Publications

Journal articles 2018

• Chen, Y., Kivisaari, P., Pistol, M.-E., and Anttu, N.
  Optimized efficiency in InP nanowire solar cells with accurate 1D analysis.
  Nanotechnology 29, 045401 (2018)

• Partanen, M. and Tulkki, J.
  Light-driven mass density wave dynamics in optical fibers.
  Opt. Express 26, 22046 (2018)

• Partanen, M. and Tulkki, J.
  Mass-polariton theory of sharing the total angular momentum of light between the field and matter.
  Phys. Rev. A 98, 033813 (2018)

• Radevici, I., Tiira, J., Sadi, T., and Oksanen, J.
  Influence of photo-generated carriers on current spreading in double diode structures for electroluminescent cooling.
  Semicond. Sci. Technol. 33, 05LT01 (2018)

• Sadi, T., Kivisaari, P., Tiira, J., Radevici, I., Haggren, T., and Oksanen, J.
  Electroluminescent cooling in intracavity light emitters: modeling and experiments.
  IEEE J. Quantum Electron. 50, 18 (2018)

Conference proceedings 2018

• Partanen, M. and Tulkki, J.
  Measuring and engineering the atomic mass density wave of a Gaussian mass-polariton pulse in optical fibers.
  SPIE Photonics West, San Francisco, California, USA, Proc. SPIE 10526, Physics and Simulation of Optoelectronic Devices XXVI, 105260V (2018)

Journal articles 2017

• Kim, I., Kivisaari, P., Oksanen, J., and Suihkonen, S.
  Diffusion-Driven Charge Transport in Light Emitting Devices.
  Materials 10, 1421 (2017)

• Kivisaari, P., Berg, A., Karimi, M. A., Storm, K., Limpert, S., Oksanen, J., Samuelson, L., Pettersson, H., and Borgström, M. T.
  Optimization of current injection in AlGaInP core-shell nanowire light-emitting diodes.
  Nano Lett. 17, 3599 (2017)

• Kivisaari, P., Kim, I., Suihkonen, S., and Oksanen, J.
  Elimination of Lateral Resistance and Current Crowding in Large-Area LEDs by Composition Grading and Diffusion-Driven Charge Transport.
  Adv. Electron. Mater. 3, 1700103 (2017)

• Kivisaari, P., Sadi, T., Li, J., Rinke, P., and Oksanen, J.
  On the Monte Carlo Description of Hot Carrier Effects and Device Characteristics of III-N LEDs.
  Adv. Electron. Mater. 3, 1600494 (2017)

• Partanen, M. and Tulkki, J.
  Mass-polariton theory of light in dispersive media.
  Phys. Rev. A 96, 063834 (2017)

• Partanen, M., Häyrynen, T., Tulkki, J., and Oksanen, J.
  Generalized noise terms for the quantized fluctuational electrodynamics.
  J. Phys. B 50, 055503 (2017)

• Partanen, M., Häyrynen, T., Oksanen, J., and Tulkki, J.
  Photon mass drag and the momentum of light in a medium.
  Phys. Rev. A 95, 063850 (2017)

• Partanen, M., Häyrynen, T., Tulkki, J., and Oksanen, J.
  Quantized fluctuational electrodynamics for three-dimensional plasmonic structures.
  Phys. Rev. A 95, 013848 (2017)

• Partanen, M., Häyrynen, T., and Oksanen, J.
  Interference-exact radiative transfer equation.
  Sci. Rep. 7, 11534 (2017)

Conference proceedings 2017

• Kivisaari, P., Kim, I., Suihkonen, S., and Oksanen, J.
  Elimination of resistive losses in large-area LEDs by new diffusion-driven devices.
  SPIE Photonics West, San Francisco, California, USA, Proc. SPIE 10124, Light-Emitting Diodes: Materials, Devices, and Applications for Solid State Lighting XXI, 101240Z (2017)

