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Multiterawatt laser system based on optical parametric chirped pulse amplification.

Xiaodong Yang, Zhi-Zhan Xu, Yu-Xin Leng

|November 21, 2007

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Researchers developed a compact multiterawatt laser using optical parametric chirped pulse amplification. This system achieved a record 3.67 TW peak power, advancing high-power laser technology.

Area of Science:

High-intensity laser physics
Nonlinear optics

Background:

Optical parametric chirped pulse amplification (OPCPA) is a key technology for generating high-power laser pulses.
Existing systems face limitations in scalability and compactness.

Purpose of the Study:

To demonstrate a compact multiterawatt laser system utilizing OPCPA.
To achieve record-breaking output power levels.

Main Methods:

Employed a hybrid Nd:YAG-Nd:glass laser system for pumping.
Utilized two lithium triborate (LBO) optical parametric preamplifiers.
Incorporated a potassium dihydrogen phosphate (KDP) optical parametric power amplifier.

Main Results:

Achieved amplification of chirped pulses from 20 pJ to 900 mJ.

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20 mJ, 1 ps Yb:YAG Thin-disk Regenerative Amplifier

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Direct Imaging of Laser-driven Ultrafast Molecular Rotation

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Generated 570 mJ, 155 fs pulses with a peak power of 3.67 TW.

Demonstrated the highest output power from an OPCPA laser to date.

Conclusions:

The developed compact OPCPA system is capable of producing unprecedented peak power.
This advancement has significant implications for high-field science and laser technology.