Optical assessment of the spatial variation in total soil carbon using laser-induced breakdown spectroscopy
V. Dwivedi, J. Ahokas, J. Viljanen, P. Ryczkowski, N. J. Shurpali, H. R. Bhattarai, P. Virkajärvi, J. Toivonen
Publications
2023
2022
Characterizing plastics containing brominated flame retardants with combined LIBS and Raman spectroscopy
T. Sormunen, J. Viljanen, J. Havisto, K. Korpijärvi, I. Rytöluoto, J. P. Kankaanpää, A. Lämsä, S. Kauppi, J. Toivonen, P. Fjäder, S. Järvinen
Detection of gaseous nerve agent simulants with broadband photoacoustic spectroscopy
T. Mikkonen, D. Luoma, H. Hakulinen, G. Genty, P. Vanninen, J. Toivonen
Elemental analysis of single ambient aerosol particles using laser-induced breakdown spectroscopy
P. Heikkilä, A. Rostedt, J. Toivonen, J. Keskinen
Mid-infrared hyperspectral sensor based on MEMS Fabry-Pérot interferometer for stand-off sensing applications
A. Saleh, M. Mekhrengin, T. Dönsberg, T. Kääriäinen, G. Genoud, J. Toivonen
Novel optical technologies for emergency preparedness and response: Mapping contaminations with alpha-emitting radionuclides
M. Luchkov, V. Dangendorf, U. Giesen, F. Langner, C. Olaru, M. Zadehrafi, A. Klose, K. Kalmankoski, J. Sand, S. Ihantola, H. Toivonen, C. Walther, S. Röttger, M. R. Ioan, J. Toivonen, F. S. Krasniqi
Sensitive multi-species photoacoustic gas detection based on mid-infrared supercontinuum source and miniature multipass cell
T. Mikkonen, T. Hieta, G. Genty, J. Toivonen
Supercontinuum intensity noise coupling in Fourier transform photoacoustic spectroscopy
T. Mikkonen, Z. Eslami, G. Genty, J. Toivonen
2021
Light-patterned fluorescent gold nanoclusters in polycarbonate films
M. H. Bitarafan, S. Zhou, J. Hänninen, Y. Duan, M. Leino, R. H. A. Ras, J. Toivonen
Supercontinuum lidar for industrial process analysis
A. Saleh, P. Ryczkowski, G. Genty, J. Toivonen
In-situ monitoring of transient gas phase K-Cl-S chemistry in a pilot-scale combustor
J. Viljanen, T. Allgurén, Y. Wang, X. Li, J. Toivonen, K. Andersson, J.O.L. Wendt
Maskless fabrication of plasmonic metasurfaces in polymer film using a spatial light modulator
M. H. Bitarafan, S. Annurakshita, J. Toivonen, G. Bautista
Standoff UV-C imaging of alpha particle emitters
F. S. Krasniqi, T. Kerst, M. Leino, J. T. Eisheh, H. Toivonen, A. Röttger, J. Toivonen
2020
Broadband laser-based infrared detector for gas chromatography
T. Tomberg, N. Vuorio, T. Hieta, M. Jussila, K. Hartonen, M. Vainio, T. Mikkonen, J. Toivonen, M. Riekkola, L. Halonen, M. Metsälä
Analysis of ilmenite slag using laser-induced breakdown spectroscopy
A. K. Gupta, M. Aula, E. Negre, J. Viljanen, H. Pauna, P. Mäkelä, J. Toivonen, M. Huttula, T. Fabritius
Detection of gaseous species during KCl‐induced high‐temperature corrosion by the means of CPFAAS and CI‐APi‐TOF
J. Lehmusto, M. Olin, J. Viljanen, J. Kalliokoski, F. Mylläri, J. Toivonen, M. Dal Maso, L. Hupa
Sequential collinear photofragmentation and atomic absorption spectroscopy for online laser monitoring of triatomic metal species
J. Viljanen, K. Kalmankoski, V. Contreras, J. K. Sarin, T. Sorvajärvi, H. Kinnunen, S. Enestam, J. Toivonen
Sub-microwatt direct laser writing of fluorescent gold nanoclusters in polymer films
M. H. Bitarafan, S. Suomala, J. Toivonen
Toward elemental analysis of ambient single particles using electrodynamic balance and laser-induced breakdown spectroscopy
