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

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Third-harmonic generation using an ultrahigh-spectral-brightness ArF source.

H Pummer, T Srinivasan, H Egger

|August 28, 2009

Summary

This summary is machine-generated.

Researchers generated tunable coherent radiation near 64 nm using third-harmonic generation from an ultrahigh-spectral-brightness Argon Fluoride (ArF*) source. This method achieved peak powers up to 30 W in gaseous media.

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Published on: February 4, 2017

Area of Science:

Laser Physics
Nonlinear Optics
Quantum Electronics

Background:

Ultrahigh-spectral-brightness sources are crucial for advanced light generation.
Third-harmonic generation (THG) is a key nonlinear optical process for frequency conversion.
Producing coherent radiation at shorter wavelengths presents significant challenges.

Purpose of the Study:

To demonstrate tunable coherent radiation generation at 64 nm.
To utilize third-harmonic generation (THG) with an ArF* source.
To optimize THG in simple gaseous media while minimizing absorption losses.

Main Methods:

Employed an ultrahigh-spectral-brightness ArF* laser source with specific performance parameters (300 mJ pulse energy, ~7 nsec pulse duration, <260 MHz spectral width, ~5x15 microrad beam divergence, up to 10 Hz repetition rate).
Utilized third-harmonic generation (THG) in various simple gaseous media.
Implemented an apparatus designed to eliminate photoabsorption of the generated third harmonic in differential pumping stages.

Main Results:

Successfully produced tunable coherent radiation in the vicinity of 64 nm.
Achieved peak powers up to 30 W for the third harmonic.
Demonstrated the effectiveness of THG using the specified ArF* source parameters in gaseous media.

Conclusions:

Third-harmonic generation of an ultrahigh-spectral-brightness ArF* source is an effective method for producing tunable coherent radiation at 64 nm.
The experimental setup successfully mitigated photoabsorption losses, enabling efficient THG.
This work advances the capabilities for generating coherent light in the vacuum ultraviolet region.