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2020

Performance of EGNSS-Based Timing in Various Threat Conditions

Honkala, S., Thombre, S., Kirkko-Jaakkola, M., Zelle, H., Veerman, H., Wallin, A. E., DIerikx, E. F., Kaasalainen, S., Soderholm, S. & Kuusniemi, H., May 2020, In : IEEE Transactions on Instrumentation and Measurement. 69, 5, p. 2287-2299 13 p., 8815859.

Research output: Contribution to journalArticleScientificpeer-review

Realisation of a quantum current standard at liquid helium temperature with sub-ppm reproducibility

Giblin, S. P., Mykkänen, E., Kemppinen, A., Immonen, P., Manninen, A., Jenei, M., Möttönen, M., Yamahata, G., Fujiwara, A. & Kataoka, M., 19 Mar 2020, In : Metrologia. 57, 2, 9 p., 025013.

Research output: Contribution to journalArticleScientificpeer-review

2 Citations (Scopus)

Thermionic junction devices utilizing phonon blocking

Mykkänen, E., Lehtinen, J. S., Grönberg, L., Shchepetov, A., Timofeev, A. V., Gunnarsson, D., Kemppinen, A., Manninen, A. J. & Prunnila, M., 2020, In : Science advances. 6, 15, eaax9191.

Research output: Contribution to journalArticleScientificpeer-review

Open Access
1 Citation (Scopus)

Transconductance amplifier for optical metrology applications of light-emitting diodes

Dönsberg, T., Poikonen, T. & Ikonen, E., Jun 2020, In : IEEE Transactions on Instrumentation and Measurement. 69, 6, p. 3704-3710 7 p.

Research output: Contribution to journalArticleScientificpeer-review

Open Access
1 Citation (Scopus)
2019

Accelerated ageing of organic LED panels using ultraviolet exposure

Askola, J., Calkin, Y., Vaskuri, A., Poikonen, T. & Ikonen, E., 1 Dec 2019, In : Lighting Research and Technology. 51, 8, p. 1263-1274 12 p.

Research output: Contribution to journalArticleScientificpeer-review

Application of Charge-Sensitive Preamplifier for the Calibration of Partial Discharge Calibrators Below 1 pC

Havunen, J. & Hällström, J., Jun 2019, In : IEEE Transactions on Instrumentation and Measurement. 68, 6, p. 2034-2040 7 p., 8640062.

Research output: Contribution to journalArticleScientificpeer-review

Open Access
3 Citations (Scopus)

Broadband lasers for photo-ionization and repumping of trapped ions

Fordell, T. & Lindvall, T., 2019, In : Journal of the Optical Society of America B: Optical Physics. 36, 2, p. 415-420

Research output: Contribution to journalArticleScientificpeer-review

Harmonic Power Standard of VTT MIKES

Lehtonen, T. A., 1 Jun 2019, In : IEEE Transactions on Instrumentation and Measurement. 68, 6, p. 2047-2052 6 p., 8556073.

Research output: Contribution to journalArticleScientificpeer-review

1 Citation (Scopus)

Traceable measurement of transmitted overvoltages in instrument transformers

Elg, A-P., Garnacho, F., Garcia, T., Rovira, J., Hällström, J. & Nieminen, T., Dec 2019, In : CIGRE Science and Engineering. 16, p. 58-63 6 p.

Research output: Contribution to journalArticleScientificpeer-review

Open Access
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Validation of the fisheye camera method for spatial non-uniformity corrections in luminous flux measurements with integrating spheres

Kokka, A., Pulli, T., Ferrero, A., Dekker, P., Thorseth, A., Kliment, P., Klej, A., Gerloff, T., Ludwig, K., Poikonen, T. & Ikonen, E., 18 Jun 2019, In : Metrologia. 56, 4, 045002.

