More than 40 years ago, a new direction in physics opened up with the arrival of plasma-wave electronics. The possibility that the plasma waves could propagate faster than electrons fascinated all. Therefore, it was initially expected that plasmonic devices, including detectors and generators of electromagnetic radiation, would be able to work effectively in the very high frequencies - terahertz (THz) range, inaccessible to standard electronic devices. However, numerous experimental attempts to realize the amplifiers or emitters failed: the intensity of radiation turned out to be too small, plasma resonances too broad, or devices operated only at cryogenic temperatures.
This fascinating subject will be discussed during next Unipress Thursday seminar by the awardee of the ERC Advanced Grant Prof. Wojciech Knapfrom our Institute CENTETRA Laboratories in a talk "Plasmonic Crystals in Graphene and GaN for Terahertz Active Devices”.
The Warsaw Doctoral School in Natural and Biomedical Sciences and the Institute of High Pressure Physics PAS cordially invites you to a SPOTLIGHT TALK
"AlGaN nanostructures for far UV-C emitters"given byProf. Eva Monroy fromQuantum Photonics, Electronics and Engineering Laboratory (PHELIQS) of CEA-Grenoble, France
When and where: Wednesday, April 24, 2024, 13:00 (duration: 60 min + more)at the IHPP PAS al. Prymasa Tysiąclecia 98, seminar room 2nd floorand online - the link to Zoom meeting and abstract are available here.
What is SCAATTM? How can we increase the 4-inch GaN bulk crystal diameter if the Ni-based superalloys material properties cannot withstand higher pressures? Are 8-inch bulk GaN crystals a dream or reality?
These questions will be adressed by Dr. Yuji Kagamitani from Mitsubishi Chemical in a talk on “Acidic Ammonothermal Growth of Bulk GaN” during next Unipress Thursday seminar.
Join us online via Zoom platform on Thursday, April 25, 2024 at 3:00 pm. To get the link to Zoom meeting, please contact us at dyrekcja@unipress.waw.pl
3-D projectors used without polarization goggles are the "Holy Grail" of optoelectronics. In the Institute's Laboratory of Semiconductor Characterization, we have developed two technologies which could pave the way to such projectors. Both are based on AlGaInN epitaxy on GaN substrates after lateral patterning. However, there are a lot of problems to be solved. The question is if they can be solved?
Join us on Wednesday, March 27, 2024 at 3:00 pm for the next online Unipress Thursday seminar. Prof. Mike Leszczyński from our Institute of High Pressure Physics PAS, the Laboratory of Semiconductor Characterization will give a talk entitled "Multicolour laser diode arrays for 3-D projectors - science fiction?".