Related Experiment Video
Updated: Mar 7, 2026
10:17
20 mJ, 1 ps Yb:YAG Thin-disk Regenerative Amplifier
Published on: July 12, 2017
12.1K
Direct diode pumped Ti:sapphire ultrafast regenerative amplifier system.
Optics Express
|March 1, 2017
Summary
We developed a direct diode-pumped Ti:sapphire ultrafast regenerative amplifier laser system. This power-scalable architecture enables demanding applications like extreme ultraviolet generation without complex pulse compression.
Area of Science:
- Laser Physics and Photonics
- Ultrafast Science
- Quantum Optics
Background:
- Traditional Ti:sapphire amplifiers face limitations in power scalability and complexity for advanced applications.
- Ultrafast laser systems are crucial for scientific research, including high-harmonic generation and materials processing.
- Continuous-wave (CW) pumping offers potential advantages for laser amplifier stability and efficiency.
Purpose of the Study:
- To demonstrate a novel, power-scalable, continuous-wave (CW) pumped Ti:sapphire ultrafast regenerative amplifier.
- To enable demanding ultrafast applications, such as coherent extreme ultraviolet (EUV) generation, without post-amplification pulse compression.
- To explore the potential of this architecture for both ultrafast laser applications and tunable CW sources.
Main Methods:
- Direct diode-pumping of a Ti:sapphire gain medium using high-brightness, fiber-coupled 450nm laser diodes.
- Implementation of cryogenic cooling for the Ti:sapphire crystal to manage thermal effects and enhance performance.
- Development of a CW-pumped regenerative amplifier architecture for ultrafast pulse amplification.
Main Results:
- Achieved multi-microjoule (μJ) pulse energies at repetition rates from 50 to 250 kHz.
- Demonstrated a power-scalable architecture suitable for direct application in demanding ultrafast laser systems.
- Successfully generated high-harmonic extreme ultraviolet (EUV) radiation without requiring complex post-amplification pulse compression.
Conclusions:
- The developed direct diode-pumped, cryogenically cooled Ti:sapphire regenerative amplifier represents a significant advancement in ultrafast laser technology.
- This power-scalable CW-pumped architecture overcomes previous limitations, paving the way for new possibilities in ultrafast science and EUV generation.
- The system shows promise for future developments in both ultrafast laser applications and tunable CW laser sources.
