Mariusz Klimczak
@mklimczak.bsky.social
An academic, teaching physics to freshmen students at a major university, also research: special optical fibers, nonlinear optics, diamonds and very, very small magnetic fields. University of Warsaw, Poland
#academia
#physics
#optics
#photonics
#academia
#physics
#optics
#photonics
Working on my tenure application. Reviewing past results I came across a sweet gem, when a Western, advanced laser company took note of the results which I obtained in lab together with my first PhD student (now a doctor) Anupamaa Rampur. Ehh, sweet times.
www.menlosystems.com/news/extreme...
www.menlosystems.com/news/extreme...
Menlo Systems Laser Drives Low-Noise Thulium Amplifier
Researchers in Warsaw and Bern used Menlo Systems’ C-Fiber 780 laser to seed a thulium amplifier, generating stable 96-fs pulses at 1900 nm.
www.menlosystems.com
November 2, 2025 at 5:48 PM
Working on my tenure application. Reviewing past results I came across a sweet gem, when a Western, advanced laser company took note of the results which I obtained in lab together with my first PhD student (now a doctor) Anupamaa Rampur. Ehh, sweet times.
www.menlosystems.com/news/extreme...
www.menlosystems.com/news/extreme...
I’ve been reading a popular science monthly magazine DELTA. It has been run since 1974 by University of Warsaw. Delta traditionally covers maths, physics and astronomy. It is in Polish, but OA and getting it translated shouldn’t be a problem;-)
www.deltami.edu.pl
#physics #maths #popularscience
www.deltami.edu.pl
#physics #maths #popularscience
Delta - Strona główna
www.deltami.edu.pl
October 11, 2025 at 3:45 PM
I’ve been reading a popular science monthly magazine DELTA. It has been run since 1974 by University of Warsaw. Delta traditionally covers maths, physics and astronomy. It is in Polish, but OA and getting it translated shouldn’t be a problem;-)
www.deltami.edu.pl
#physics #maths #popularscience
www.deltami.edu.pl
#physics #maths #popularscience
Looks preliminary to say the least, I know, but to me it's beautiful. After trying hard for some time, we learned to take proper polarization resolved measurements of nonlinear optical response of our epitaxial BN films 8-)
#nonlinearoptics #photonics #optics
#nonlinearoptics #photonics #optics
October 7, 2025 at 1:17 PM
Looks preliminary to say the least, I know, but to me it's beautiful. After trying hard for some time, we learned to take proper polarization resolved measurements of nonlinear optical response of our epitaxial BN films 8-)
#nonlinearoptics #photonics #optics
#nonlinearoptics #photonics #optics
Our paper on diamond–silica interfaces under localized laser vitrification got published.
We show how heat-driven diamond decomposition and altering of the silica. Context: distributed optical magnetometry, Kerr nonlinearity shaping.
OA: doi.org/10.1016/j.ce...
#Diamond #Fibers #Optics #Physics
We show how heat-driven diamond decomposition and altering of the silica. Context: distributed optical magnetometry, Kerr nonlinearity shaping.
OA: doi.org/10.1016/j.ce...
#Diamond #Fibers #Optics #Physics
September 20, 2025 at 9:03 AM
Our paper on diamond–silica interfaces under localized laser vitrification got published.
We show how heat-driven diamond decomposition and altering of the silica. Context: distributed optical magnetometry, Kerr nonlinearity shaping.
OA: doi.org/10.1016/j.ce...
#Diamond #Fibers #Optics #Physics
We show how heat-driven diamond decomposition and altering of the silica. Context: distributed optical magnetometry, Kerr nonlinearity shaping.
OA: doi.org/10.1016/j.ce...
#Diamond #Fibers #Optics #Physics
Reposted by Mariusz Klimczak
Last night the Polish airspace was violated by a huge number of Russian drones. Those drones that posed a direct threat were shot down. I am in constant communication with the Secretary General of NATO and our allies.