P. Heikkilä, J. Rossi, A. Rostedt, J. Huhtala, A. Järvinen, J. Toivonen, J. Keskinen
2019
Single-frequency 100 ns / 0.5 mJ laser pulses from all-fiber double clad ytterbium doped tapered fiber amplifier
K. Patokoski, J. Rissanen, T. Noronen, R. Gumenyuk, Y. Chamorovskii, V. Filippov, J. Toivonen
Dynamic enhancement of nitric oxide radioluminescence with nitrogen purge
T. Kerst, J. Toivonen
Short-range supercontinuum-based lidar for temperature profiling
A. Saleh, A. Aalto, P. Ryczkowski, G. Genty, J. Toivonen
Detection of gaseous species during KCl-induced high-temperature corrosion by the means of CPFAAS and CI-APi-TOF
J. Lehmusto, M. Olin, J. Viljanen, J. Kalliokoski, F. Mylläri, J. Toivonen, M. Dal Maso, L. Hupa
Alpha radiation-induced luminescence by am-241 in aqueous nitric acid solution
T. Kerst, R. Malmbeck, N. lal Banik, J. Toivonen
2018
Intense radioluminescence of NO/N2-mixture in solar blind spectral region
T. Kerst, J. Toivonen
Machine learning analysis of extreme events in optical fibre modulation instability
M. Närhi, L. Salmela, J. Toivonen, C. Billet, J. M. Dudley, G. Genty
Broadband cantilever-enhanced photoacoustic spectroscopy in the mid-IR using a supercontinuum
T. Mikkonen, C. Amiot, A. Aalto, K. Patokoski, G. Genty, J. Toivonen
Optical frequency comb photoacoustic spectroscopy
I. Sadiek, T. Mikkonen, M. Vainio, J. Toivonen, A. Foltynowicz
Real-time release of Na, K and Ca during thermal conversion of biomass using quantitative microwave-assisted laser-induced breakdown spectroscopy
J. Viljanen, H. Zhao, Z-H. Zhang, J. Toivonen, Z. T. Alwahabi
Standoff alpha radiation detection for hot cell imaging and crime scene investigation
T. Kerst, J. Sand, S. Ihantola, K. Peräjärvi, A. Nicholl, E. Hrnecek, H. Toivonen, J. Toivonen
2017
Cavity enhanced absorption spectroscopy in the mid-infrared using a supercontinuum source
C. Amiot, A. Aalto, P. Ryczkowski, J. Toivonen, G. Genty
Enhanced self-mixing interferometry based on volume Bragg gratings and laser diodes emitting at 405-nm wavelengths
V. Contreras, J. Toivonen, H. Martinez
In situ laser measurement of oxygen concentration and flue gas temperature utilizing chemical reaction kinetics
J. Viljanen, T. Sorvajärvi, J. Toivonen
2016
Micropatterning of silver nanoclusters embedded in polyvinyl alcohol films
N. Karimi, P. Kunwar, J. Hassinen, R. H. A. Ras, J. Toivonen
Stand-Off Radioluminescence Mapping of Alpha Emitters under Bright Lighting
J. Sand, A. Nicholl, E. Hrnecek, H. Toivonen, J. Toivonen, K. Peräjärvi
Detection of single microparticles in airflows by edge-filter enhanced self-mixing interferometry
V. Contreras, J. Lönnqvist, J. Toivonen
Sub-micron scale patterning of fluorescent silver nanoclusters using low-power laser
P. Kunwar, J. Hassinen, G. Bautista, R. H. A. Ras, J. Toivonen
Optical detection of radon decay in air
J. Sand, S. Ihantola, K. Peräjärvi, H. Toivonen, J. Toivonen
Identification of single microbial particles using electro-dynamic balance assisted laser-induced breakdown and fluorescence spectroscopy
S. Saari, S. Järvinen, T. Reponen, J. Mensah-Attipoe, P. Pasanen, J. Toivonen, J. Keskinen
Analysis of single mass-regulated particles in precisely controlled trap using laser-induced breakdown spectroscopy
S. T. Järvinen, J. Toivonen
Holographic patterning of fluorescent microstructures comprising silver nanoclusters
P. Kunwar, L. Turquet, J. Hassinen, R. H. A. Ras, J. Toivonen, G. Bautista
