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High-power Lyman-alpha source generated with an ArF excimer laser.

S A Meyer, G W Faris

|December 18, 2007

Summary

This summary is machine-generated.

Researchers achieved high-power vacuum-ultraviolet (VUV) generation at the Lyman-alpha wavelength using a simple experimental setup. This breakthrough in VUV radiation opens new possibilities for scientific applications.

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Area of Science:

Atomic, Molecular, and Optical Physics
Laser Physics and Photonics
Ultrafast Science

Background:

Vacuum-ultraviolet (VUV) radiation is crucial for various scientific applications.
Efficient generation of VUV light, especially at specific wavelengths like Lyman-alpha, remains a challenge.
Existing methods often require complex or large-scale experimental setups.

Purpose of the Study:

To report the generation of high-power VUV radiation at the Lyman-alpha wavelength (121.6 nm).
To demonstrate a simple and efficient experimental system for VUV generation.
To explore the potential for optimizing VUV power and tuning range.

Main Methods:

Utilized two-photon-resonant difference-frequency mixing.
Employed a tunable ArF excimer laser and a Nd:YAG-pumped dye laser.
Used phase-matched mixtures of Krypton (Kr) and Argon (Ar) at a total pressure of 650 mbar.

Main Results:

Achieved 7-microJ energies at the Lyman-alpha wavelength (121.6 nm) with pulse durations of approximately 5 ns (1.3 kW).
Direct energy measurements confirmed the high output power using a pyroelectric energy probe.
Demonstrated a tuning range of 0.1 nm for a fixed gas mole fraction at 650 mbar total pressure.

Conclusions:

The study successfully demonstrates a simple yet effective method for high-power VUV generation at Lyman-alpha.
Results indicate that further system optimization could lead to even higher VUV powers.
The achieved tuning range and power levels show promise for advanced spectroscopic and material science applications.