Zobrazeno 1 - 10
of 39
pro vyhledávání: '"Anna Vaskuri"'
Publikováno v:
AIP Advances, Vol 13, Iss 8, Pp 085119-085119-4 (2023)
Photons absorbed in silicon produce electron–hole pairs, which can cause impact ionization and quantum yield larger than one. Reliable determination of quantum yield at low charge-carrier energies (
Externí odkaz:
https://doaj.org/article/6d0d92993119447088bcb1fcbd9f7ad4
Publikováno v:
IEEE Transactions on Applied Superconductivity. 33:1-6
Autor:
Anna Vaskuri, Benoit Curé, Alexey Dudarev, Matthias Mentink, Stephan Pfeiffer, Benoit Teissandier
Publikováno v:
IEEE Transactions on Applied Superconductivity. 33:1-4
Autor:
Matthew Spidell, Anna Vaskuri
Publikováno v:
Journal of Research of the National Institute of Standards and Technology. 126
To calibrate laser power and energy meters, the National Institute of Standards and Technology (NIST) uses several detector-based realizations of the scale for optical radiant flux; these realizations are appropriate for specific laser power/energy r
Publikováno v:
Askola, J, Calkin, Y, Vaskuri, A, Poikonen, T & Ikonen, E 2019, ' Accelerated ageing of organic LED panels using ultraviolet exposure ', Lighting Research and Technology, vol. 51, no. 8, pp. 1263-1274 . https://doi.org/10.1177/1477153518819654
Two different types of commercial organic LED panels were aged with ultraviolet light. One type was aged in an over-filled and open circuit condition with broadband ultraviolet radiation, and the other in an under-filled and closed circuit condition
Autor:
Andrew J. Walowitz, David Harber, Matthew Spidell, Michelle Stephens, Cameron J. E. Straatsma, Nathan A. Tomlin, C. S. Yung, John H. Lehman, Anna Vaskuri
Publikováno v:
Conference on Lasers and Electro-Optics.
We introduce a planar absolute radiometer for room temperature (PARRoT) that will replace NIST’s 50-year-old detector standard for free-space CW laser power measurements and lower the measurement uncertainty (k = 2) from 0.86% to 0.12%.
This paper presents the spectral responsivity calibrations of two indium gallium arsenide (InGaAs) and one germanium based near-infrared photovoltaic detectors using a wavelength tunable laser source based on a supercontinuum laser developed at the M
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::22d556ec8ec00181e3f090d0d26f37cd
https://aaltodoc.aalto.fi/handle/123456789/43366
https://aaltodoc.aalto.fi/handle/123456789/43366
Autor:
Anna Vaskuri, Andrew J. Walowitz, C. S. Yung, David Harber, Cameron J. E. Straatsma, John H. Lehman, Nathan A. Tomlin, Michelle Stephens
Publikováno v:
Synthesis and Photonics of Nanoscale Materials XVII.
We have designed a microfabricated planar absolute radiometer based on a vertically aligned carbon nanotube (VACNT) absorber and an electrical power substitution method. The radiometer is designed to operate at room temperature and to be capable of m
Publikováno v:
The Review of scientific instruments. 91(1)
We introduce a cryostat setup for measuring fundamental optical and electrical properties of light-emitting diodes (LEDs). With the setup, the cryostat pressure and the LED properties of the forward voltage, junction temperature, and electroluminesce
Autor:
C. S. Yung, Andrew J. Walowitz, Cameron J. E. Straatsma, Nathan A. Tomlin, David Harber, Michelle Stephens, Matthew Spidell, Anna Vaskuri, John H. Lehman
Publikováno v:
Optics Express. 29:22533
We have developed a planar absolute radiometer for room temperature (PARRoT) that will replace the legacy C-series calorimeter as the free-space continuous-wave laser power detector standard at the National Institute of Standards and Technology (NIST