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X-WR-CALNAME:Department of Theoretical Physics
X-ORIGINAL-URL:https://web-f1.ijs.si
X-WR-CALDESC:Events for Department of Theoretical Physics
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DTSTART:20240331T010000
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DTSTART;TZID=Europe/Ljubljana:20241017T141500
DTEND;TZID=Europe/Ljubljana:20241017T151500
DTSTAMP:20260423T173124
CREATED:20241006T191857Z
LAST-MODIFIED:20241017T125158Z
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SUMMARY:Zala Korenjak\, "Smectic and soap bubble optofluidic lasers"
DESCRIPTION:We have demonstrated for the first time that soap bubbles can be used as lasers. Soap bubbles are simple\, yet very unique and marvelous objects. They are very interesting to the wide audience\, from children of all ages\, to researchers of a number of disciplines including mathematics\, physics\, chemistry and biology. To realize the soap bubble lasers\, we doped the bubbles with a fluorescent dye and pumped them with an external laser. The generated light circulated in the wall of the bubble\, which consequently worked as a laser cavity. Instead of soap\, we also made bubbles from surfactant-like molecules without any water present. Specifically\, smectic liquid crystals\, which molecules form well defined molecular layers\, were used for this purpose. Such bubbles had a completely uniform thickness with an integer number of molecular layers and most importantly they were extremely stable. The bubbles were attached to a tube or free floating in a container filled with carbon dioxide. The resulting whispering gallery mode lasing was observed in the spectrum of the emitted light as hundreds of regularly spaced sharp peaks. Shifts in the lasing wavelengths enabled the measurement of subtle size changes as small as 10 nm in a millimeter-sized bubble. This incredible precision allowed the bubbles to be used as one of the best pressure and electric field sensors developed till now. This unique physical system may in future allow the study of novel optical and mechanical phenomena in thin films.Video: https://youtu.be/oMXFM70Bmh4 \nhttps://indico.ijs.si/event/2342/
URL:https://web-f1.ijs.si/event/zala-korenjak-tba/
LOCATION:Seminar room of physics (106) (IJS)
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BEGIN:VEVENT
DTSTART;TZID=Europe/Ljubljana:20241017T153000
DTEND;TZID=Europe/Ljubljana:20241017T163000
DTSTAMP:20260423T173124
CREATED:20240819T130528Z
LAST-MODIFIED:20241017T142516Z
UID:35404-1729179000-1729182600@web-f1.ijs.si
SUMMARY:Maxim Mai: Lattice studies of resonances that decay to three-hadrons
DESCRIPTION:I will present the lattice results and underlying formalism on resonances omega and a1 that both strongly decay to three-hadron state pi-pi-pi. These are the first and only two resonances extracted from a three-hadron decay on lattice so far.   \nhttps://indico.ijs.si/event/2246/
URL:https://web-f1.ijs.si/event/maxi-mai-tba/
LOCATION:https://zoom.us/j/3601731049?pwd=bVNQRjUxU2ExZ0cveWcxYXNUUGdjZz09 (A/1-106 – Seminarska soba fizike (F5))
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