• Partanen, M. and Tulkki, J.
  Momentum and rest mass of the covariant state of light in a medium.
  SPIE Photonics West, San Francisco, California, USA, Proc. SPIE 10098, Physics and Simulation of Optoelectronic Devices XXV, 100980P (2017)

• Radevici, I., Tiira, J., and Oksanen, J.
  Lock-in thermography approach for imaging the efficiency of light emitters and optical coolers.
  SPIE Photonics West, San Francisco, California, USA, Proc. SPIE 10121, Optical and Electronic Cooling of Solids II, 101210Q (2017)

• Sadi, T., Kivisaari, P., Tiira, J., Radevici, I., Haggren, T., and Oksanen, J.
  Modeling of charge and photon transport in coupled intracavity light emitters.
  International Conference on Numerical Simulation of Optoelectronic Devices (NUSOD), IEEE, 8010061 (2017)

• Tiira, J., Radevici, I., Haggren, T., Hakkarainen, T., Kivisaari, P., Lyytikainen, J., Aho, A., Tukiainen, A., Guina, M., and Oksanen, J.
  Intracavity double diode structures with GaInP barrier layers for thermophotonic cooling.
  SPIE Photonics West, San Francisco, California, USA, Proc. SPIE 10121, Optical and Electronic Cooling of Solids II, 1012109 (2017)

Journal articles 2016

• Han, H., Zhang, Y., Nan Wang, Samani, M. K., Ni, Y., Mijbil, Z. Y., Edwards, M., Xiong, S., Sääskilahti, K., Murugesan, M., Fu, Y., Ye, L., Sadeghi, H., Bailey, S., Kosevich, Y. A., Lambert, C. J., Liu, J., and Volz, S.
  Functionalization mediates heat transport in graphene nanoflakes.
  Nat. Commun. 7, 11281 (2016)

• Häyrynen, T. and Oksanen, J.
  Quantum description of light propagation in generalized media.
  J. Opt. 18, 025401 (2016)

• Kivisaari, P., Sadi, T., Oksanen, J., and Tulkki, J.
  Monte Carlo study of non-quasiequilibrium carrier dynamics in III-N LEDs.
  Opt. Quant. Electron. 48, 154 (2016)

• Olsson, A., Tiira, J., Partanen, M., Hakkarainen, T., Koivusalo, E., Tukiainen, A., Guina, M., and Oksanen, J.
  Optical energy transfer and loss mechanisms in coupled intracavity light emitters.
  IEEE Trans. Electron Dev. 63, 3567 (2016)

• Sääskilahti, K., Oksanen, J., Tulkki, J., McGaughey, J. H., and Volz, S.
  Vibrational mean free paths and thermal conductivity of amorphous silicon from non-equilibrium molecular dynamics simulations.
  AIP Adv. 6, 121904 (2016)

• Sääskilahti, K., Oksanen, J., Tulkki, J., and Volz, S.
  Spectral mapping of heat transfer mechanisms at liquid-solid interfaces.
  Phys. Rev. E 93, 052141 (2016)

• Xiong, S., Sääskilahti, K., Kosevich, Y. A., Han, H., Donadio, D., and Volz S.
  Blocking Phonon Transport by Structural Resonances in Alloy-Based Nanophononic Metamaterials Leads to Ultralow Thermal Conductivity.
  Phys. Rev. Lett. 117, 025503 (2016)

Conference proceedings 2016

• Partanen, M., Häyrynen, T., Oksanen, J., and Tulkki, J.
  Photon momentum and optical forces in cavities.
  SPIE Photonics West, San Francisco, California, USA, Proc. SPIE 9742, Physics and Simulation of Optoelectronic Devices XXIV, 974217 (2016)

Journal articles 2015

• Jussila, H., Kivisaari, P., Lemettinen, J., Tanaka, T., and Sopanen, M.
  Two-Photon Absorption in GaAs{1-x-y}P{y}N{x} Intermediate-Band Solar Cells.
  Phys. Rev. Appl. 3, 054007 (2015)

