DiPOLE100: A 100 J, 10 Hz DPSSL using cryogenic gas cooled Yb:YAG multi slab amplifier technology

Paul D. Mason; Saumyabrata Banerjee; Klaus Ertel; P. Jonathan Phillips; Thomas J. Butcher; Jodie M. Smith; Mariastefania De Vido; Stephanie Tomlinson; Oleg Chekhlov; Waseem Shaikh; Steve Blake; Paul Holligan; Martin Divoky; Jan Pilar; Cristina Hernandez-Gomez; Justin Greenhalgh; John L. Collier

doi:10.1117/12.2180086

12 May 2015 DiPOLE100: A 100 J, 10 Hz DPSSL using cryogenic gas cooled Yb:YAG multi slab amplifier technology

Paul D. Mason, Saumyabrata Banerjee, Klaus Ertel, P. Jonathan Phillips, Thomas J. Butcher, Jodie M. Smith, Mariastefania De Vido, Stephanie Tomlinson, Oleg Chekhlov, Waseem Shaikh, Steve Blake, Paul Holligan, Martin Divoky, Jan Pilar, Cristina Hernandez-Gomez, Justin Greenhalgh, John L. Collier

Author Affiliations +

Proceedings Volume 9513, High-Power, High-Energy, and High-Intensity Laser Technology II; 951302 (2015) https://doi.org/10.1117/12.2180086
Event: SPIE Optics + Optoelectronics, 2015, Prague, Czech Republic

Abstract

In this paper we provide an overview of the design of DiPOLE100, a cryogenic gas-cooled DPSSL system based on Yb:YAG multi-slab amplifier technology, designed to efficiently produce 100 J pulses, between 2 and 10 ns in duration, at up to 10 Hz repetition rate. The current system is being built at the CLF for the HiLASE project and details of the front end, intermediate 10J cryo-amplifier and main 100J cryo-amplifier are presented. To date, temporal and spatial pulse shaping from the front end has been demonstrated, with 10 ns pulses of arbitrary shape (flat-top, linear ramps, and exponentials) produced with energies up to 150 mJ at 10 Hz. The pump diodes and cryogenic gas cooling system for the 10J cryo-amplifier have been fully commissioned and laser amplification testing has begun. The 100J, 940 nm pump sources have met full specification delivering pulses with 250 kW peak power and duration up to 1.2 ms at 10 Hz, corresponding to 3 kW average power each. An intensity modulation across the 78 mm square flat-top profile of < 5 % rms was measured. The 100J gain media slabs have been supplied and their optical characteristics tested. Commissioning of the 100J amplifier will commence shortly.

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Paul D. Mason, Saumyabrata Banerjee, Klaus Ertel, P. Jonathan Phillips, Thomas J. Butcher, Jodie M. Smith, Mariastefania De Vido, Stephanie Tomlinson, Oleg Chekhlov, Waseem Shaikh, Steve Blake, Paul Holligan, Martin Divoky, Jan Pilar, Cristina Hernandez-Gomez, Justin Greenhalgh, and John L. Collier "DiPOLE100: A 100 J, 10 Hz DPSSL using cryogenic gas cooled Yb:YAG multi slab amplifier technology", Proc. SPIE 9513, High-Power, High-Energy, and High-Intensity Laser Technology II, 951302 (12 May 2015); https://doi.org/10.1117/12.2180086

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