates the singlet counts to well below a background level (1%). A simplified analysis describes the basic laser performance with fitted constants in reasonable agreement with previous work.

Multi-wavelength Brillouin Raman Erbium Fiber Laser utilizing Captured Residual Raman Pump Power

2018 ◽  
Author(s):  
Aiman Ismail ◽  
Hazwani Mohammad Helmi ◽  
Md Zaini Jamaludin ◽  
Pin Jern Ker ◽  
Fairuz Abdullah ◽  
...  
Keyword(s):  
Pump Power ◽  
Fiber Laser ◽  
Multi Wavelength ◽  
Raman Pump
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