Dr. Antti Härkönen Profile

Dr. Antti Härkönen

Professor at Tampere Univ

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Author

Publications (17)

Proceedings Article | 11 August 2023 Paper

Enhancing the axial resolution of an optoacoustic microscopy imaging instrument by using a pico-second pulse duration laser

Gianni Nteroli, Giulia Messa, Stella Koutsikou, Manoj Dasa, Antti Penttinen, Antti Härkönen, Mircea Guina, Adrian Podoleanu, Adrian Bradu

Proceedings Volume 12631, 1263106 (2023) https://doi.org/10.1117/12.2670901

KEYWORDS: Optoacoustics, Pulsed laser operation, Microscopy, Equipment, Image resolution, Resolution enhancement technologies, Picosecond phenomena, Range imaging, Neuroimaging, In vivo imaging

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Proceedings Article | 12 June 2023 Presentation

Flexible high-energy and high-repetition-rate microchip laser platform for sensing applications (Conference Presentation)

Antti Penttinen, Antti Härkönen, Mircea Guina, Antti Rantaniemi

Proceedings Volume PC12537, PC1253705 (2023) https://doi.org/10.1117/12.2670119

KEYWORDS: Laser applications, Semiconductor lasers, Q switched lasers, Pulsed laser operation, LIDAR, Tunable lasers, Semiconductors, Remote sensing, Power consumption, Picosecond phenomena

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SPIE Journal Paper | 29 November 2022 Open Access

Enhanced resolution optoacoustic microscopy using a picosecond high repetition rate Q-switched microchip laser

Gianni Nteroli, Giulia Messa, Manoj Dasa, Antti Penttinen, Antti Härkönen, Mircea Guina, Adrian G. Podoleanu, Stella Koutsikou, Adrian Bradu

JBO, Vol. 27, Issue 11, 110501, (November 2022) https://doi.org/10.1117/12.10.1117/1.JBO.27.11.110501

KEYWORDS: Picosecond phenomena, Equipment, Optoacoustics, Pulsed laser operation, Resolution enhancement technologies, Transducers, Microscopy, Q switched lasers, Image resolution, Acoustics

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Proceedings Article | 21 February 2020 Paper

73-fs SESAM mode-locked Tm,Ho:CNGG laser at 2061 nm

Yicheng Wang, Yongguang Zhao, Zhongben Pan, Soile Suomalainen, Antti Härkönen, Mircea Guina, Uwe Griebner, Li Wang, Pavel Loiko, Xavier Mateos, Weidong Chen, Valentin Petrov

Proceedings Volume 11259, 1125929 (2020) https://doi.org/10.1117/12.2548180

KEYWORDS: Mode locking, Crystals, Holmium, Thulium, Continuous wave operation, Laser crystals

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Proceedings Article | 20 December 2019 Paper

Sub-100-fs bulk solid-state lasers near 2-micron

Valentin Petrov, Yicheng Wang, Weidong Chen, Zhongben Pan, Yongguang Zhao, Li Wang, Mark Mero, Sun Young Choi, Fabian Rotermund, Won Bae Cho, Wei Jing, Hui Huang, Hualei Yuan, Huaqiang Cai, Lizhen Zhang, Zhoubin Lin, Pavel Loiko, Xavier Mateos, Xiaodong Xu, Jun Xu, Haohai Yu, Huaijin Zhang, Soile Suomalainen, Mircea Guina, Antti Härkönen, Uwe Griebner

Proceedings Volume 11209, 112094G (2019) https://doi.org/10.1117/12.2549618

KEYWORDS: Crystals, Mode locking, Graphene, Ceramics, Thulium, Laser crystals, Holmium

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Proceedings Article | 16 May 2018 Paper

Highly efficient Ho:KY(WO4)2 thin-disk lasers at 2.06 µm

Xavier Mateos, Pavel Loiko, Samir Lamrini, Karsten Scholle, Peter Fuhrberg, Soile Suomalainen, Antti Härkönen, Mircea Guina, Sergei Vatnik, Ivan Vedin, Magdalena Aguiló, Francesc Díaz, Yicheng Wang, Uwe Griebner, Valentin Petrov

Proceedings Volume 10713, 107130J (2018) https://doi.org/10.1117/12.2316822

KEYWORDS: Infrared lasers, Holmium, Continuous wave operation, Absorption, Pulsed laser operation, Doping, Spectroscopy, Laser damage threshold

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Proceedings Article | 15 February 2012 Paper

Recent advances in the development of yellow-orange GaInNAs-based semiconductor disk lasers

T. Leinonen, V.-M. Korpijärvi, A. Härkönen, M. Guina

Proceedings Volume 8242, 824208 (2012) https://doi.org/10.1117/12.906204

KEYWORDS: Mirrors, Quantum wells, Gallium arsenide, Semiconductor lasers, Semiconductors, Nitrogen, Diamond, Disk lasers, Crystals, Visible radiation

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Proceedings Article | 15 February 2012 Paper

Passively mode-locked GaSb-based VECSELs emitting sub-400-fs pulses at 2 µm

M. Guina, A. Härkönen, J. Paajaste, J.-P. Alanko, S. Suomalainen, C. Grebing, G. Steinmeyer

Proceedings Volume 8242, 824204 (2012) https://doi.org/10.1117/12.907399

KEYWORDS: Mode locking, Mirrors, Gallium antimonide, Quantum wells, Picosecond phenomena, Ultrafast phenomena, Reflectivity, Absorption, Mid-IR, Semiconductors

