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The Dynamic Compression Sector laser: A 100-J UV laser for dynamic compression research
1Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623-1299, USA.
The Review of Scientific Instruments
|June 3, 2019
Summary
The Dynamic Compression Sector (DCS) laser is a powerful new tool for studying materials under extreme pressures. This 100-J ultraviolet laser system enables advanced research in high-energy-density physics.
Area of Science:
- High-energy-density physics
- Materials science under extreme conditions
- Pulsed laser systems
Background:
- The Dynamic Compression Sector (DCS) laser facility at Argonne National Laboratory's Advanced Photon Source is crucial for materials research.
- Understanding material behavior under extreme dynamic pressures requires specialized experimental tools.
Purpose of the Study:
- To introduce the 100-J ultraviolet Nd:glass Dynamic Compression Sector (DCS) laser system.
- To detail the laser's design and capabilities for generating shock pressures in materials.
- To highlight its role in advanced materials research.
Main Methods:
- The DCS laser system utilizes a Nd:glass amplifier chain, including regenerative, rod, and disk amplifiers.
- Frequency tripling converts the 1053 nm output to 351 nm using KDP crystals.
- Advanced optics, including a distributed phase plate and aspherical lens, shape the beam to a super-Gaussian profile.
- Beam smoothing techniques, such as spectral dispersion and polarization smoothing, achieve high uniformity.
Main Results:
- The laser system is designed to deposit 100 J of energy onto a target.
- Adjustable spot sizes of 250, 500, and 1000 μm are achievable.
- The system achieved a root-mean-square intensity variation on target of ±8.7% through advanced beam smoothing.
Conclusions:
- The DCS laser is a significant advancement for studying dynamic material properties.
- Its capabilities support a wide range of high-pressure research experiments.
- The system's design principles are informed by larger-scale laser facilities like OMEGA and NIF.
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