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Employment (2)

Vexlum Oy: Tampere, FI

2024-03-01 to present | Senior Process Development Engineer (Research & Development)
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Heikki Virtanen

Tampere University: Tampere, FI

2024-12-31
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Tampere University

Education and qualifications (1)

Tampere University: Tampere, FI

2024-12-31
Education
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Tampere University

Works (38)

Integration of a Miniature Multichannel Laser Diode Chip to a Silicon Photonics Integrated Circuit Using Laser-Assisted Bonding

2024 IMAPS Nordic Conference on Microelectronics Packaging, NordPac 2024
2024 | Conference paper | Author
DOI: 10.23919/NordPac61094.2024.10582269
SOURCE-WORK-ID:

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EID:

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Part of ISBN: 9789189896932
Part of ISBN: 979-8-3503-5553-6
Contributors: Aleksandr Vlasov; Santeri Lehtinen; Evgenii Lepukhov; Heikki Virtanen; Samu-Pekka Ojanen; Jukka Viheriala; Mircea Guina
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Tampere University

Laser-Assisted Bonding of a Miniature Multichannel Laser Diode Chip to a Silicon Photonics Integrated Circuit with Through-Silicon Alignment

2024 IEEE 10th Electronics System-Integration Technology Conference, ESTC 2024 - Proceedings
2024 | Conference paper | Author
DOI: 10.1109/ESTC60143.2024.10712039
SOURCE-WORK-ID:

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EID:

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Part of ISBN: 9798350390360
Contributors: Aleksandr A. Vlasov; Santeri Lehtinen; Evgenii Lepukhov; Heikki Virtanen; Samu-Pekka Ojanen; Jukka Viheriälä; Mircea Guina
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Tampere University

Improving P-Doped DBRs Operation at Cryogenic Temperatures

IEEE Photonics Journal
2024-08-01 | Journal article | Author
DOI: 10.1109/JPHOT.2024.3402501
SOURCE-WORK-ID:

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EID:

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Contributors: Behzad Namvar; Topi Uusitalo; Heikki Virtanen; Mircea Guina; Jukka Viheriälä
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Tampere University
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Preferred source (of 2)‎

Development of VCSELs for cyogenic (4.2 K) optical interfaces

2023 IEEE Photonics Society Summer Topicals Meeting Series (SUM)
2023 | Conference paper | Author
DOI: 10.1109/SUM57928.2023.10224417
SOURCE-WORK-ID:

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EID:

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Part of ISBN: 9798350347203
Contributors: Jukka Viheriälä; Topi Uusitalo; Heikki Virtanen; Behzad Namvar; Patrik Rajala; Sanna Ranta; Teemu Valtteri Hakkarainen; Antti Tukiainen; Guilhem Almuneau; Mircea Guina
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Tampere University

Laser-Assisted Bonding Approach for Photonic Integration Processes

24th European Microelectronics and Packaging Conference, EMPC 2023
2023 | Conference paper | Author
DOI: 10.23919/EMPC55870.2023.10418296
SOURCE-WORK-ID:

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EID:

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Part of ISBN: 978-1-6654-8736-8
Contributors: Aleksandr A. Vlasov; Topi Uusitalo; Evgenii Lepukhov; Heikki Virtanen; Samu-Pekka Ojanen; Jukka Viheriälä; Mircea Guina
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Tampere University

Reconfigurable Vacuum Sample Holder for Through-Silicon Microscopy and Laser-Assisted Bonding

IEEE Photonics Journal
2023-10 | Journal article
DOI: 10.1109/JPHOT.2023.3302404
Contributors: Aleksandr Andreevich Vlasov; Topi Uusitalo; Heikki Virtanen; Jukka Viheriälä; Mircea Guina
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High peak power tapered RWG laser diodes for eye-safe LIDAR applications around 1.5 μm wavelength

High-Power Diode Laser Technology XX
2022 | Conference paper | Author
DOI: 10.1117/12.2608601
SOURCE-WORK-ID:

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EID:

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Part of ISBN: 9781510648371
Contributors: Topi Uusitalo; Jukka Viheriälä; Heikki Virtanen; Santeri Hanhinen; Roosa Hytönen; Jari Lyytikäinen; Mircea Guina
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Tampere University

High Peak Power Laser Diodes for Eye Safe LIDAR with Integrated Wavelength Locking Element

Conference on Lasers and Electro-Optics Europe European Quantum Electronics Conference, 1/01/00
2019-10-17 | Conference abstract | Author
DOI: 10.1109/CLEOE-EQEC.2019.8872661
SOURCE-WORK-ID:

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EID:

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Contributors: Jukka Viheriälä; Antti Aho; Heikki Virtanen; Jarno Reuna; Jari Lyytikäinen; Mircea Guina
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Tampere University