• Kivisaari, P., Oksanen, J., Tulkki, J., and Sadi, T.
  Monte Carlo simulation of hot carrier transport in III-N LEDs.
  J. Comput. Electron. 14, 382 (2015)

• Oksanen, J. and Tulkki, J.
  Thermophotonics: LEDs feed on waste heat.
  Nature Photon. 9, 782 (2015)

• Partanen, M., Häyrynen, T., Tulkki, J., and Oksanen, J.
  Commutation-relation-preserving ladder operators for propagating optical fields in nonuniform lossy media.
  Phys. Rev. A 92, 033839 (2015)

• Riuttanen, L., Kivisaari, P., Svensk, O., Oksanen, J., and Suihkonen, S.
  Diffusion Injection in a Buried Multiquantum Well Light-Emitting Diode Structure.
  IEEE T. Electron Dev. 62, 902 (2015)

• Riuttanen, L., Kivisaari, P., Svensk, O., Oksanen, J., and Suihkonen, S.
  Electrical injection to contactless near-surface InGaN quantum well.
  Appl. Phys. Lett. 107, 051106 (2015)

• Sadi, T., Kivisaari, P., Oksanen, J. , and Tulkki, J.
  Microscopic simulation of hot electron transport in III-N LEDs.
  Opt. Quant. Electron. 47, 1509 (2015)

• Sääskilahti, K., Oksanen, J., Volz, S., and Tulkki, J.
  Frequency-dependent phonon mean free path in carbon nanotubes from non-equilibrium molecular dynamics.
  Phys. Rev. B 91, 115426 (2015)

• Sääskilahti, K., Oksanen, J., Volz, S., and Tulkki, J.
  Nonequilibrium phonon mean free paths in anharmonic chains.
  Phys. Rev. B 92, 245411 (2015)

Conference proceedings 2015

• Kivisaari, P., Sadi, T. , Oksanen, J. , and Tulkki, J.
  Bipolar Monte Carlo simulation of electrons and holes in III-N LEDs.
  SPIE Photonics West, San Francisco, California, USA, Proc. SPIE 9363, Gallium Nitride Materials and Devices X, 93631S (2015)

• Riuttanen, L., Kivisaari, P., Svensk, O., Vasara, T., Myllys, P., Oksanen, J., Suihkonen, S.
  Vertical excitation profile in diffusion injected multi-quantum well light emitting diode structure.
  SPIE Photonics West, San Francisco, California, USA, Proc. SPIE 9363, Gallium Nitride Materials and Devices X, 93632A (2015)

• Sadi, T., Oksanen, J., and Tulkki, J.
  Optimized plasmonic light emission enhancement in III-N quantum-well emitters.
  SPIE Photonics West, San Francisco, California, USA, Proc. SPIE 9357, Physics and Simulation of Optoelectronic Devices XXIII, 93570J (2015)

Journal articles 2014

• Olsson, A., Aierken, A., Jussila, H., Bauer, J., Oksanen, J., Breitenstein, O., Lipsanen, H., and Tulkki, J.
  Yield and leakage currents of large area lattice matched InP/InGaAs heterostructures.
  J. Appl. Phys. 116, 083105 (2014)

• Partanen, M., Häyrynen, T., Oksanen, J., and Tulkki, J.
  Thermal balance and photon-number quantization in layered structures.
  Phys. Rev. A 89, 033831 (2014)

• Partanen, M., Häyrynen, T., Oksanen, J., and Tulkki, J.
  Unified position-dependent photon-number quantization in layered structures
  Phys. Rev. A 90, 063804 (2014)

• Riuttanen, L., Kivisaari, P., Nykänen, H., Svensk, O., Suihkonen, S., Oksanen, J., Tulkki, J., and Sopanen, M.
  Diffusion injected multi-quantum well light-emitting diode structure.
  Appl. Phys. Lett. 104, 081102 (2014)

