Bibliographic Details
| Title: |
BRIDGING THE TERAHERTZ GAP USING SOLID-STATE DEVICES. |
| Alternate Title: |
TERAHERCŲ DAŽNIŲ RUOŽO APRĖPTIS NAUDOJANT KIETOJO KŪNO PRIETAISUS. |
| Authors: |
Seliuta, D.1, Minkevičius, L.1,2, Grigelionis, I.1, Lisauskas, A.1,3, Čibiraitė-Lukenskienė, D.1,3, Ikamas, K.1,3, Orlov, S.1, Ivaškevičiūtė-Povilauskienė, R.1, Jorudas, J.1, Janonis, V.1, Kašalynas, I.1,3, Driukas, S.1, Čižas, V.1,2, Alekseev, K. N.1, Valušis, G.2 gintaras.valusis@ff.vu.lt |
| Source: |
Lithuanian Journal of Physics. 2025, Vol. 65 Issue 4, p173-193. 21p. |
| Subjects: |
Solid state electronics, Quantum cascade lasers, Submillimeter wave imaging, Submillimeter waves, Gallium nitride, Spectrometry, Terahertz spectroscopy |
| Abstract (English): |
Terahertz (THz) frequencies nestled between the microwave and infrared ranges in the electromagnetic spectrum radiation remain one of the most attractive research topics. A particular attention is given to the issues related to the development of solid-state-based room-temperature high-power, stable and portable terahertz emitters and detectors as well as user-friendly THz imaging and spectroscopy. At the dawn of this research, four decades ago, academician Juras Požela [J. Požela and V. Jucienė, Physics of High-Speed Transistors (Vilnius, Mokslas, 1985)] considered possible physical mechanisms -- hot electrons, plasma effects, Josephson junctions, masers, etc. -- that can successfully be employed to cover the THz frequencies using solid-state physics approaches. In this work, we briefly overview the recent achievements and advances illustrating an incredibly high precision of the scientific predictions given by Acad. Juras Požela based on his wide erudition, deeply sensitive intuition and great insights, gifted feeling of scientific trends and evolution. The paper presents a structured snapshot of the modern devices with highlights in their physics behind the operation and main parameters and includes contemporary topics in THz science and technology related to electrically pumped GaN-based sources and quantum semiconductor structures such as resonant tunnelling diodes, quantum cascade lasers, and quantum semiconductor superlattices. Possible challenges in further development of the described approaches and devices are illuminated. [ABSTRACT FROM AUTHOR] |
| Abstract (Lithuanian): |
Darbe trumpai apžvelgiami naujausi moksliniai pasiekimai ir pažanga, iliustruojantys neįtikėtiną akad. Juro Poželos dar 1985 m. pateiktų mokslinių prognozių tikslumą, pagrįstą jo plačia erudicija, jautria intuicija ir puikiomis įžvalgomis bei įstabiu mokslo tendencijų ir jų evoliucijos pojūčiu. Straipsnyje pateikiama struktūrizuota šiuolaikinių prietaisų apžvalga, pabrėžiant jų veikimo fiziką ir pagrindinius parametrus, taip pat aptariamos šiuolaikinės terahercų mokslo ir technologijų temos, susijusios su elektriškai kaupinamais GaN šaltiniais bei kvantinių puslaidininkinių elementų, prietaisų ir darinių, tokių kaip rezonansiniai tuneliniai diodai, kvantiniai kaskadiniai lazeriai ir kvantinių puslaidininkinių supergardelės, tyrimai. Aptariami galimi iššūkiai, susiję su aprašytų prietaisų tolesniu vystymu ir plėtra. [ABSTRACT FROM AUTHOR] |
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| Database: |
Engineering Source |