Third-harmonic generation imaging of three-dimensional microstructures fabricated by photopolymerization
P. Kunwar, J. Toivonen, M. Kauranen, G. Bautista
2015
Incoherent broadband cavity enhanced absorption spectroscopy using supercontinuum and superluminescent diode sources
A. Aalto, G. Genty, T. Laurila, J. Toivonen
Edge filter enhanced self-mixing interferometry
V. Contreras, J. Lonnqvist, J. Toivonen
Imaging of alpha emitters in a field environment
J. Sand, S. Ihantola, K. Peräjärvi, A. Nicholl
Rate constant and thermochemistry for K + O2 + N2 = KO2 + N2
T. Sorvajärvi, J. Viljanen, J. Toivonen, P. Marshall, P. Glarborg
2014
Direct laser writing of photostable fluorescent silver nanoclusters in polymer films
P. Kunwar, J. Hassinen, G. Bautista, R. H. A. Ras, J. Toivonen
Detection of Ni, Pb and Zn in water using electrodynamic single-particle levitation and laser-induced breakdown spectroscopy
S. T. Järvinen, S. Saari, J. Keskinen, J. Toivonen
In Situ Measurement Technique for Simultaneous Detection of K, KCI, and KOH Vapors Released During Combustion of Solid Biomass Fuel in a Single Particle Reactor
T. Sorvajärvi, N. DeMartini, J. Rossi, J. Toivonen
Radioluminescence yield of alpha particles in air
J. Sand, S. Ihantola, K. Peräjärvi, H. Toivonen, J. Toivonen
2013
Detection of Zinc and lead in water using evaporative preconcentration and single-particle laser-induced breakdown spectroscopy
S. T. Järvinen, J. Saarela, J. Toivonen
Fluorescence-Assisted Gamma Spectrometry for Surface Contamination Analysis
S. Ihantola, J. Sand, K. Perajarvi, J. Toivonen, H. Toivonen
Principles and calibration of collinear photofragmentation and atomic absorption spectroscopy
T. Sorvajärvi, J. Toivonen
2012
Optical detection of potassium chloride vapor using collinear photofragmentation and atomic absorption spectroscopy
T. Sorvajärvi, J. Saarela, J. Toivonen
Principles of UV-gamma coincidence spectrometry
S. Ihantola, J. Sand, K. Peräjärvi, J. Toivonen, H. Toivonen
2011
Optical detection of the anesthetic agent propofol in the gas phase
T. Laurila, T. Sorvajärvi, J. Saarela, J. Toivonen, D. W. Wheeler, L. Ciaffoni, G. A. D. Ritchie, C. F. Kaminski
Phase-sensitive method for background-compensated photoacoustic detection of NO2 using high-power LEDs
J. Saarela, T. Sorvajärvi, T. Laurila, J. Toivonen
Time-resolved fluorescence immunoassay for C-reactive protein using colloidal semiconducting nanoparticles
H. Härmä, J. Toivonen, J. T. Soini, P. Hänninen, W. J. Parak
2010
Extreme-value statistics in supercontinuum generation by cascaded stimulated Raman scattering
A. Aalto, G. Genty, J. Toivonen
Transversely excited multipass photoacoustic cell using electromechanical film as microphone
J. Saarela, J. Sand, T. Sorvajärvi, A. Manninen, J. Toivonen
2009
Electromechanical films as a photoacoustic transducer
A. Manninen, J. Sand, J. Saarela, T. Sorvajärvi, J. Toivonen, R. Hernberg
Fluorescence cross sections of bioaerosols and suspended biological agents
A. Manninen, M. Putkiranta, J. Saarela, A. Rostedt, T. Sorvajärvi, J. Toivonen, M. Marjamäki, J. Keskinen, R. Hernberg
Resonant photoacoustic cell for pulsed laser analysis of gases at high temperature
T. Sorvajärvi, A. Manninen, J. Toivonen, J. Saarela, R. Hernberg
Wavelength modulation waveforms in laser photoacoustic spectroscopy
J. Saarela, J. Toivonen, A. Manninen, T. Sorvajärvi, R. Hernberg