• Sadi, T., Kivisaari, P., Oksanen, J., and Tulkki, J.
  On the correlation of the Auger generated hot electron emission and efficiency droop in III-N light-emitting diodes.
  Appl. Phys. Lett. 105, 091106 (2014)

• Sadi, T., Oksanen, J., and Tulkki, J.
  Improving light extraction from GaN light-emitting diodes by buried nano-gratings.
  IEEE J. Quant. Electron. 50, 141 (2014)

• Sääskilahti, K., Oksanen, J., Tulkki, J., and Volz, S.
  Role of anharmonic phonon scattering in the spectrally decomposed thermal conductance at planar interfaces.
  Phys. Rev. B 90, 134312 (2014)

• Sääskilahti, K., Oksanen, J., and Tulkki, J.
  Quantum Langevin equation approach to electromagnetic energy transfer between dielectric bodies in an inhomogeneous environment.
  Phys. Rev. B 89, 134301 (2014)

• Xiong, S., Kosevich, Y. A., Sääskilahti, K., Ni, Y., and Volz, S.
  Tunable thermal conductivity in silicon twinning superlattice nanowires.
  Phys. Rev. B 90, 195439 (2014)

Conference proceedings 2014

• Kivisaari, P., Sadi, T., Oksanen, J., and Tulkki, J.
  Monte Carlo simulation of hot electron transport in III-N LEDs.
  In. Proc. IEEE Numerical Simulation of Optoelectronic Devices (NUSOD), 21, (2014)

• Kivisaari, P., Sadi, T., Oksanen, J., and Tulkki, J.
  Monte Carlo-drift-diffusion simulation of electron current transport in III-N LEDs.
  SPIE Photonics West, San Francisco, California, USA, Proc. SPIE 8980, Physics and Simulation of Optoelectronic Devices XXII, 898003 (2014)

• Partanen, M., Häyrynen, T., Oksanen, J., and Tulkki, J.
  Position-dependent photon operators in the quantization of the electromagnetic field in dielectrics at local thermal equilibrium.
  SPIE Photonics Europe, Brussels, Belgium, Proc. SPIE 9136, Nonlinear Optics and Its Applications VIII; and Quantum Optics III, 91362B (2014)

• Sadi, T., Oksanen, J., and Tulkki, J.
  Plasmonic enhancement and losses in light-emitting quantum-well structures incorporating metallic gratings.
  SPIE Photonics West, San Francisco, California, USA, Proc. SPIE 8980, Physics and Simulation of Optoelectronic Devices XXII, 89800Z (2014)

Journal articles 2013

• Dhaka, V., Oksanen, J., Jiang, H., Haggren, T., Nykanen, A., Sanatinia, R., Kakko, J.-P., Huhtio, T., Mattila, M., Ruokolainen, J., Anand, S., Kauppinen, E., Lipsanen, H.
  Aluminum-Induced Photoluminescence Red Shifts in Core-Shell GaAs/AlxGa1-xAs Nanowires.
  Nano Lett. 13, 8, 3581 (2013)

• Heikkilä, O., Oksanen, J., and Tulkki J.
  A fluctuational electrodynamics model for the optimization of light-extraction efficiency in thin-film light-emitting diodes.
  J. Appl. Phys. 114, 223108 (2013)

• Heikkilä, O., Oksanen, J., and Tulkki J.
  Influence of internal absorption and interference on the optical efficiency of thin-film GaN-InGaN light-emitting diodes.
  Appl. Phys. Lett. 102, 111111 (2013)

• Homeyer, E., Mattila, P., Oksanen, J., Sadi, T., Nykänen, H., Suihkonen, S., Symonds, C., Tulkki, J., Tuomisto, F., Sopanen, M., and Bellessa, J.
  Enhanced light extraction from InGaN/GaN quantum wells with silver gratings.
  Appl. Phys. Lett., 102(8), 081110 (2013)

