” If we achieve very brief pulses, we get in relativistic issue classes. This is an incredibly interesting direction that has the potential to take the scientific community to new horizons,” states Professor Kieffer. “It was a really great piece of work solidifying the critical capacity of this method,” concludes Gérard Mourou.
Referral: “Thin plate compression of a sub-petawatt Ti: Sa laser pulses” by S. Yu. Mironov, S. Fourmaux, P. Lassonde, V. N. Ginzburg, S. Payeur, J.-C. Kieffer, E. A. Khazanov and G. Mourou, 15 June 2020, Applied Physics Letters.DOI: 10.1063/ 5.0008544.
The paper “Thin plate compression of a sub-petawatt Ti: Sa laser pulses” made the cover of the journal Applied Physics Letters, Volume 116, Issue 24 released June 15, 2020. Credit: AIP Publishing
Rather than increasing the energy of the laser, they reduce the pulse duration to only a couple of femtoseconds. “A laser beam is sent through a perfectly homogeneous and very thin glass plate. “We would be amongst the very first in the world to accomplish this level of power with a laser that has such short pulses,” states Professor Kieffer.
They have gotten monetary assistance from the Natural Sciences and Engineering Research Council of Canada, the Canada Foundation for Innovation, the ministère de lÉconomie, de la Science et de lInnovation du Québec and the Ministry of Science and Higher Education of the Russian Federation.
Scientist Jean-Claude Kieffer of the Institut national de la recherche scientifique (INRS), E. A. Khazanov of the Institute of Applied Physics of the Russian Academy of Sciences and in France Gérard Mourou, Professor Emeritus of the Ecole Polytechnique, who was granted the Nobel Prize in Physics in 2018, have chosen another direction to attain a power of around 10 ^ 23 Watts (W). Instead of increasing the energy of the laser, they decrease the pulse period to just a few femtoseconds. This would keep the system within a reasonable size and keep operating expenses down.
INRS Professor Jean-Claude Kieffer is considered a leader in Canada and is globally understood in the field of science and ultra rapid laser technology. Credit: INRS
Recommendation: “Thin plate compression of a sub-petawatt Ti: Sa laser pulses” by S. Yu.
Installed in the Advanced Laser Light Source (ALLS) facility at INRS, the scientists restricted themselves to an energy of 3 joules for a 10-femtosecond pulse, or 300 terawatts (1012W). They plan to repeat the explore an energy of 13 joules over 5 femtoseconds, or a strength of 3 petawatts (1015 W). “We would be amongst the very first on the planet to accomplish this level of power with a laser that has such brief pulses,” states Professor Kieffer.
To generate the quickest possible pulse, the scientists are making use of the impacts of non-linear optics. “A laser beam is sent out through a perfectly homogeneous and incredibly thin glass plate. The specific behaviour of the wave inside this solid medium widens the spectrum and enables for a much shorter pulse when it is recompressed at the exit of the plate,” discusses Jean-Claude Kieffer, co-author of the research study released online on June 15, 2020, in the journal Applied Physics Letters.
A global team of scientists has actually demonstrated an innovative technique for increasing the strength of lasers.
In a paper that made the cover of the journal Applied Physics Letters, a worldwide team of scientists has actually demonstrated an ingenious method for increasing the strength of lasers. This approach, based upon the compression of light pulses, would make it possible to reach a limit intensity for a new type of physics that has actually never ever been explored prior to: quantum electrodynamics phenomena.
