Extreme laser pulse-energy measurements by means of photon momentum

0555943 - FZÚ 2023 RIV US eng J - Journal Article
Williams, P.A. - Rogers, K.A. - Divoký, Martin - Porrovecchio, G. - Tesař, J. - Šmíd, M. - Lehman, J.H.
Extreme laser pulse-energy measurements by means of photon momentum.
Optics Express. Roč. 30, č. 5 (2022), s. 7383-7393. ISSN 1094-4087
R&D Projects: GA MŠMT EF15_006/0000674
Grant - others:OP VVV - HiLASE-CoE(XE) CZ.02.1.01/0.0/0.0/15_006/0000674
Institutional support: RVO:68378271
Keywords : high-energy pulses * multi-slab laser
OECD category: Optics (including laser optics and quantum optics)
Impact factor: 3.8, year: 2022
Method of publishing: Open access

Extreme lasers capable of short, high-energy pulses are probing the frontiers of science and advancing practical technology. The utility of such lasers increases with their average power delivery, which enables faster data acquisition, higher flux of laser-driven particle and radiation sources and more efficient material processing. However, the same extreme energies and electric field strengths of these lasers are currently preventing their direct and high accuracy measurement for these experimental applications. To overcome this limitation, we use the momentum of the laser pulses as a measurement proxy for their energy. When light reflects from an ideal mirror, its momentum is transferred to the mirror, but its energy is reflected. We demonstrate here a force-sensing mirror configuration to measure laser pulse energies up to 100 J/pulse (10 ns duration, 10 Hz repetition rate) from a kilowatt-level average power multi-slab laser operated at the HiLASE.
Permanent Link: http://hdl.handle.net/11104/0330569