Research output: Contribution to journalArticleScientificpeer-review

Open Access
2018

Development of white LED illuminants for colorimetry and recommendation of white LED reference spectrum for photometry

Kokka, A., Poikonen, T., Blattner, P., Jost, S., Ferrero, A., Pulli, T., Ngo, M., Thorseth, A., Gerloff, T., Dekker, P., Stuker, F., Klej, A., Ludwig, K., Schneider, M., Reiners, T. & Ikonen, E., 28 Jun 2018, In : Metrologia. 55, 4, p. 526-534 9 p.

Research output: Contribution to journalArticleScientificpeer-review

Open Access
2 Citations (Scopus)

Multiple transfer standard for calibration and characterization of test setups for LED lamps and luminaires in industry

Sperling, A., Meyer, M., Pendsa, S., Jordan, W., Poikonen, T., Renoux, D. & Blattner, P., 2 Feb 2018, In : Metrologia. 55, 2, p. S37-S42

Research output: Contribution to journalArticleScientificpeer-review

Relationships between junction temperature, electroluminescence spectrum and ageing of light-emitting diodes

Vaskuri, A., Kärhä, P., Baumgartner, H., Kantamaa, O., Pulli, T., Poikonen, T. & Ikonen, E., 15 Mar 2018, In : Metrologia. 55, 2, p. S86-S95

Research output: Contribution to journalArticleScientificpeer-review

Open Access
18 Citations (Scopus)

Superconducting MoSi nanowires

Lehtinen, J. S., Kemppinen, A., Mykkänen, E., Prunnila, M. & Manninen, A. J., 1 Jan 2018, In : Superconductor Science and Technology. 31, 1, 015002.

Research output: Contribution to journalArticleScientificpeer-review

5 Citations (Scopus)
2017

Bilateral international inductance comparison using traveling standards in thermoregulated enclosures

Funck, T., Bothe, H., Kölling, A., Satrapinski, A. & Suomalainen, E. P., 1 Jun 2017, In : IEEE Transactions on Instrumentation and Measurement. 66, 6, p. 1511-1515 5 p., 7801843.

Research output: Contribution to journalArticleScientificpeer-review

1 Citation (Scopus)

Characterizing superconducting filters using residual microwave background

Lehtinen, J. S., Mykkänen, E., Kemppinen, A., Lotkhov, S., Golubev, D. & Manninen, A., 2017, In : Superconductor Science and Technology. 30, 5, 10 p., 055006.

Research output: Contribution to journalArticleScientificpeer-review

4 Citations (Scopus)

Controlling single microwave photons: A new frontier in microwave engineering

Lindström, T., Lake, R., Pashkin, Y. A. & Manninen, A., 2017, In : Microwave journal. 60, 5, p. 118-130

Research output: Contribution to journalArticleScientificpeer-review

Fisheye camera method for spatial non-uniformity corrections in luminous flux measurements with integrating spheres

Kokka, A., Pulli, T., Poikonen, T., Askola, J. & Ikonen, E., 24 Jul 2017, In : Metrologia. 54, 4, p. 577-583 7 p.

Research output: Contribution to journalArticleScientificpeer-review

Open Access
2 Citations (Scopus)

Optimizing Temperature Coefficient and Frequency Response of Rogowski Coils

Lehtonen, T. A. & Hällstrom, J., 15 Oct 2017, In : IEEE Sensors Journal. 17, 20, p. 6646-6652 7 p., 8022679.

Research output: Contribution to journalArticleScientificpeer-review

Open Access
6 Citations (Scopus)

Spectroscopic thermometry for long-distance surveying

Tomberg, T., Fordell, T., Jokela, J., Merimaa, M. & Hieta, T., 10 Jan 2017, In : Applied Optics. 56, 2, p. 239-246 8 p.

Research output: Contribution to journalArticleScientificpeer-review

2 Citations (Scopus)

Spin Resonance Clock Transition of the Endohedral Fullerene N 15 @ C60

Harding, R. T., Zhou, S., Zhou, J., Lindvall, T., Myers, W. K., Ardavan, A., Briggs, G. A. D., Porfyrakis, K. & Laird, E. A., 4 Oct 2017, In : Physical Review Letters. 119, 14, 140801.