• Kivisaari, P., Oksanen, J., and Tulkki, J.
  Current injection to free-standing III-N nanowires by bipolar diffusion.
  Appl. Phys. Lett. 103, 031103 (2013)

• Kivisaari, P., Oksanen, J., and Tulkki, J.
  Polarization doping and the efficiency of III-nitride optoelectronic devices.
  Appl. Phys. Lett. 103, 211118 (2013)

• Olsson, A., Aierken, A., Oksanen, J., Suihkonen, S., Lipsanen, H., and Tulkki, J.
  Temperature dependence of droop onset in optically pumped intrinsic InGaAs/InP heterostructures.
  Appl. Phys. Lett. 102, 081123 (2013)

• Riuttanen, L., Kivisaari, P., Mäntyoja, N., Oksanen, J., Ali, M., Suihkonen, S., and Sopanen, M.
  Recombination lifetime in InGaN/GaN based light emitting diodes at low current densities by differential carrier lifetime analysis.
  Phys. Status Solidi C, 10(3), 327-331 (2013)

• Sadi, T., Oksanen, J., and Tulkki, J.
  Effect of plasmonic losses on light emission enhancement in quantum-wells coupled to metallic gratings.
  J. Appl. Phys. 114, 223104 (2013)

• Sadi, T., Oksanen, J., Tulkki, J., Mattila, P., and Bellessa, J.
  The Green's Function Description to Emission Enhancement in Grated LED Structures.
  IEEE. J. Sel. Top. Quant. 19, 5 (2013)

• Sadi, T. and Schwierz, F.
  Improved empirical non-linear compact model for studying intermodulation in HEMTs and LDMOSFETs.
  Solid-State Electronics, 81(1), 91-100 (2013)

• Sääskilahti, K., Oksanen, J., and Tulkki, J.
  Thermal balance and quantum heat transport in nanostructures thermalized by local Langevin heat baths.
  Phys. Rev. E 88, 012128 (2013)

Conference proceedings 2013

• Häyrynen, T., Oksanen, J., Sadi, T., and Tulkki, J.
  Generation of nonclassical light by nonlinear cavities.
  SPIE Optics + Optoelectronics, Prague, Czech Republic, Proc. SPIE 8773, Photon Counting Applications IV; and Quantum Optics and Quantum Information Transfer and Processing, 87730W (2013)

• Kivisaari, P., Oksanen, J., and Tulkki, J.
  Diffusion-assisted current spreading for III-Nitride light-emitting applications.
  SPIE Photonics West, San Francisco, California, USA, Proc. SPIE 8625, Gallium Nitride Materials and Devices VIII, 862528 (2013)

• Kivisaari, P., Sadi, T., Oksanen, J., and Tulkki, J.
  Coupled Monte Carlo-drift-diffusion simulation of transport in III-N LEDs.
  16th IEEE International Workshop on Computational Electronics (IWCE) 4-7 June 2013, Nara, Japan (2013)

• Partanen, M., Häyrynen, T., Oksanen, J., and Tulkki, J.
  Noiseless amplification of weak coherent fields without external energy.
  SPIE Optics + Optoelectronics, Prague, Czech Republic, Proc. SPIE 8773, Photon Counting Applications IV; and Quantum Optics and Quantum Information Transfer and Processing, 877312 (2013)

• Sadi, T.
  The Monte Carlo approach for investigating electrothermal effects in nanostructures.
  16th IEEE International Workshop on Computational Electronics (IWCE) 4-7 June 2013, Nara, Japan. Invited (2013)

• Sadi, T., Oksanen, J., Tulkki, J.
  Efficiency of Light Emission in Light Emitters Coupled to Surface Plasmons
  34th Progress In Electromagnetics Research Symposium 12-15 August 2013, Stockholm, Sweden (2013)