September 10, 2025 at 6:55 AM
Last night the Polish airspace was violated by a huge number of Russian drones. Those drones that posed a direct threat were shot down. I am in constant communication with the Secretary General of NATO and our allies.
Reposted by Mariusz Klimczak
The Russian attack on Kyiv’s government buildings shows again that the continued delaying a strong reaction against Putin and the attempts to appease him makes no sense. The US and Europe must together force Russia to accept an immediate ceasefire. We have all the instruments.
September 7, 2025 at 10:31 AM
The Russian attack on Kyiv’s government buildings shows again that the continued delaying a strong reaction against Putin and the attempts to appease him makes no sense. The US and Europe must together force Russia to accept an immediate ceasefire. We have all the instruments.
Hoping that a new paper would be a good come-back:
opg.optica.org/oe/fulltext....
It’s about nano-diamonds and detecting small magnetic fields with light. The diamonds are inside an optical fiber. You could imagine placing it at a harbor entrance to detect hostile submerged drones.
#physics #optics
opg.optica.org/oe/fulltext....
It’s about nano-diamonds and detecting small magnetic fields with light. The diamonds are inside an optical fiber. You could imagine placing it at a harbor entrance to detect hostile submerged drones.
#physics #optics
September 5, 2025 at 4:08 PM
Hoping that a new paper would be a good come-back:
opg.optica.org/oe/fulltext....
It’s about nano-diamonds and detecting small magnetic fields with light. The diamonds are inside an optical fiber. You could imagine placing it at a harbor entrance to detect hostile submerged drones.
#physics #optics
opg.optica.org/oe/fulltext....
It’s about nano-diamonds and detecting small magnetic fields with light. The diamonds are inside an optical fiber. You could imagine placing it at a harbor entrance to detect hostile submerged drones.
#physics #optics
Reposted by Mariusz Klimczak
🔬"Science is not a business plan. All ambitious research involves risk," says Dr. Krzysztof Szade, a biochemist from
@jagiellonskiuni.bsky.social. In conversation with
@annakorzekwa.bsky.social, he discusses scientific challenges and #NCN & @erc.europa.eu projects. ncn.gov.pl/en/aktualnos...
@jagiellonskiuni.bsky.social. In conversation with
@annakorzekwa.bsky.social, he discusses scientific challenges and #NCN & @erc.europa.eu projects. ncn.gov.pl/en/aktualnos...
March 13, 2025 at 8:55 AM
🔬"Science is not a business plan. All ambitious research involves risk," says Dr. Krzysztof Szade, a biochemist from
@jagiellonskiuni.bsky.social. In conversation with
@annakorzekwa.bsky.social, he discusses scientific challenges and #NCN & @erc.europa.eu projects. ncn.gov.pl/en/aktualnos...
@jagiellonskiuni.bsky.social. In conversation with
@annakorzekwa.bsky.social, he discusses scientific challenges and #NCN & @erc.europa.eu projects. ncn.gov.pl/en/aktualnos...
As CLEO Europe have emailed their abstract notifications to contributors, it looks like I would be getting an opportunity to see/meet some of you in person this June ;-)
March 29, 2025 at 12:14 PM
As CLEO Europe have emailed their abstract notifications to contributors, it looks like I would be getting an opportunity to see/meet some of you in person this June ;-)
To all the latex pros out there: what would be your recommended alternative to overleaf? „None” would also be a feedback, I could pull some overheads for the subscription, as long as my project lasts.
January 29, 2025 at 11:19 AM
To all the latex pros out there: what would be your recommended alternative to overleaf? „None” would also be a feedback, I could pull some overheads for the subscription, as long as my project lasts.
Reposted by Mariusz Klimczak
Please share: Our Max Planck Institute recently left X and is present here on Mastodon. Give them a follow! Beautiful pictures from the science of light!