Research output: Contribution to journalArticleScientificpeer-review

Open Access
3 Citations (Scopus)

Traceable Coulomb blockade thermometry

Hahtela, O., Mykkänen, E., Kemppinen, A., Meschke, M., Prunnila, M., Gunnarsson, D., Roschier, L., Penttilä, J. & Pekola, J., 1 Feb 2017, In : Metrologia. 54, 1, p. 69-76 8 p.

Research output: Contribution to journalArticleScientificpeer-review

7 Citations (Scopus)
2016

Accurate Coulomb blockade thermometry up to 60 kelvin

Meschke, M., Kemppinen, A. & Pekola, J. P., 2016, In : Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences. 374, 2064, 20150052.

Research output: Contribution to journalArticleScientificpeer-review

9 Citations (Scopus)

Frequency Comparison of 171 +Ion Optical Clocks at PTB and NPL via GPS PPP

Leute, J., Huntemann, N., Lipphardt, B., Tamm, C., Nisbet-Jones, P. B. R., King, S. A., Godun, R. M., Jones, J. M., Margolis, H. S., Whibberley, P. B., Wallin, A., Merimaa, M., Gill, P. & Peik, E., 1 Jul 2016, In : IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control. 63, 7, p. 981-985 5 p., 7398135.

Research output: Contribution to journalArticleScientificpeer-review

16 Citations (Scopus)

Mini array of quantum Hall devices based on epitaxial graphene

Novikov, S., Lebedeva, N., Hämäläinen, J., Iisakka, I., Immonen, P., Manninen, A. & Satrapinski, A., 2016, In : Journal of Applied Physics. 119, 17, 174504.

Research output: Contribution to journalArticleScientificpeer-review

13 Citations (Scopus)

Natural and accelerated ageing of LED lamps

Baumgartner, H., Renoux, D., Kärhä, P., Poikonen, T., Pulli, T. & Ikonen, E., 2016, In : Lighting Research and Technology. 48, 8, p. 930-942

Research output: Contribution to journalArticleScientificpeer-review

7 Citations (Scopus)

New evaluation of T - T2000 from 0.02 K to 1 K by independent thermodynamics methods

Engert, J., Kirste, A., Shibahara, A., Casey, A., Levitin, L., Saunders, J., Hahtela, O., Kemppinen, A., Mykkänen, E., Prunnila, M., Gunnarsson, D., Roschier, L., Meschke, M. & Pekola, J., 2016, In : International Journal of Thermophysics. 37, 125

Research output: Contribution to journalArticleScientificpeer-review

7 Citations (Scopus)

Reducing current noise in cryogenic experiments by vacuum-insulated cables

Mykkänen, E., Lehtinen, J., Kemppinen, A., Krause, C., Drung, D., Nissilä, J. & Manninen, A., 2016, In : Review of Scientific Instruments. 87, 10, 10511.

Research output: Contribution to journalArticleScientificpeer-review

6 Citations (Scopus)

White rabbit precision time protocol on long-distance fiber links

Dierikx, E. F., Wallin, A. E., Fordell, T., Myyry, J., Koponen, P., Merimaa, M., Pinkert, T. J., Koelemeij, J. C. J., Peek, H. Z. & Smets, R., 1 Jul 2016, In : IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control. 63, 7, p. 945-952 8 p., 7383303.

Research output: Contribution to journalArticleScientificpeer-review

47 Citations (Scopus)
2015

Analysis of thermal radiation in ion traps for optical frequency standards

Doležal, M., Balling, P., Nisbet-Jones, P. B. R., King, S. A., Jones, J. M., Klein, H. A., Gill, P., Lindvall, T., Wallin, A. E., Merimaa, M., Tamm, C., Sanner, C., Huntemann, N., Scharnhorst, N., Leroux, I. D., Schmidt, P. O., Burgermeister, T., Mehlstäubler, T. E. & Peik, E., 12 Nov 2015, In : Metrologia. 52, 6, p. 842-856 842.

