EPAC is a world-class research facility currently under development at the STFC Rutherford Appleton Laboratory in the United Kingdom. It will house a titanium-doped sapphire (Ti:Sa) amplifier, which will be capable of delivering PW-level pulses at an unprecedented repetition rate of 10 Hz. Such combination of high peak power and repetition rate will be achieved by pumping the Ti:Sa amplifier with a Diode-Pumped Solid State Laser (DPSSL) based on the Central Laser Facility’s DiPOLE technology.
The Extreme Photonics Applications Centre is an upcoming state-of-the-art research facility under construction at the Rutherford Appleton Laboratory in the United Kingdom. It will deliver petawatt pulses at an unprecedented rate of 10 Hz, made possible by pumping titanium-doped sapphire gain medium with a diode-pumped solid state laser (DPSSL) based on the Central Laser Facility’s cryogenic DiPOLE technology. We will briefly present the DPSSL pump design and its incorporation into the wider PW system, reporting on the most up-todate commissioning status and results of the DPSSL pump laser, which is on target to be fully commissioned by summer 2023.
Laser amplifiers producing high energy (multi-J) nanosecond pulses at high repetition rate (multi-Hz) are required for a wide range of commercial and scientific applications. The DiPOLE concept, developed at the STFC Central Laser Facility (UK), consists in scalable, high-energy DPSSL amplifiers based on cryogenically-cooled, multi-slab ceramic Yb:YAG. In this work we discuss the most recent developments aimed at scaling the pulse repetition of new generation DiPOLE lasers from 10 Hz to 100 Hz. We present the design and current status of a 10 J, 100 Hz DiPOLE laser. We will discuss thermal management approaches adopted for this system.
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