#mastodon #physics #science #light #quantum #optics #photonics #pictures
@maxplanckgesellschaft
From: @MPI_ScienceOfLight […]
#mastodon #physics #science #light #quantum #optics #photonics #pictures
@maxplanckgesellschaft
From: @MPI_ScienceOfLight […]
Original post on fediscience.org
fediscience.org
January 29, 2025 at 9:35 AM
Believe it or not, my CLEO Europe submission done last week was the first meaningful doc I prepared entirely in latex (overleaf). It is better late than never, but in my case it is also a sign of being a PI in a true sense, ie „nobody” is going to tell me not to because they are used to ms word.
part.case
January 29, 2025 at 10:43 AM
Believe it or not, my CLEO Europe submission done last week was the first meaningful doc I prepared entirely in latex (overleaf). It is better late than never, but in my case it is also a sign of being a PI in a true sense, ie „nobody” is going to tell me not to because they are used to ms word.
Reposted by Mariusz Klimczak
The words we heard from the main actors of the AfD rally about “Great Germany” and “the need to forget German guilt for Nazi crimes” sounded all too familiar and ominous. Especially only hours before the anniversary of the liberation of Auschwitz.
January 26, 2025 at 1:17 PM
The words we heard from the main actors of the AfD rally about “Great Germany” and “the need to forget German guilt for Nazi crimes” sounded all too familiar and ominous. Especially only hours before the anniversary of the liberation of Auschwitz.
Single-slit experiment at home for my fifth-grader. I know this could be generally improved, but this is what comes out with a rough setting up of two razor blades with a masking tape, a ruler and some lego. Must admit that the camera shows this much better than my actual vision.
January 2, 2025 at 8:48 PM
Single-slit experiment at home for my fifth-grader. I know this could be generally improved, but this is what comes out with a rough setting up of two razor blades with a masking tape, a ruler and some lego. Must admit that the camera shows this much better than my actual vision.
Reposted by Mariusz Klimczak
The events in Syria have made the world realise once again, or at least they should, that even the most cruel regime may fall and that Russia and its allies can be defeated.
December 8, 2024 at 4:34 PM
The events in Syria have made the world realise once again, or at least they should, that even the most cruel regime may fall and that Russia and its allies can be defeated.
A function taking y=1 for rational x and y=-1 for irrational x is discontinuous for every x. If you tried to plot it, it would look like two line-thin clouds of points at y equals either 1 or -1. I cannot shake this off tonight 🤔
December 7, 2024 at 9:20 PM
A function taking y=1 for rational x and y=-1 for irrational x is discontinuous for every x. If you tried to plot it, it would look like two line-thin clouds of points at y equals either 1 or -1. I cannot shake this off tonight 🤔
Coming back to WAW from WRO after a successful phd viva where I was one of the revs. 4h train ride and me happy that I will age less than by 4h owing to general relativity 🤓
November 22, 2024 at 4:22 PM
Coming back to WAW from WRO after a successful phd viva where I was one of the revs. 4h train ride and me happy that I will age less than by 4h owing to general relativity 🤓
Prime Minister of Poland just joined bluesky. I love this, but that also means fedi - bsky 0:1 for a Pole like myself :-(
November 17, 2024 at 9:50 AM
Prime Minister of Poland just joined bluesky. I love this, but that also means fedi - bsky 0:1 for a Pole like myself :-(
11.11 We are independent, we are Poles!
November 11, 2024 at 12:03 PM
11.11 We are independent, we are Poles!
Looks like academia finally started organizing themselves on this platform. I’m looking forward to that, bummer this did not work out with masto.
November 10, 2024 at 4:01 PM
Looks like academia finally started organizing themselves on this platform. I’m looking forward to that, bummer this did not work out with masto.
Reposted by Mariusz Klimczak
John Hopfield and Geoffrey Hinton share the 2024 Nobel Prize for Physics for their work on machine learning. physicsworld.com/a/john-hopfi...
John Hopfield and Geoffrey Hinton share the 2024 Nobel Prize for Physics – Physics World
Duo win for their work on machine learning.
physicsworld.com
October 8, 2024 at 10:10 AM
John Hopfield and Geoffrey Hinton share the 2024 Nobel Prize for Physics for their work on machine learning. physicsworld.com/a/john-hopfi...