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  • Received: Feb. 12, 2020

    Accepted: Apr. 2, 2020

    Posted: May. 21, 2020

    Published Online: May. 21, 2020

    The Author Email: Saumyabrata Banerjee (saumyabrata.banerjee@stfc.ac.uk)

    DOI: 10.1017/hpl.2020.20

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    Saumyabrata Banerjee, Paul Mason, Jonathan Phillips, Jodie Smith, Thomas Butcher, Jacob Spear, Mariastefania De Vido, Gary Quinn, Danielle Clarke, Klaus Ertel, Cristina Hernandez-Gomez, Chris Edwards, John Collier. Pushing the boundaries of diode-pumped solid-state lasers for high-energy applications[J]. High Power Laser Science and Engineering, 2020, 8(2): 02000e20

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3D model of D100X laser showing FE front end; BT beam transport; PA room-temperature pre-amplifier (1 Yb:CaF2 regenerative, 2 Yb:YAG multi-pass); MA main cryogenic amplifier (1 stage 1, 2 stage 2); CGC cryogenic gas coolers; D 940 nm diode pumps (1 & 2 for MA-1, 3 & 4 for MA-2). The inset shows the far-field image recorded at 105 J, 10 Hz operation.

Fig. 1. 3D model of D100X laser showing FE  front end; BT  beam transport; PA  room-temperature pre-amplifier (1  Yb:CaF2 regenerative, 2  Yb:YAG multi-pass); MA  main cryogenic amplifier (1  stage 1, 2  stage 2); CGC  cryogenic gas coolers; D  940 nm diode pumps (1 & 2 for MA-1, 3 & 4 for MA-2). The inset shows the far-field image recorded at 105 J, 10 Hz operation.

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(a) Example of automatic pulse shaping capability of the D100X laser for achieving a flat-top temporal profile at75 J, 10 Hz operation;(b) long-term stability over 6 h at 10 Hz.

Fig. 2. (a) Example of automatic pulse shaping capability of the D100X laser for achieving a flat-top temporal profile at75 J, 10 Hz operation;(b) long-term stability over 6 h at 10 Hz.

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(a) Output energetics, experimentally measured (circle) and numerically calculated (dotted lines); (b) long-term operation at 150 J, 1 Hz, and the inset shows the near-field profile at 150 J, 1 Hz operation; (c) temporal profile of the front end (FE), main-amplifier 1 (MA1) and main-amplifier 2 (MA2) during 150 J, 1 Hz operation.

Fig. 3. (a) Output energetics, experimentally measured (circle) and numerically calculated (dotted lines); (b) long-term operation at 150 J, 1 Hz, and the inset shows the near-field profile at 150 J, 1 Hz operation; (c) temporal profile of the front end (FE), main-amplifier 1 (MA1) and main-amplifier 2 (MA2) during 150 J, 1 Hz operation.

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