Research output: Contribution to journalArticleScientificpeer-review

25 Citations (Scopus)

Broadband, unpolarized repumping and clearout light sources for Sr+ single-ion clocks

Fordell, T., Lindvall, T., Dubé, P., Madej, A. A., Wallin, A. E. & Merimaa, M., 1 Jan 2015, In : Optics Letters. 40, 8, p. 1822-1825

Research output: Contribution to journalArticleScientificpeer-review

11 Citations (Scopus)

MEMS-based voltage detector

Helistö, P., Sipola, H., Seppä, H. & Manninen, A. J., 2015, In : Sensors and Actuators A: Physical. 234, p. 99-103

Research output: Contribution to journalArticleScientificpeer-review

2 Citations (Scopus)

Performance of a modular wideband HVDC reference divider for voltages up to 1000 kV

Hällström, J., Bergman, A., Dedeoglu, S., Elg, A-P., Houtzager, E., Klüss, J., Lehtonen, T., Lucas, W., Meisner, J., Merev, A., Nieminen, T., Schmidt, M., Suomalainen, E-P. & Weber, C., 2015, In : IEEE Transactions on Instrumentation and Measurement. 64, 6, p. 1390-1397

Research output: Contribution to journalArticleScientificpeer-review

7 Citations (Scopus)

Traceability and Characterization of a 1000 kV HVDC Reference Divider

Elg, A-P., Bergman, A., Hällström, J., Kharezy, M. & Nieminen, T., 2015, In : IEEE Transactions on Instrumentation and Measurement. 64, 6, p. 1709-1715

Research output: Contribution to journalArticleScientificpeer-review

7 Citations (Scopus)
2014

An accurate single-electron pump based on a highly tunable silicon quantum dot

Rossi, A., Tanttu, T., Tan, K. Y., Iisakka, I., Zhao, R., Chan, K. W., Tattamazzi, G. C., Rogge, S., Dzurak, A. S. & Möttönen, M., 2014, In : Nano Letters. 14, 6, p. 3405-3411

Research output: Contribution to journalArticleScientificpeer-review

50 Citations (Scopus)

Frequency-comb-referenced mid-infrared source for high-precision spectroscopy

Peltola, J., Vainio, M., Fordell, T., Hieta, T., Merimaa, M. & Halonen, L., 29 Dec 2014, In : Optics Express. 22, 26, p. 32429-32439 11 p.

Research output: Contribution to journalArticleScientificpeer-review

Open Access
19 Citations (Scopus)

Frequency-comb-referenced tunable diode laser spectroscopy and laser stabilization applied to laser cooling

Fordell, T., Wallin, A. E., Lindvall, T., Vainio, M. & Merimaa, M., 2014, In : Applied Optics. 53, 31, p. 7476-7482

Research output: Contribution to journalArticleScientificpeer-review

Performance of a wideband 200-kV HVDC reference divider module

Hällström, J., Bergman, A., Dedeoglu, S., Elg, A-P., Houtzager, E., Lucas, W., Merev, A., Meisner, J., Schmidt, M., Suomalainen, E-P. & Weber, C., 2014, In : IEEE Transactions on Instrumentation and Measurement. 63, 9, p. 2264-2270 6 p.

Research output: Contribution to journalArticleScientificpeer-review

13 Citations (Scopus)
2013

Excitation of single quasiparticles in a small superconducting Al island connected to normal-metal leads by tunnel junctions

Maisi, V. F., Lotkhov, S. V., Kemppinen, A., Heimes, A., Muhonen, J. T. & Pekola, J. P., 2013, In : Physical Review Letters. 111, 14, 147001.