High power GaInNAs superluminescent diodes emitting over 400 mW in the 1.2 μm wavelength range

Applied Physics Letters
2019-08-19 | Journal article
DOI: 10.1063/1.5111012
Contributors: A. T. Aho; J. Viheriälä; H. Virtanen; N. Zia; R. Isoaho; M. Guina
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High-Power 1.5-$\mu$ m Broad Area Laser Diodes Wavelength Stabilized by Surface Gratings

IEEE Photonics Technology Letters
2018-11-01 | Journal article
DOI: 10.1109/LPT.2018.2870304
Contributors: Antti T. Aho; Jukka Viheriala; Heikki Virtanen; Topi Uusitalo; Mircea Guina
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Dual-mode DFB laser diodes with apodized surface gratings

Optics Express
2018-06 | Journal article | Author
DOI: 10.1364/OE.26.016303
SOURCE-WORK-ID:

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EID:

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Contributors: Topi Uusitalo; Heikki Virtanen; Jukka Viheriälä; Mihail Dumitrescu
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Tampere University

High-Power 1.5 um DBR Laser Diodes for LIDAR Applications

Optics and photonics Days 2018, Jyväskylä, Finland, 28/05/18
2018-05-28 | Conference abstract | Author
SOURCE-WORK-ID:

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Contributors: Antti Aho; Jukka Viheriälä; Heikki Virtanen; Sanna Ranta; Mihail Dumitrescu; Mircea Guina
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Tampere University

GaSb superluminescent diodes with broadband emission at 2.55 μ m

Applied Physics Letters
2018-01 | Journal article | Author
DOI: 10.1063/1.5015974
SOURCE-WORK-ID:

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EID:

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Contributors: Nouman Zia; Jukka Viheriälä; Eero Sakari Koivusalo; Heikki Virtanen; Antti Aho; Soile Talmila; Mircea Guina
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Tampere University

High-Power 1550 nm DBR Laser Diodes for LIDAR Applications

Photonics West 2018, 27/01/18
2018-01-27 | Conference abstract | Author
SOURCE-WORK-ID:

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Contributors: Jukka Viheriälä; Antti Aho; Heikki Virtanen; Mihail Dumitrescu; Mircea Guina
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Tampere University

Narrow-Linewidth 780-nm DFB Lasers Fabricated Using Nanoimprint Lithography

IEEE Photonics Technology Letters
2018-01-01 | Journal article
DOI: 10.1109/LPT.2017.2772337
Contributors: Heikki Virtanen; Topi Uusitalo; Maija Karjalainen; Sanna Ranta; Jukka Viheriala; Mihail Dumitrescu
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1180 nm GaInNAs quantum well based high power DBR laser diodes

SPIE Photonics West 2017, San Francisco, United States, 28/01/17
2017 | Conference abstract | Author
SOURCE-WORK-ID:

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EID:

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Contributors: Jukka Viheriälä; Antti Aho; Heikki Virtanen; Mihail Dumitrescu; Mircea Guina
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Tampere University

High-power 1550 nm tapered DBR laser diodes for LIDAR applications

CLEO/Europe-EQEC 2017, Munich, Germany, 25/06/17
2017 | Conference abstract | Author
DOI: 10.1109/CLEOE-EQEC.2017.8086373
SOURCE-WORK-ID:

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EID:

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Contributors: Antti Aho; Jukka Viheriälä; Jaakko Mäkelä; Heikki Virtanen; Sanna Ranta; Mihail Dumitrescu; Mircea Guina
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Tampere University

Performance and lifetime of high-power narrow-linewidth 1180 nm GaInNAs DBR-LDs

CLEO/Europe-EQEC 2017, Munich, Germany, 25/06/17
2017 | Conference abstract | Author
DOI: 10.1109/CLEOE-EQEC.2017.8086374
SOURCE-WORK-ID:

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EID:

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Contributors: Jukka Viheriälä; Antti Aho; Heikki Virtanen; Mervi Koskinen; Mircea Guina
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Tampere University

High-Power 1180-nm GaInNAs DBR Laser Diodes

IEEE Photonics Technology Letters
2017-12-01 | Journal article
DOI: 10.1109/LPT.2017.2760038
Contributors: Antti T. Aho; Jukka Viheriala; Ville-Markus Korpijarvi; Mervi Koskinen; Heikki Virtanen; Mathias Christensen; Topi Uusitalo; Kimmo Lahtonen; Mika Valden; Mircea Guina
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Narrow-Linewidth DFB and DBR Lasers with Surface Gratings Fabricated Using UV-Nanoimprint Lithography

Tampere University of Technology. Publication
2017-11-24 | Dissertation or Thesis | Author
SOURCE-WORK-ID:

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ISBN: 978-952-15-4071-4
ISBN: 978-952-15-4048-6
Contributors: Heikki Virtanen
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Tampere University

