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High-contrast 10 fs OPCPA-based front end for multi-PW laser chains
Optics Letters
|September 16, 2017
Summary
Achieving high-power lasers requires excellent pulse quality and contrast. This study presents a front-end design for a 10 femtosecond (fs) laser system, improving contrast for multi-petawatt (PW) applications.
Area of Science:
- Laser Physics
- High-Intensity Lasers
- Ultrafast Optics
Background:
- Multi-petawatt (PW) laser applications demand high temporal pulse quality and contrast ratio (CR).
- Achieving multi-PW peak power requires ultrashort pulses with excellent spectral phase quality.
- A nanosecond contrast exceeding 1012 is essential to prevent deleterious pre-ionization effects on targets.
Purpose of the Study:
- To present a high-contrast 10 femtosecond (fs) front-end design study.
- To enable the injection of highly energetic Ti:sapphire PW lasers within the Apollon 10 PW French laser program.
Main Methods:
- Design study of a 10 fs laser front-end.
- Measurement and analysis of contrast ratio (CR) across different timescales.
- Identification of major contributions to CR at various scales.
Main Results:
- A high-contrast 10 fs front-end design was developed.
- CR was measured and analyzed, detailing contributions at different time ranges.
- The design addresses critical requirements for multi-PW laser systems.
Conclusions:
- The presented front-end design is crucial for advancing multi-PW laser capabilities.
- Understanding CR contributions is key to optimizing laser performance.
- This work supports the development of next-generation high-energy laser systems.
