Zobrazeno 1 - 10
of 32
pro vyhledávání: '"Dominik Walter Vogt"'
Ultra-high precision comb-locked terahertz frequency-domain spectroscopy of whispering-gallery modes
Publikováno v:
APL Photonics, Vol 9, Iss 7, Pp 076109-076109-6 (2024)
We demonstrate the capabilities of a novel frequency-domain terahertz spectrometer based on a comb-locked frequency synthesizer, which provides absolute frequency calibration. The inherent stability and repeatability of the scans allow for the combin
Externí odkaz:
https://doaj.org/article/b8b373263a1c41f8ac9761939a05ea7e
Publikováno v:
Sensors, Vol 20, Iss 10, p 3005 (2020)
The terahertz spectrum provides tremendous opportunities for broadband gas-phase spectroscopy, as numerous molecules exhibit strong fundamental resonances in the THz frequency range. However, cutting-edge THz gas-phase spectrometer require cumbersome
Externí odkaz:
https://doaj.org/article/733cdb7e8eac4b74a7845be933518562
Autor:
Dominik Walter Vogt, Rainer Leonhardt
Publikováno v:
APL Photonics, Vol 3, Iss 5, Pp 051702-051702-9 (2018)
We report on the first experimental demonstration of terahertz (THz) whispering-gallery modes (WGMs) with an ultra-high quality factor of 1.5 × 104 at 0.62 THz. The WGMs are observed in a high resistivity float zone silicon spherical resonator coupl
Externí odkaz:
https://doaj.org/article/178960179fcd43659ee012e4eaf7279b
Publikováno v:
IEEE Transactions on Terahertz Science and Technology. 12:70-74
Highly sensitive terahertz (THz) sensors for a myriad of applications are rapidly evolving. A widespread sensor concept is based on the detection of minute resonance frequency shifts due to a targeted specimen in the sensors environment. Therefore, c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::66f3121eeaf22ec74be18e7a47158ab1
https://doi.org/10.1109/tthz.2021.3119964
https://doi.org/10.1109/tthz.2021.3119964
Publikováno v:
2022 47th International Conference on Infrared, Millimeter and Terahertz Waves (IRMMW-THz).
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1e2ac1f553795ff9fa6056fdedf70ca8
https://doi.org/10.1109/irmmw-thz50927.2022.9895596
https://doi.org/10.1109/irmmw-thz50927.2022.9895596
Publikováno v:
2021 46th International Conference on Infrared, Millimeter and Terahertz Waves (IRMMW-THz).
We demonstrate a terahertz (THz) frequency reference for precision metrology, by utilising the inherently well- defined resonance frequencies of ultra-high quality (Q) THz microresonators. In a proof-of-concept experiment, we demonstrate the accurate
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b7792c845072eafac70fced6455539a8
https://doi.org/10.1109/irmmw-thz50926.2021.9567013
https://doi.org/10.1109/irmmw-thz50926.2021.9567013
Publikováno v:
Journal of Infrared, Millimeter, and Terahertz Waves. 40:524-534
Coherent continuous wave (CW) terahertz spectroscopy is an extremely valuable technique that allows for the interrogation of systems that exhibit narrow resonances in the terahertz (THz) frequency range, such as high-quality (high-Q) THz whispering-g
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::59dbda7b640943a7bb04fc5998e621c6
https://doi.org/10.1007/s10762-019-00583-3
https://doi.org/10.1007/s10762-019-00583-3
Autor:
Dominik Walter Vogt
Publikováno v:
Optical Materials Express. 12:3463
Terahertz (THz) technology is rapidly evolving, and the advancement of data and information processing devices is essential. Silicon THz microresonators provide perfect platforms to develop compact and integrated devices that could transform THz tech
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::35acf813ec4bc9903add52a7dabe3533
https://doi.org/10.1364/ome.461273
https://doi.org/10.1364/ome.461273
Publikováno v:
2020 45th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz).
We report on the first demonstration of a THz gas spectrometer using a sub-wavelength thick ultrahigh-Q THz disc microresonator. Leveraging the microresonator's ultrahigh quality factor in excess of 120,000 and the intrinsically large evanescent fiel
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0d0bc8788c6f6c75245592e7740524c6
https://doi.org/10.1109/irmmw-thz46771.2020.9370772
https://doi.org/10.1109/irmmw-thz46771.2020.9370772
Publikováno v:
2020 45th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz).
We report on a Terahertz (THz) silicon disc microresonator with a quality factor (Q-factor) in excess of 120,000 at 0.6 THz. The ultra-high Q-factor is enabled by thinning the disc to a fraction of the free-space wavelength, thus minimising the impac
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::47872de159749fd890eab66ec59a1c0d
https://doi.org/10.1109/irmmw-thz46771.2020.9370391
https://doi.org/10.1109/irmmw-thz46771.2020.9370391