Research output: Contribution to journalArticleScientificpeer-review

30 Citations (Scopus)

Sensitivity optimization of epitaxial graphene-based gas sensors

Novikov, S., Satrapinski, A., Lebedeva, N. & Iisakka, I., 2013, In : IEEE Transactions on Instrumentation and Measurement. 62, 6, p. 1859-1864 5 p.

Research output: Contribution to journalArticleScientificpeer-review

12 Citations (Scopus)

Single-electron current sources: Toward a refined definition of the ampere

Pekola, J. P., Saira, O-P., Maisi, V. F., Kemppinen, A., Möttönen, M., Pashkin, Y. A. & Averin, D. V., 2013, In : Reviews of Modern Physics. 85, 4, 1421.

Research output: Contribution to journalArticleScientificpeer-review

193 Citations (Scopus)

Spectrally adjustable quasi-monochromatic radiance source based on LEDs and its application for measuring spectral responsivity of a luminance meter

Hirvonen, J-M., Poikonen, T., Vaskuri, A., Kärhä, P. & Ikonen, E., 2013, In : Measurement Science and Technology. 24, 11, 8 p., 115201.

Research output: Contribution to journalArticleScientificpeer-review

9 Citations (Scopus)

Unpolarized, incoherent repumping light for prevention of dark states in a trapped and laser-cooled single ion

Lindvall, T., Fordell, T., Tittonen, I. & Merimaa, M., 2013, In : Physical Review A: Atomic, Molecular, and Optical Physics. 87, 1, 013439.

Research output: Contribution to journalArticleScientificpeer-review

8 Citations (Scopus)
2012

Dark-state suppression and optimization of laser cooling and fluorescence in a trapped alkaline-earth-metal single ion

Lindvall, T., Merimaa, M., Tittonen, I. & Madej, A. A., 2012, In : Physical Review A: Atomic, Molecular, and Optical Physics. 86, 3, 033403.

Research output: Contribution to journalArticleScientificpeer-review

12 Citations (Scopus)

Luminous efficacy measurement of solid-state lamps

Poikonen, T., Pulli, T., Vaskuri, A., Baumgartner, H., Kärhä, P. & Ikonen, E., 2012, In : Metrologia. 49, 2, p. 135-140 5 p.

Research output: Contribution to journalArticleScientificpeer-review

10 Citations (Scopus)

Uncertainty analysis of photometer directional response index f2 using Monte Carlo simulation

Poikonen, T., Blattner, P., Kärhä, P. & Ikonen, E., 2012, In : Metrologia. 49, 6, p. 727-736 9 p.

Research output: Contribution to journalArticleScientificpeer-review

4 Citations (Scopus)

Uusi SI-järjestelmä toteuttaa Maxwellin unelman

Manninen, A., 2012, In : Arkhimedes. 2, p. 10-20 11 p.

Research output: Contribution to journalArticleProfessional

2011

Comparison of asynchronous sampling correction algorithms for frequency estimation of signals of poor power quality

Lapuh, R., Clarkson, P., Pogliano, U., Hällström, J. K. & Wright, P. S., 2011, In : IEEE Transactions on Instrumentation and Measurement. 60, 7, p. 2235-2241 7 p.

Research output: Contribution to journalArticleScientificpeer-review

7 Citations (Scopus)

DC voltage reference based on a square-wave-actuated microelectromechanical sensor

Kaasalainen, J. & Manninen, A., 2011, In : IEEE Transactions on Instrumentation and Measurement. 60, 7, p. 2506-2511 6 p.

Research output: Contribution to journalArticleScientificpeer-review

3 Citations (Scopus)

Long hold times in a two-junction electron trap

Kemppinen, A., Lotkhov, S. V., Saira, O-P., Zorin, A. B., Pekola, J. P. & Manninen, A. J., 2011, In : Applied Physics Letters. 99, 14, 3 p., 142106.

Research output: Contribution to journalArticleScientificpeer-review

15 Citations (Scopus)