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Related Experiment Video

Updated: Jul 9, 2026

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

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

Published on: July 12, 2017

Diode-pumped 250-W zigzag slab Nd:YAG oscillator amplifier system.

K Tei, M Kato, Y Niwa

|December 18, 2007

Summary

A high-power laser system was developed for pumping ultrashort-pulse lasers. This master oscillator power amplifier (MOPA) system achieved high pulse energy and average power, suitable for advanced laser applications.

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Construction and Characterization of External Cavity Diode Lasers for Atomic Physics

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

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Construction and Characterization of External Cavity Diode Lasers for Atomic Physics

Construction and Characterization of External Cavity Diode Lasers for Atomic Physics

Published on: April 24, 2014

Area of Science:

Laser Physics
Nonlinear Optics
Materials Science

Background:

Ultrashort-pulse laser systems require high-power pump sources.
Master oscillator power amplifier (MOPA) architectures are crucial for achieving high energy and power levels.
Efficient pumping is essential for optimizing laser system performance.

Purpose of the Study:

To develop a laser-diode-pumped zigzag slab Neodymium-doped Yttrium Aluminum Garnet (Nd:YAG) MOPA system.
To achieve high pulse energy and high average power for pumping ultrashort-pulse lasers.
To characterize the performance and suitability of the MOPA system for pumping applications.

Main Methods:

The MOPA system comprised an oscillator, preamplifier, and two angle-multiplexed ring-type double-pass postamplifiers.
Image-relay telescopes were employed for beam manipulation.
A Lithium Triborate (LiB3O5 or LBO) crystal was used for frequency doubling.

Main Results:

The Nd:YAG MOPA system achieved a pulse energy of 1.26 J and an average power of 251 W at a 200 Hz repetition rate.
A frequency-doubled power of 105 W was obtained at a 170 Hz repetition rate using the LiB3O5 crystal.
The intensity profiles of the fundamental and second harmonic were nearly top-hat shaped, indicating suitability for pumping.

Conclusions:

The developed laser-diode-pumped Nd:YAG MOPA system effectively delivers high pulse energy and average power.
The system's output characteristics, including top-hat intensity profiles, are well-suited for pumping ultrashort-pulse laser systems.
This MOPA system represents a significant advancement in high-power laser technology for demanding applications.