Projects per year
Abstract
We measure a record 962.5 % specularly reflected energy fraction from an
interaction with a plasma mirror surface preionised by a controlled prepulse and find that the optical quality is dependent on the inter pulse time delay. Simulations show that the main pulse reflected energy is a strong function of plasma density scale length, which increases with the time delay and reaches a peak reflectivity for a scale length of 0.3 m, which is achieved here for a pulse separation time of 3 ps. It is found that the incident laser quasi near field intensity distribution leads to nonuniformities in this plasma expansion and consequent critical surface position distribution. The plasma mirror optical quality is found to be governed by the resultant perturbations in the critical surface position, which become larger with inter pulse time delay.
interaction with a plasma mirror surface preionised by a controlled prepulse and find that the optical quality is dependent on the inter pulse time delay. Simulations show that the main pulse reflected energy is a strong function of plasma density scale length, which increases with the time delay and reaches a peak reflectivity for a scale length of 0.3 m, which is achieved here for a pulse separation time of 3 ps. It is found that the incident laser quasi near field intensity distribution leads to nonuniformities in this plasma expansion and consequent critical surface position distribution. The plasma mirror optical quality is found to be governed by the resultant perturbations in the critical surface position, which become larger with inter pulse time delay.
Original language | English |
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Article number | 033027 |
Number of pages | 10 |
Journal | New Journal of Physics |
DOIs | |
Publication status | Published - 12 Mar 2015 |
Keywords
- plasma
- optical quality
- double laser pulses
- chirped pulse amplification
Fingerprint
Dive into the research topics of 'Optimization of plasma mirror reflectivity and optical quality using double laser pulses'. Together they form a unique fingerprint.Projects
- 3 Finished
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Focusing Plasma Optics: Towards Extreme Laser Intensities
McKenna, P. (Principal Investigator)
EPSRC (Engineering and Physical Sciences Research Council)
1/07/13 → 30/06/15
Project: Research
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Advanced laser-ion acceleration strategies towards next generation healthcare
McKenna, P. (Principal Investigator)
EPSRC (Engineering and Physical Sciences Research Council)
21/05/13 → 20/05/19
Project: Research
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Multi-PetaWatt Laser-Plasma Interactions: A New Frontier in Physics
McKenna, P. (Fellow)
EPSRC (Engineering and Physical Sciences Research Council)
1/03/12 → 28/02/17
Project: Research Fellowship
Datasets
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Optimisation of plasma mirror reflectivity and optical quality using double laser pulses
McKenna, P. (Creator), University of Strathclyde, 17 Feb 2015
DOI: 10.15129/9f133297-c5ad-4997-bec5-579d31103141
Dataset