tjyderrien

Our predictions of optimal wavelength for preparing Highly-Regular Laser-Induced Periodic Surface Structures (HR-LIPSS) on metals [Sci. Rep. (2017)] have been confirmed experimentally for the case of Cu at 515 nm. The proof is visible in Fig. 4 in Nanomaterials (MDPI).

The concept and the laser process have been subjected to EU protection, a patent that was granted recently to the Institute of Physics (HiLASE Centre), available at this address.

Our paper in Scientific Reports became the first “Highly Cited” paper of HiLASE Centre. Nice achievement!

On July 31st 2020, we have requested several millions of core-hours computational time at the IT4I.cz computational infrastructure:

• to support the group of prof. Bulgakova at the HiLASE Centre, with simulation based on the time-dependent density functional theory (TDDFT);
• to support the Horizon 2020 Marie Curie project RISE named “ATLANTIC“.

The computational project is meant to provide computational support and the development of the activities based on first-principles modeling at the HiLASE Centre and at the Institute of Physics.

Update: On September 2020, the first phase of the project has been provided with 2.3 millions core-hours. Due to very high demand, all projects have been subjected to computational time reduction.

As a drummer, music producer and laser scientist, I can only be delighted to see that our paper in Scientific Reports has recently been cited in a publication of the Audio Engineering Society. to write vinyl disks using laser light.

Unfortunately, the paper is quite unreachable (I even emailed the authors – no answer). I would have access to it, I would be glad to discuss it with you!

Our activities are touched by the situation with COVID. Of course, we continue to honor simulation requests the best we can meanwhile.

However, all workshops, seminars and conferences have been canceled since March, and still at the time of writing these lines. Therefore, no conference will be attended before Oct. 2020, at minimum.

List of seminars affected by the reduction of gathering activities.

• Postponed to 2021 – High Power Laser Ablation conference, Santa Fe (USA).
• Canceled – Visit at University of California, Merced (USA).
• Postponed – 1 month stay at University of Mendoza (Argentina) for Atlantic project.
• Postponed – Invited talk at the Advanced Lasers Technologies conference, Bordeaux (France).
• Remote – 2 invited talks in Ultrafast Light 2020, Moscow (Russia).

We hope that the crisis will be resolved soon, enabling a smooth return to scientific exchanges.

Following our publication on highly-regular periodic surface structures in metals, a fruitful collaboration driven by Dr. Petr Kovaricek (UCT Prague), Dr. Inam Mirza (HiLASE FZU Prague) and prof. N. M. Bulgakova (HiLASE FZU Prague) was born and was recently published in Nano Research (Springer), IF 8.5.

I’m happy to have contributed to the numerical simulation part using a phenomenological model we have developed in the frame of MSCA “QuantumLaP” project.

Manuscript can be found behind paywall here.

Active discussion at the NVIDIA IT4I event (Ostrava)

In the context of the Marie Curie ATLANTIC project, I could benefit from 2 days training in CUDA and OpenACC. This knowledge is today essential for harvesting the power of high power computers nowadays. Pictures of the event are available here.

Group picture with other attendees of the school.

I have accepted to seat as an associate editor of Optics Express (Optical Society of America). I’m happy to start having editorial activities.

Tweet from the Optical Society of America is available here.

It seems the news may be also available in Optics and Photonics News of January 2020.

• Participants of the Marie Curie project “ATLANTIC” (work packages 3 and 5) stayed one month at HiLASE in September. Assoc. prof. Usman Sapaev and Dr. Sergey Starinskiy both performed an invited HiLASE seminar and presented invited oral presentation at the conference ALT19 (Advanced Laser Technologies).
• The computational time offered by PRACE (HPC project DECI15th “BOLERO”) is now accessible. Certifications by FZU are sufficient to access the resources.
• T. Derrien presented an invited talk at the ALT19 conference on the long standing works on transient excitation of electrons in solids.

The BOLERO PRACE project for high power computation (HPC) has been accepted. Therefore, we got 2.6 million core-hours on top of our resources for 2019-2020.

This will support the heavy computations we run using time-dependent density functional theory at HiLASE RP4 for making predictions in the field of laser processing, and for the ATLANTIC project.