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Updated: May 19, 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

Nd:YVO4 amplifier for ultrafast low-power lasers.

Antonio Agnesi¹, Luca Carrà, Riccardo Piccoli

¹Dipartimento di Ingegneria Industriale e dell’Informazione, Via Ferrata 1, Pavia 27100, Italy. agnesi@unipv.it

|September 4, 2012

Summary

This study presents a novel Nd:YVO4 amplifier for efficient, high-power ultrafast pulse amplification. It achieves record short pulses (4 ps) at high output power (7 W), offering an alternative to existing laser technologies.

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Direct Imaging of Laser-driven Ultrafast Molecular Rotation

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Published on: February 4, 2017

Area of Science:

Laser physics and nonlinear optics
Materials science for laser gain media
Ultrafast optics and photonics

Background:

High-power amplification of ultrafast laser pulses is crucial for various scientific and industrial applications.
Nd:YVO4 (neodymium-doped yttrium orthovanadate) lasers are known for their good thermal properties and efficient operation.
Existing high-power laser systems often face limitations in pulse duration or repetition rate.

Purpose of the Study:

To design and demonstrate an efficient, diffraction-limited Nd:YVO4 amplifier for ultrafast pulses.
To investigate the amplifier's performance with different low-power ultrafast seed lasers.
To achieve high output power with short pulse durations from the Nd:YVO4 amplifier.

Main Methods:

Development of a two-module Nd:YVO4 amplifier end-pumped at 808 nm with 30 W absorbed power.
Amplification experiments using three different seeders: a 50 mW, 7 ps Nd:YVO4 oscillator, a 2 mW, 15 ps Yb fiber laser, and a 30 mW, 300 fs Nd:glass laser.
Characterization of output power, pulse duration, and beam quality.

Main Results:

Achieved up to 9.5 W output power with 8 ps pulses from a 250 MHz vanadate seeder.
Amplified a 20 MHz fiber laser seeder to 6 W output power.
Extracted Fourier-limited 4 ps pulses at 7 W output power using the femtosecond Nd:glass seeder.
Demonstrated record short pulses (<4 ps) for Nd:YVO4 lasers at output powers >= 7 W.

Conclusions:

The developed Nd:YVO4 amplifier enables efficient, high-power amplification of ultrafast pulses.
The system demonstrates a novel approach to leverage the gain bandwidth of vanadate amplifiers for high output power and short pulses.
This technology offers a promising alternative to thin disk oscillators and regenerative amplifiers for specific ultrafast applications.