scholarly journals High-average-power free-electron lasers: a new laser source for materials processing

2000 ◽  
Author(s):  
Michelle D. Shinn
Keyword(s):  
Free Electron ◽  
Average Power ◽  
Materials Processing ◽  
Laser Source ◽  
Free Electron Lasers ◽  
High Average Power

High average power free-electron lasers

2012 ◽  
Vol 52 (2) ◽  
pp. 021013
Author(s):  
Joseph Blau ◽  
Keith Cohn ◽  
William B. Colson
Keyword(s):  
Free Electron ◽  
Average Power ◽  
Free Electron Lasers ◽  
High Average Power

scholarly journals Direct Amplification of High Energy Pulsed Laser in Fiber-Single Crystal Fiber with High Average Power

Crystals ◽  
2019 ◽  
Vol 9 (4) ◽  
pp. 216
Author(s):  
Feng Li ◽  
Zhi Yang ◽  
Zhiguo Lv ◽  
Yang Yang ◽  
Yishan Wang ◽  
...  
Keyword(s):  
Laser Pulse ◽  
Single Crystal ◽  
Stimulated Raman Scattering ◽  
Average Power ◽  
High Energy ◽  
Laser Source ◽  
High Average Power ◽  
Double Pass ◽  
Two Stage ◽  
Crystal Fiber

A laser master oscillator power amplifier (MOPA) system consisting of a fiber amplifier and a two-stage Yb:YAG single crystal fiber (SCF) is experimentally studied. The nonlinear stimulated Raman scattering (SRS) is avoided by limiting the output power of the fiber preamplifier to 600 mW. Due to the benefit from the low nonlinearity and high amplification gain of the SCF, a laser pulse duration of 16.95 ps and a high average power of 41.7 W at a repetition rate of 250 kHz are obtained by using a two-stage polarization controlled double-pass amplification of Yb:YAG SCF, corresponding to an output energy of 166.8 μJ and a peak power of 9.84 MW, respectively. The polarization controlled SCF amplification scheme achieved a gain as high as more than 69 times. During the amplification, the spectra gain narrowing effect and the polarization controlled four-pass amplification setup are also studied. The laser spectrum is narrowed from over 10 nm to less than 3 nm, and the pulse width is also compressed to hundreds of femtosecond by dechirping the laser pulse. This compact-sized, cost-effective laser source can be used in laser micromachining, or as the seeder source for generating much higher power and energy laser for scientific research. For some applications which need femtosecond laser, this laser source can also be compressed to femtosecond regime.

scholarly journals High average power 88  W OPCPA system for high-repetition-rate experiments at the LCLS x-ray free-electron laser

2019 ◽  
Vol 44 (5) ◽  
pp. 1257 ◽  
Author(s):  
Katalin Mecseki ◽  
Matthew K. R. Windeler ◽  
Alan Miahnahri ◽  
Joseph S. Robinson ◽  
James M. Fraser ◽  
...  
Keyword(s):  
Free Electron ◽  
Repetition Rate ◽  
Free Electron Laser ◽  
Average Power ◽  
High Repetition Rate ◽  
High Average Power ◽  
X Ray ◽  
High Repetition
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