Double-pass Pre-chirp managed amplification with high gain and high average power

2021 ◽  
Author(s):  
Yao Zhang ◽  
Jingshang Wang ◽  
Hao Teng ◽  
SHAOBO FANG ◽  
Junli Wang ◽  
...  
Keyword(s):  
Average Power ◽  
High Gain ◽  
High Average Power ◽  
Double Pass

scholarly journals An Eye-Safe, SBS-Free Coherent Fiber Laser LIDAR Transmitter with Millijoule Energy and High Average Power

Photonics ◽  
2021 ◽  
Vol 8 (1) ◽  
pp. 15
Author(s):  
Mehmetcan Akbulut ◽  
Leonid Kotov ◽  
Kort Wiersma ◽  
Jie Zong ◽  
Maohe Li ◽  
...  
Keyword(s):  
Fiber Laser ◽  
Repetition Rate ◽  
Peak Power ◽  
Figure Of Merit ◽  
Current System ◽  
Glass Fibers ◽  
Average Power ◽  
High Gain ◽  
Short Length ◽  
High Average Power

We report on an eye-safe, transform-limited, millijoule energy, and high average power fiber laser. The high gain and short length of the NP phosphate-glass fibers enable the SBS-free operation with kW level peak power. The output energy is up to 1.3 mJ, and the average power is up to 23 W at an 18 kHz repetition rate with 600 ns pulses (peak power > 2.1 kW). The PER is ≈16 dB and the M2 of the beam is 1.33 × 1.18. The coherent LIDAR Figure Of Merit (FOM) is 174 mJ*sqrt(Hz), which to our knowledge is the highest reported for a fiber laser. We also report 0.75 mJ energy and >3.7 kW peak power with down to 200 ns pulses and up to 1.21 mJ energy with a 3–5 kHz repetition rate operation of the current system.

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.

High-gain Yb:YAG amplifier for ultrashort pulse laser at high-average power

2016 ◽  
Author(s):  
John Vetrovec ◽  
Drew A. Copeland ◽  
Amardeep S. Litt ◽  
Detao Du
Keyword(s):  
Pulse Laser ◽  
Ultrashort Pulse ◽  
Average Power ◽  
High Gain ◽  
High Average Power ◽  
Ultrashort Pulse Laser

High-gain, reflection-double pass, Ti:sapphire continuous-wave amplifier delivering 5.77 W average power, 82 MHz repetition rate, femtosecond pulses

2000 ◽  
Vol 76 (22) ◽  
pp. 3182-3184 ◽  
Author(s):  
Zhenlin Liu ◽  
Hidetoshi Murakami ◽  
Toshimasa Kozeki ◽  
Hideyuki Ohtake ◽  
Nobuhiko Sarukura
Keyword(s):  
Repetition Rate ◽  
Continuous Wave ◽  
Average Power ◽  
High Gain ◽  
Femtosecond Pulses ◽  
Double Pass

Dual-pass Pre-chirp managed amplification with high gain and high average power

2021 ◽  
Author(s):  
Yao Zhang ◽  
Jingshang Wang ◽  
Hao Teng ◽  
Shaobo Fang ◽  
Junli Wang ◽  
...  
Keyword(s):  
Average Power ◽  
High Gain ◽  
High Average Power ◽  
Dual Pass

A New Type S-band High-average-power Broadband Klystron

2011 ◽  
Vol 33 (7) ◽  
pp. 1727-1732 ◽  
Author(s):  
Zhao-chuan Zhang ◽  
Bao-li Shen ◽  
Xiao-juan Yu ◽  
Feng Zhang ◽  
Yun-ping Huang
Keyword(s):  
Average Power ◽  
High Average Power ◽  
New Type
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