• Sadi, T., Oksanen, J., Tulkki, J.
  Green's function approach to study plasmonic luminescence enhancement in grated multilayer structures.
  SPIE Photonics West, San Francisco, California, USA, Proc. SPIE 8619, Physics and Simulation of Optoelectronic Devices XXI, 86190Q (2013)

• Sadi, T., Oksanen, J., Tulkki, J.
  Light extraction enhancement from GaN quantum-well structures with metallic grating.
  14th International Conference on Physics of Light-Matter Coupling in Nanostructures 27-31 May 2013, Crete, Greece (2013)

• Vaskuri, A., Kärhä, P., Baumgartner, H., Oksanen, J., Riuttanen, L., Andor, G., and Ikonen, E.
  Radiometric determination of the junction temperature of light-emitting diodes.
  Proceedings of CIE Centenary Conference "Towards a New Century of Light", Paris, France, April 15-16, 308-316 (2013)

Journal articles 2012

• Chi, K.-L., Shi, J.-W., Jang, C. H., Kivisaari, P., Oksanen, J., Tulkki, J., Lee, M. L., and Sheu, J. K.
  Carrier Dynamics in High-Efficiency Blue GaN Light-Emitting Diodes Under Different Bias Currents and Temperatures.
  IEEE Photonics J. 4, 1870 (2012)

• Häyrynen, T., Oksanen, J., and Tulkki, J.
  Nonlinear laser cavities as nonclassical light sources.
  Europhys. Lett. 100, 5, 54001 (2012)

• Häyrynen, T., Oksanen, J., and Tulkki, J.
  Photon dynamics of amplified and damped cavity fields.
  Phys. Status Solidi C 9, 1330 (2012)

• Jussila, H., Mattila, P., Oksanen, J., Perros, A., Riikonen, J., Bosund, M., Varpula, A., Huhtio, T., Lipsanen, H., and Sopanen, M.
  High-k GaAs metal insulator semiconductor capacitors passivated by ex-situ plasma-enhanced atomic layer deposited AlN for Fermi-level unpinning.
  Appl. Phys. Lett. 100, 071606 (2012)

• Kivisaari, P., Oksanen, J., and Tulkki, J.
  Effects of lateral current injection in GaN multi-quantum well light-emitting diodes.
  J. Appl. Phys. 111, 103120 (2012)

• Kivisaari, P., Riuttanen, L., Oksanen, J., Suihkonen S., Ali, M., Lipsanen, H., and Tulkki, J.
  Electrical measurement of internal quantum efficiency and extraction efficiency of III-N light-emitting diodes.
  Appl. Phys. Lett. 101, 021113 (2012)

• Partanen, M., Häyrynen, T., Oksanen, J., and Tulkki, J.
  Noiseless amplification of weak coherent fields exploiting energy fluctuations of the field.
  Phys. Rev. A 86, 6, 063804 (2012)

• Sadi, T., Kelsall, R. W., Pilgrim, N. J., Thobel, J. L., and Dessenne, F.
  Monte Carlo study of self-heating in nanoscale devices.
  Journal of computational electronics 11, 1, 118 (2012)

• Sääskilahti, K., Oksanen, J., Linna, R., and Tulkki, J.
  Thermal conduction and interface effects in nanoscale Fermi-Pasta-Ulam conductors.
  Phys. Rev. E 86, 3, 031107 (2012)

Conference proceedings 2012

• Häyrynen, T., Oksanen, J., and Tulkki, J.
  Quantum aspects of optical energy transfer in cavities and layered media.
  SPIE Photonics Europe, Brussels, Belgium, Proc. SPIE, 8440, Quantum Optics II, 844007 (2012)

• Sadi, T.
  Electrothermal Monte Carlo Simulation of Nanoelectronic Devices.
  The Phonon School (21-22 May, 2012) companion to the 15th IEEE International Workshop on Computational Electronics (IWCE) 22-25 May, 2012, Madison, USA. Invited (2012)

