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

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Terawatt diode-pumped Yb:CaF2 laser.

Mathias Siebold¹, Marco Hornung, Ragnar Boedefeld

¹Institute of Optics and Quantum Electronics, FSU Jena, Max-Wien-Platz 1, 07743 Jena, Germany. mathias.siebold@gmx.de

|November 28, 2008

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Researchers developed the first terawatt diode-pumped laser using Ytterbium-doped Calcium Fluoride (Yb:CaF2) crystals. This laser system achieved a peak power of 1 terawatt (TW), demonstrating significant advancements in high-power laser technology.

Area of Science:

Laser physics
Materials science
Photonics

Background:

High-power lasers are crucial for scientific research and industrial applications.
Developing compact and efficient high-power laser systems remains a significant challenge.
Diode-pumped solid-state lasers offer advantages in efficiency and scalability.

Purpose of the Study:

To demonstrate the first terawatt (TW) diode-pumped laser system.
To utilize single-crystalline Ytterbium-doped Calcium Fluoride (Yb:CaF2) as the gain medium.
To achieve high pulse energy and peak power for femtosecond and nanosecond pulses.

Main Methods:

Employing a diode-pumped laser architecture.
Utilizing single-crystalline Yb:CaF2 as the amplifying medium.

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Seeding with stretched femtosecond pulses and subsequent recompression.

Generating nanosecond pulses.

Main Results:

Achieved a maximum pulse energy of 420 mJ at 1 Hz repetition rate for femtosecond pulses.
Obtained a peak power of 1 terawatt (TW) with a pulse duration of 192 fs.
Generated nanosecond pulses with energies up to 905 mJ without optical damage.

Conclusions:

Single-crystalline Yb:CaF2 is a viable and effective gain medium for high-power, diode-pumped laser systems.
The developed TW laser system represents a significant advancement in laser technology.
The system's ability to generate both high-energy femtosecond and nanosecond pulses opens new possibilities for applications.