3.53 kW average power all-fiber amplifier with 0.16nm narrow-linewidth single-mode beam quality

2018 ◽  
Author(s):  
Yi Shi ◽  
Quihui Chu ◽  
Li'e Ouyang ◽  
Feng Jing ◽  
Jianjun Wang ◽  
...  
Keyword(s):  
Beam Quality ◽  
Average Power ◽  
Single Mode ◽  
Fiber Amplifier ◽  
Narrow Linewidth ◽  
Mode Beam

scholarly journals Narrow linewidth, single mode 3 kW average power from a directly diode pumped ytterbium-doped low NA fiber amplifier

2016 ◽  
Vol 24 (6) ◽  
pp. 6011 ◽  
Author(s):  
F. Beier ◽  
C. Hupel ◽  
J. Nold ◽  
S. Kuhn ◽  
S. Hein ◽  
...  
Keyword(s):  
Average Power ◽  
Single Mode ◽  
Fiber Amplifier ◽  
Narrow Linewidth ◽  
Diode Pumped ◽  
Mode 3

scholarly journals Monolithic high-average-power linearly polarized nanosecond pulsed fiber laser with near-diffraction-limited beam quality

2018 ◽  
Vol 6 ◽  
Author(s):  
Long Huang ◽  
Pengfei Ma ◽  
Daren Meng ◽  
Lei Li ◽  
Rumao Tao ◽  
...  
Keyword(s):  
Fiber Laser ◽  
Output Power ◽  
Linear Polarization ◽  
Beam Quality ◽  
Average Power ◽  
Narrow Linewidth ◽  
High Average Power ◽  
Maximal Output Power ◽  
Maximal Output ◽  
Pulsed Fiber Laser

An all-fiberized high-average-power narrow linewidth ns pulsed laser with linear polarization is demonstrated. The laser system utilizes a typical master oscillator power amplifier (MOPA) configuration. The stimulated Brillouin scattering (SBS) is effectively suppressed due to the short fiber length and large mode area in the main amplifier, combined with the narrow pulse duration smaller than the phonon lifetime of SBS effect. A maximal output power of 466 W is obtained with a narrow linewidth of ${\sim}$203.6 MHz, and the corresponding slope efficiency is ${\sim}$80.3%. The pulse duration is condensed to be ${\sim}$4 ns after the amplification, corresponding to the peak power of 8.8 kW and the pulse energy of $46.6~\unicode[STIX]{x03BC}\text{J}$. Near-diffraction-limited beam quality with an $M^{2}$ factor of 1.32 is obtained at the output power of 442 W and the mode instability (MI) is observed at the maximal output power. To the best of our knowledge, this is the highest average output power of the all-fiberized narrow linewidth ns pulsed fiber laser with linear polarization and high beam quality, which is a promising source for the nonlinear frequency conversion, laser lidar, and so on.

Generation of femtosecond pulses based on efficient frequency doubling of erbium fiber oscillator-amplifier laser

2014 ◽  
Vol 23 (02) ◽  
pp. 1450016 ◽  
Author(s):  
Guanyu Liu ◽  
Zhiqiang Lv ◽  
Zibo Gong ◽  
Kebin Shi
Keyword(s):  
Conversion Efficiency ◽  
Repetition Rate ◽  
Nonlinear Crystal ◽  
Average Power ◽  
Frequency Doubling ◽  
Single Mode ◽  
Fiber Amplifier ◽  
Femtosecond Pulses ◽  
Rate Frequency

We report on frequency doubling of 1.55-μm fiber oscillator-amplifier laser with conversion efficiency of 27% by using off-the-shelf nonlinear crystal. The system generates 135-femto-second (fs) pulses with average power of 110 mW at 80 MHz repetition rate. Frequency doubling efficiency as a function of pulse pre-chirp in front of a single mode erbium fiber amplifier was investigated.

Kilowatt-level Peak Power Monolithic Fiber Amplifier for Single-Mode, Narrow Linewidth 100 ns Pulses

2010 ◽  
Author(s):  
Wei Shi ◽  
Eliot B. Petersen ◽  
Dan T. Nguyen ◽  
Jie Zong ◽  
Zhidong Yao ◽  
...  
Keyword(s):  
Peak Power ◽  
Single Mode ◽  
Fiber Amplifier ◽  
Narrow Linewidth

scholarly journals A high-power narrow-linewidth 1018 nm fiber laser based on a single-mode–few-mode–single-mode structure

2015 ◽  
Vol 3 ◽  
Author(s):  
Man Jiang ◽  
Pu Zhou ◽  
Hu Xiao ◽  
Pengfei Ma
Keyword(s):  
Fiber Laser ◽  
High Power ◽  
Beam Quality ◽  
Power Level ◽  
Single Mode ◽  
Single Mode Fiber ◽  
Narrow Linewidth ◽  
Output Beam ◽  
Optical Efficiency ◽  
Spectral Ranges

We demonstrate an all-fiber high-power Yb-doped 1018 nm fiber laser with a Gaussian-shaped output beam profile based on a mismatched structure, which consists of a pair of single-mode fiber Bragg gratings and a section of few-mode double-cladding gain fiber. The output power is up to 107.5 W with an optical-to-optical efficiency of 63%, and the 3 dB band is 0.26 nm at this power level. Such a structure of single-mode–few-mode–single-mode fiber oscillator can be used to generate high-power narrow-linewidth lasing with excellent beam quality in other spectral ranges.

scholarly journals Kilometre-scale, kilowatt average power, single-mode laser delivery through hollow core fibre: overcoming nonlinear limits of glass fibre

2021 ◽  
Author(s):  
Hans Christian Mulvad ◽  
Seyed mohammad Abokhamis Mousavi ◽  
Viktor Zuba ◽  
Lin Xu ◽  
Hesham Sakr ◽  
...  
Keyword(s):  
Continuous Wave ◽  
Beam Quality ◽  
Average Power ◽  
Single Mode ◽  
Power Delivery ◽  
Hollow Core ◽  
Single Mode Laser ◽  
Core Fibre ◽  
Order Of Magnitude ◽  
Beam Delivery

Abstract High power laser delivery with near-diffraction-limited beam quality, widely used in industry for precision manufacturing, is typically limited to tens of metres distances by nonlinearity-induced spectral broadening inside the glass-core delivery fibres. Anti-resonant hollow-core fibres offer not only orders-of-magnitude lower non-linearity, but also loss and modal purity comparable to conventional beam-delivery fibres. Using a single-mode hollow-core nested anti-resonant nodeless fibre (NANF) with 0.74-dB/km loss, we demonstrate delivery of 1 kW of near-diffraction-limited continuous wave laser light over an unprecedented 1-km distance, with a total throughput efficiency of ~80%. From simulations, more than one order of magnitude further improvement in transmitted power or length should be possible in such air-filled fibres, and considerably more if the core is evacuated. This paves the way to multi-kilometre, kW-scale power delivery – not only for future manufacturing and subsurface drilling, but also for new scientific possibilities in sensing, particle acceleration and gravitational wave detection.

Sign in / Sign up

Export Citation Format

Share Document