scholarly journals Nonlinear temporal pulse cleaning techniques and application

2013 ◽  
Vol 1 (2) ◽  
pp. 98-101 ◽  
Author(s):  
Yi Xu ◽  
Jianzhou Wang ◽  
Yansui Huang ◽  
Yanyan Li ◽  
Xiaomin Lu ◽  
...  
Keyword(s):  
Contrast Enhancement ◽  
Second Harmonic ◽  
Laser System ◽  
Temporal Contrast ◽  
Chirped Pulse ◽  
Pulse Amplification ◽  
Optical Parametric ◽  
Laser Systems ◽  
Pulse Amplifier ◽  
Chirped Pulse Amplification

AbstractTwo different pulse cleaning techniques for ultra-high contrast laser systems are comparably analysed in this work. The first pulse cleaning technique is based on noncollinear femtosecond optical-parametric amplification (NOPA) and second-harmonic generation (SHG) processes. The other is based on cross-polarized wave (XPW) generation. With a double chirped pulse amplifier (double-CPA) scheme, although temporal contrast enhancement in a high-intensity femtosecond Ti:sapphire chirped pulse amplification (CPA) laser system can be achieved based on both of the techniques, the two different pulse cleaning techniques still have their own advantages and are suitable for different contrast enhancement requirements of different laser systems.

scholarly journals Generation of high-contrast, joule-level pulses based on Nd:glass chirped pulse amplification laser

2016 ◽  
Vol 4 ◽  
Author(s):  
Xiaoming Lu ◽  
Yujie Peng ◽  
Yanyan Li ◽  
Xinliang Wang ◽  
Xiaoyang Guo ◽  
...  
Keyword(s):  
Laser System ◽  
High Energy ◽  
High Contrast ◽  
Temporal Contrast ◽  
Chirped Pulse ◽  
Pulse Amplification ◽  
Optical Parametric ◽  
Chirped Pulse Amplification ◽  
System Operating ◽  
Nd:Glass Laser

We demonstrate a high-contrast, joule-level Nd:glass laser system operating at 0.5 Hz repetition rate based on a double chirped pulse amplification (CPA) scheme. By injecting high-contrast, high-energy seed pulses into the Nd:glass CPA stage, the pulse energy is amplified to 1.9 J through two optical parametric CPA stages and two Nd:glass amplifiers. The temporal contrast of compressed pulse is measured down to the level of $10^{-8}$ at tens of ps, and $10^{-10}$ near 200 ps before the main pulse, respectively.

Compact 0.56 Petawatt laser system based on optical parametric chirped pulse amplification in KD*P crystals

2007 ◽  
Vol 4 (6) ◽  
pp. 421-427 ◽  
Author(s):  
V V Lozhkarev ◽  
G I Freidman ◽  
V N Ginzburg ◽  
E V Katin ◽  
E A Khazanov ◽  
...  
Keyword(s):  
Laser System ◽  
Chirped Pulse ◽  
Pulse Amplification ◽  
Optical Parametric ◽  
Chirped Pulse Amplification

scholarly journals Spectral gain investigation of large size OPCPA based on partially deuterated KDP

2018 ◽  
Vol 167 ◽  
pp. 01006 ◽  
Author(s):  
Marco Galimberti ◽  
Alexis Boyle ◽  
Ian O. Musgrave ◽  
Pedro Oliveira ◽  
Dave Pepler ◽  
...  
Keyword(s):  
Nonlinear Crystal ◽  
Laser System ◽  
Phase Matching ◽  
Small Signal Gain ◽  
Small Signal ◽  
Chirped Pulse ◽  
Pulse Amplification ◽  
Large Size ◽  
Optical Parametric ◽  
Chirped Pulse Amplification

The Optical Parametric Chirped Pulse Amplification is one of the most promising techniques to deliver 20PW laser system. The already available KD*P in large size is a good candidate as nonlinear crystal. In this article we report the experimental analysis of the spectral small signal gain for KD*P at 70% deuteration level for different phase matching and non-collinear angle. The data is also compared with a theoretical model.

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