• Sääskilahti, K., Oksanen, J., Linna, R., and Tulkki, J.
  Phonon interference and anharmonicity effects in nanoconstrictions.
  PHONONS 2012: XIV International Conference on Phonon Scattering in Condensed Matter, Ann Arbor, MI USA, AIP Conf. Proc. 1506, 15-21 (2012)

Journal articles 2011

• Heikkilä, Oskari; Oksanen, Jani; Tulkki, Jukka.
  Light extraction limits in textured GaN-InGaN light-emitting diodes: Radiative transfer analysis.
  Appl. Phys. Lett. 99, 161110 (2011)

• Häyrynen, Teppo; Oksanen, Jani; Tulkki, Jukka.
  Dynamics of cavity fields with dissipative and amplifying couplings through multiple quantum two-state systems.
  Phys. Rev. A 83, 1, 013801 (2011)

Conference proceedings 2011

• Heikkilä, Oskari; Oksanen, Jani; Tulkki, Jukka.
  Transport equation model for the optics of light-emitting diodes with arbitrary surface microstructure.
  SPIE Photonics West, San Francisco, California, USA, Proc. SPIE 7933, Physics and Simulation of Optoelectronic Devices XIX, 793315 (2011)

• Häyrynen, Teppo; Oksanen, Jani; Tulkki, Jukka
  Modeling the evolution of quantum optical states in optoelectronic devices.
  SPIE Photonics West, San Francisco, California, USA, Proc. SPIE 7933, Physics and Simulation of Optoelectronic Devices XIX, 79331V (2011)

• Kivisaari, Pyry; Oksanen, Jani; Tulkki, Jukka.
  Effects of direct lateral Current Injection on the Performance, Overall Efficiency and Emission Distribution in GaN LED structures: a 2D Computational Study.
  2011 MRS Spring Meeting, San Francisco, California, USA, MRS Proc. 1370 (2011)

• Oksanen, Jani; Tulkki, Jukka.
  Effects of photon transport, emission saturation, and reflection losses on thermophotonic cooling.
  SPIE Photonics West, San Francisco, California, USA, Proc. SPIE 7951, Laser Refrigeration of Solids IV, 79510H (2011)

Journal articles 2010

• Heikkilä, Oskari; Oksanen, Jani; Tulkki, Jukka
  The challenge of unity wall plug efficiency: The effects of internal heating on the efficiency of light emitting diodes.
  J. Appl. Phys. 107, 3, 033105 (2010)

• Häyrynen, Teppo; Oksanen, Jani; Tulkki, Jukka
  Derivation of generalized quantum jump operators and comparison of the microscopic single photon detector models.
  Eur. Phys. J. D 56, 1, 113 (2010)

• Häyrynen, Teppo; Oksanen, Jani; Tulkki, Jukka
  Unified quantum jump superoperator for optical fields from the weak- to the strong-coupling limit.
  Phys. Rev. A 81, 6, 063804 (2010)

• Oksanen, Jani; Tulkki, Jukka
  Drooping as a simple characterization tool for extraction efficiency and optical losses in light emitting diodes.
  Appl. Phys. Lett. 97, 13 (2010)

• Oksanen, Jani; Tulkki, Jukka
  Thermophotonic heat pump-a theoretical model and numerical simulations.
  J. Appl. Phys. 107, 9, 093106 (2010)

Conference proceedings 2010

• Heikkilä, Oskari; Oksanen, Jani; Tulkki, Jukka
  Role of the electron blocking layer in the current transport of efficient III-N light-emitting diodes.
  SPIE Photonics West, San Francisco, California, USA, Proc. SPIE 7597, Physics and Simulation of Optoelectronic Devices XVIII, 75970E (2010)

• Oksanen, Jani; Tulkki, Jukka
  Thermophotonic heat pump - Towards the first demonstration of electroluminescent cooling?
  SPIE Photonics West, San Francisco, California, USA, Proc. SPIE 7614, Laser Refrigeration of Solids III, 76140F (2010)