150 J DPSSL operating at 1.5 kW level

Divoký, Martin; Pilař, Jan; Hanuš, Martin; Navrátil, Petr; Denk, Ondřej; Severová, Patricie; Mason, Paul; Butcher, Thomas; Banerjee, Saumyabrata; Vido, Mariastefania De; Edwards, Chris; Collier, J.; Smrž, Martin; Mocek, Tomáš

doi:10.1364/ol.444902

Cited by 48 publications

(15 citation statements)

References 16 publications

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“…Once the required pump energy is reduced to less than ≈1/10, e.g., 50-100 J nanosecond pulses centered at 515/527 nm, the cryogenic gas-cooled diode pumped Yb:YAG lasers can meet the require-ment and importantly which now can operate at 1-10 Hz. [365][366][367] In this case, dramatically reducing pulse duration can realize the high-repetition short-pulse PW laser.…”

Section: Discussionmentioning

confidence: 99%

Further Development of the Short‐Pulse Petawatt Laser: Trends, Technologies, and Bottlenecks

Leng

2022

Laser & Photonics Reviews

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The petawatt (PW) laser has experienced a rapid development in the past two decades, and tens of giant facilities have been constructed worldwide. After realizing 10–100 PW, it seems to be close to some sort of engineering limit but its focused peak intensity still is much lower than the Schwinger limit, and therefore some technology improvements or innovations become indispensable for further increasing the peak power as well as the focused peak intensity. By quick reviewing the development of the PW laser in history, it is shown that reducing the pulse duration to near a single optical cycle is a feasible (easy and cheap) choice for this purpose. Here, technologies for the optical‐cycle pulse generation, ultrabroadband amplification, and capability boosting that aim to provide possible approaches for optical‐cycle PW lasers are briefly reviewed and discussed. Meanwhile, key bottlenecks that challenge the current as well as the future short‐pulse PW lasers and their possible solutions are summarized and discussed. This technology review aims to provide a possible roadmap for the next‐stage development of the short‐pulse PW laser.

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Section: Discussionmentioning

confidence: 99%

Further Development of the Short‐Pulse Petawatt Laser: Trends, Technologies, and Bottlenecks

Leng

2022

Laser & Photonics Reviews

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“…This laser is based on the Scalable High power Advanced Radiographic Capability (SHARC) laser concept [3], and it implements direct chirped pulse amplification (CPA) in the diode-pumped, gas-cooled slab architecture developed for the Mercury laser [4] and implemented in the pump laser for the HAPLS laser system [5]. Helium gas-cooling was also employed in the Bivoj/DiPOLE laser system based on diode-pumped Yb:YAG at cryogenic temperature that has been demonstrated to produce 146 J, 10 ns duration pulses at 10 Hz repetition rate [6]. A high-level, conceptual rendering of the laser system with the major subsystems overlaid is shown in Figure 2(a), and a block diagram of the laser system is shown in Figure 2(b).…”

Section: Laser Architecturementioning

confidence: 99%

High repetition rate, high energy petawatt laser for the matter in extreme conditions upgrade

Reagan

Albrecht²,

Alessi³

et al. 2023

High Power Lasers for Fusion Research VII

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The Matter in Extreme Conditions Upgrade (MEC-U) project is a major upgrade to the MEC instrument on the Linac Coherent Light Source (LCLS) X-ray free electron laser (XFEL) user facility at SLAC National Accelerator Laboratory. The MEC instrument combines the XFEL with a high-power, short-pulse laser and high energy shock driver laser to produce and study high energy density plasmas and materials found in extreme environments such as the interior of stars and fusion reactors, providing the fundamental understanding needed for applications ranging from astronomy to fusion energy. When completed, this project will significantly increase the power and repetition rate of the MEC high intensity laser system to the petawatt level at up to 10 Hz, increase the energy of the shock-driver laser to the kilojoule level, and expand the capabilities of the MEC instrument to support groundbreaking experiments enabled by the combination of high-power lasers with the world's brightest X-ray source. Lawrence Livermore National Laboratory (LLNL) is developing a directly diode-pumped, 10 Hz repetition rate, 150 J, 150 fs, 1 PW laser system to be installed in the upgraded MEC facility. This laser system is an implementation of LLNL's Scalable High power Advanced Radiographic Capability (SHARC) concept and is based on chirped pulse amplification in the diode-pumped, gas-cooled slab architecture developed for the Mercury and HAPLS laser systems. The conceptual design and capabilities of this laser system will be presented.

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“…The output beam is square-shaped 75 × 75 mm 2 . It is the first kilowatt-class high energy laser 13 , 14 that recently increased its output power to almost 1.5 kW 15 .…”

Section: Introductionmentioning

confidence: 99%

Thermal-stress-induced birefringence management of complex laser systems by means of polarimetry

Slezák

Sawicka-Chyla

Divoký

et al. 2022

Sci Rep

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The novel method of the thermally-induced polarization changes driven power losses (TIPCL) analysis in the complex laser systems has been developed. The measurement has been tested on the amplifier chain of the 100 J / 10 Hz laser system ‘Bivoj’ operated at HiLASE Centre. By the usage of the measured non-uniform Mueller matrix of the amplifier chain, the optimization of the ideal input and output polarization state has been calculated numerically. The results of the optimization have been applied to the laser system, thus reducing the TIPCL from originally observed more than 33% to 7.9% for CW beam and to 9% for pulsed laser beam, respectively. To the best of our knowledge, this result represents the most efficient TIPCL suppression method for complex laser systems so far. The method also allows the definition of the ideal fully polarized non-uniform pre-compensation of input beam consequently suffering from zero TIPCL.

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150 J DPSSL operating at 1.5 kW level

Cited by 48 publications

References 16 publications

Further Development of the Short‐Pulse Petawatt Laser: Trends, Technologies, and Bottlenecks

Further Development of the Short‐Pulse Petawatt Laser: Trends, Technologies, and Bottlenecks

High repetition rate, high energy petawatt laser for the matter in extreme conditions upgrade

Thermal-stress-induced birefringence management of complex laser systems by means of polarimetry

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