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Proceedings Article | 25 November 2010 Paper

Yellow-red semiconductor disk lasers for biophotonics applications

Tomi Leinonen, Antti Härkönen, Ville-Markus Korpijärvi, Janne Puustinen, Mircea Guina

Proceedings Volume 7376, 737616 (2010) https://doi.org/10.1117/12.871059

KEYWORDS: Mirrors, Semiconductor lasers, Semiconductors, Optical filters, Disk lasers, Laser resonators, Quantum wells, Diamond, Nonlinear crystals, Crystals

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Proceedings Article | 28 April 2010 Paper

High-power narrow-linewidth optically pumped dilute nitride disk laser with emission at 589 nm

Tomi Leinonen, Antti Härkönen, Ville-Markus Korpijärvi, Mircea Guina, Ryan Epstein, James Murray, Gregory Fetzer

Proceedings Volume 7720, 772016 (2010) https://doi.org/10.1117/12.854747

KEYWORDS: Mirrors, Nonlinear crystals, Quantum wells, Crystals, Fabry–Perot interferometers, Semiconductor lasers, Disk lasers, Laser resonators, Reflectivity, Diamond

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Proceedings Article | 28 April 2010 Paper

2.34-µm electrically pumped VECSEL with buried tunnel junction

Antti Härkönen, Alexander Bachmann, Shamsul Arafin, Kimmo Haring, Jukka Viheriälä, Mircea Guina, Markus-Christian Amann

Proceedings Volume 7720, 772015 (2010) https://doi.org/10.1117/12.854467

KEYWORDS: Mirrors, Semiconductor lasers, Gallium antimonide, Vertical cavity surface emitting lasers, Mid-IR, Environmental monitoring, Laser applications, Reflectivity, Gases, Molecular beam epitaxy

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Proceedings Article | 17 February 2010 Paper

A 7-W 1178nm GaInNAs based disk laser for guide star applications

T. Leinonen, V.-M. Korpijärvi, J. Puustinen, A. Härkönen, M. Guina, M. Pessa

Proceedings Volume 7578, 757811 (2010) https://doi.org/10.1117/12.841365

KEYWORDS: Quantum wells, Mirrors, Disk lasers, Semiconductor lasers, Diamond, Nitrogen, Luminescence, Reflectivity, Output couplers, Stars

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Proceedings Article | 28 February 2009 Paper

GaSb-based compounds tailored for MID-IR disk lasers

M. Guina, A. Härkönen, S. Suomalinen, J. Paajaste, R. Koskinen, M. Pessa, O. Okhotnikov

Proceedings Volume 7193, 71931F (2009) https://doi.org/10.1117/12.816221

KEYWORDS: Mirrors, Quantum wells, Disk lasers, Gallium antimonide, Semiconductor lasers, Semiconductors, Mode locking, Heterojunctions, Diamond, Mid-IR

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Proceedings Article | 8 May 2008 Paper

3.5 W GaInNAs disk laser operating at 1220 nm

Mircea Guina, Ville-Markus Korpijärvi, Jussi Rautiainen, Pietari Tuomisto, Janne Puustinen, Antti Härkönen, Oleg Okhotnikov

Proceedings Volume 6997, 69970Q (2008) https://doi.org/10.1117/12.780953

KEYWORDS: Mirrors, Quantum wells, Nitrogen, Disk lasers, Semiconductor lasers, Plasma, Semiconductors, Output couplers, Gallium arsenide, Reflectivity

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Proceedings Article | 14 February 2008 Paper

Comparison of thermal management techniques for semiconductor disk lasers

S. Giet, A. Kemp, D. Burns, S. Calvez, M. Dawson, S. Suomalainen, A. Harkonen, M. Guina, O. Okhotnikov, M. Pessa

Proceedings Volume 6871, 687115 (2008) https://doi.org/10.1117/12.761616

KEYWORDS: Semiconductors, Diamond, Resistance, Silicon carbide, Semiconductor lasers, Disk lasers, Output couplers, Quantum wells, Heatsinks, Temperature metrology

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Proceedings Article | 14 February 2008 Paper

1-W red light generation by intracavity doubling in a 1240 nm GaInNAs semiconductor disk laser

Jussi Rautiainen, Antti Härkönen, Pietari Tuomisto, Janne Konttinen, Lasse Orsila, Mircea Guina, Oleg Okhotnikov

Proceedings Volume 6871, 68711A (2008) https://doi.org/10.1117/12.762857

KEYWORDS: Mirrors, Semiconductor lasers, Disk lasers, Semiconductors, Quantum wells, Second-harmonic generation, Crystals, Frequency conversion, Reflectivity, Diamond

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Proceedings Article | 9 March 2007 Paper

Advances in power scalable, tunable, and mode-locked semiconductor disk lasers

O. Okhotnikov, Antti Härkönen, E. Saarinen, J. Rautiainen, R. Herda, M. Guina

Proceedings Volume 6451, 64510B (2007) https://doi.org/10.1117/12.723847

KEYWORDS: Mode locking, Semiconductor lasers, Semiconductors, Disk lasers, Mirrors, Laser resonators, Optical filters, Laser optics, Optical pumping, Quantum wells

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Showing 5 of 17 publications

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