Evaluation of 976 nm Multimode Single Emitter Laser Diodes for Efficient Pumping of 100 W+ Yb-doped Fiber Laser

2016 ◽  
Vol 67 (1) ◽  
pp. 88
Author(s):  
Rishi Kant Sharma ◽  
Shammi Wadhwa ◽  
N.K. Verma ◽  
M.N. Reddy ◽  
H Rana
Keyword(s):  
Emission Spectrum ◽  
Fiber Laser ◽  
Laser Diodes ◽  
Coupling Efficiency ◽  
Laser Cavity ◽  
Optical Efficiency ◽  
Multimode Laser ◽  
Drive Current ◽  
Peak Emission Wavelength ◽  
Single Emitter

<p>Experimental evaluation of spectral and power-current (P-I) characteristics of fiber coupled single emitter multimode laser diodes used for development of efficient pumping assembly is reported. Fiber coupled laser diodes emitting around 976 nm are best suited for pumping Yb-doped fiber lasers because of excellent coupling efficiency and reduced thermal load. We have experimentally investigated emission spectrum of fiber coupled multimode laser diodes at different temperatures and drive currents. It is found that peak emission wavelength shifts towards the longer wavelength with increase in temperature and drive current. P-I characteristics of fiber coupled laser diodes have been obtained and presented for drive current from 0.4 A to 11.5 A. Based on experiment, we have constructed spectrally matched laser diode assembly for efficient pumping of 100 W fiber laser. It requires very precise control of temperature and drive current to maintain the emission spectrum. Total 162 W power is pumped in to the Yb-doped fiber laser cavity through multi-mode pump combiners and we have obtained 110 W fiber laser output power @1070 nm. The achieved optical-to-optical efficiency is 68 per cent.</p>

scholarly journals Distributed feedback fiber laser pumped by multimode laser diodes

2008 ◽  
Vol 33 (6) ◽  
pp. 614 ◽  
Author(s):  
A. Schülzgen ◽  
L. Li ◽  
D. Nguyen ◽  
Ch. Spiegelberg ◽  
R. Matei Rogojan ◽  
...  
Keyword(s):  
Fiber Laser ◽  
Laser Diodes ◽  
Distributed Feedback ◽  
Multimode Laser

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

Highly reliable, high-brightness 915nm laser diodes for fiber laser applications

2008 ◽  
Author(s):  
Zuntu Xu ◽  
Wei Gao ◽  
Lisen Cheng ◽  
Kejian Luo ◽  
Kun Shen ◽  
...  
Keyword(s):  
Fiber Laser ◽  
Laser Diodes ◽  
Laser Applications ◽  
High Brightness

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.

High Coupling Efficiency of the Fiber-Coupled Module Based on Photonic-Band-Crystal Laser Diodes

2017 ◽  
Vol 34 (7) ◽  
pp. 074205 ◽  
Author(s):  
Yang Chen ◽  
Yu-Fei Wang ◽  
Hong-Wei Qu ◽  
Yu-Fang Zhang ◽  
Yun Liu ◽  
...  
Keyword(s):  
Laser Diodes ◽  
Coupling Efficiency ◽  
Crystal Laser ◽  
Photonic Band

High-coupling-efficiency laser diodes integrated with spot-size converters fabricated on 2 inch InP substrates

1995 ◽  
Vol 31 (24) ◽  
pp. 2102-2104 ◽  
Author(s):  
M. Wada ◽  
K. Kishi ◽  
K. Kawano ◽  
Y. Noguchi ◽  
Y. Kadota ◽  
...  
Keyword(s):  
Laser Diodes ◽  
Coupling Efficiency ◽  
Spot Size ◽  
Inp Substrates

High reliability and high performance of 9xx-nm single emitter laser diodes

2011 ◽  
Author(s):  
L. Bao ◽  
P. Leisher ◽  
J. Wang ◽  
M. Devito ◽  
D. Xu ◽  
...  
Keyword(s):  
High Performance ◽  
High Reliability ◽  
Laser Diodes ◽  
Single Emitter

scholarly journals High-power broadband supercontinuum generation through a simple narrow-bandwidth FBGs-based fiber laser cavity

2022 ◽  
Vol 20 (1) ◽  
pp. 011405
Author(s):  
Song Zhang ◽  
Man Jiang ◽  
Can Li ◽  
Rongtao Su ◽  
Pu Zhou ◽  
...  
Keyword(s):  
Fiber Laser ◽  
High Power ◽  
Laser Cavity ◽  
Supercontinuum Generation ◽  
Narrow Bandwidth

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.

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