Distributed feedback lasers with alternating laterally coupled ridge-waveguide surface gratings

Optics Letters
2017-08-15 | Journal article | Author
DOI: 10.1364/OL.42.003141
SOURCE-WORK-ID:

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EID:

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Contributors: Topi Uusitalo; Heikki Virtanen; Maija Karjalainen; Sanna Ranta; Jukka Viheriälä; Mihail Dumitrescu
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Tampere University

Transverse structure optimization of distributed feedback and distributed Bragg reflector lasers with surface gratings

Optical and Quantum Electronics
2017-06 | Journal article | Author
DOI: 10.1007/s11082-017-1039-y
SOURCE-WORK-ID:

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EID:

2-s2.0-85019174454
Contributors: Topi Uusitalo; Heikki Virtanen; Mihail Dumitrescu
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Tampere University

Simulation studies of DFB laser longitudinal structures for narrow linewidth emission

Optical and Quantum Electronics
2017-04 | Journal article
DOI: 10.1007/s11082-017-0993-8
Contributors: Heikki Virtanen; Topi Uusitalo; Mihail Dumitrescu
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1180 nm GaInNAs quantum well based high power DBR laser diodes

High-Power Diode Laser Technology XV
2017-02-24 | Conference paper | Author
DOI: 10.1117/12.2251317
SOURCE-WORK-ID:

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Contributors: Jukka Viheriälä; Antti Aho; Heikki Virtanen; Mervi Koskinen; Mihail Dumitrescu; Mircea Guina
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Tampere University

Analysis of the photon–photon resonance influence on the direct modulation bandwidth of dual-longitudinal-mode distributed feedback lasers

Optical and Quantum Electronics
2017-01-05 | Journal article | Author
DOI: 10.1007/s11082-016-0871-9
SOURCE-WORK-ID:

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EID:

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Contributors: Topi Uusitalo; Heikki Virtanen; Paolo Bardella; Mihail Dumitrescu
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Tampere University

Spectral Characteristics of Narrow-Linewidth High-Power 1180 nm DBR Laser With Surface Gratings

IEEE Photonics Technology Letters
2017-01-01 | Journal article
DOI: 10.1109/LPT.2016.2629512
Contributors: Heikki Virtanen; Antti T. Aho; Jukka Viheriala; Ville-Markus Korpijarvi; Topi Uusitalo; Mervi Koskinen; Mihail Dumitrescu; Mircea Guina
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1550 nm high-power tapered DBR-laser diodes

2016 International Conference Laser Optics, LO 2016, St. Petersburg, Russian Federation, 27/06/16
2016 | Conference abstract | Author
DOI: 10.1109/LO.2016.7550029
SOURCE-WORK-ID:

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EID:

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Contributors: Antti Aho; Jukka Petteri Viheriälä; Jaakko Matti Mäkelä; Heikki Virtanen; Sanna Ranta; Mihail Dumitrescu; Mircea Guina
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Tampere University

Difference Frequency Modulation in Dual-Mode Multi-Section DFB Lasers

Advanced Photonics 2016 (IPR, NOMA, Sensors, Networks, SPPCom, SOF)
2016 | Conference paper | Author
DOI: 10.1364/IPRSN.2016.IW2A.7
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EID:

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Part of ISBN: 978-1-943580-14-9
Contributors: Topi Uusitalo; Heikki Virtanen; Jukka Viheriälä; Joel Salmi; Antti Aho; Mihail Dumitrescu
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Tampere University

High-power 1550 nm tapered DBR lasers fabricated using soft UV-nanoimprint lithography

High-Power Diode Laser Technology and Applications XIV
2016 | Conference paper | Author
DOI: 10.1117/12.2207423
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Part of ISBN: 9781628419689
Contributors: Jukka Viheriälä; Antti Aho; Jaakko Mäkelä; Joel Salmi; Heikki Virtanen; Tomi Leinonen; Mihail Dumitrescu; Mircea Guina
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Tampere University

Simulation of photon-photon resonance enhanced direct modulation bandwidth of DFB lasers

16th International Conference on Numerical Simulation of Optoelectronic Devices, NUSOD 2016
2016-08-17 | Conference paper | Author
DOI: 10.1109/NUSOD.2016.7547075
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EID:

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Part of ISBN: 978-1-4673-8603-6
Contributors: M. Dumitrescu; Topi Uusitalo; Heikki Virtanen; A. Laakso; P. Bardella; I. Montrosset
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Tampere University

Simulation studies of DFB laser longitudinal structures for narrow linewidth emission

16th International Conference on Numerical Simulation of Optoelectronic Devices, NUSOD 2016
2016-08-17 | Conference paper | Author
DOI: 10.1109/NUSOD.2016.7547078
SOURCE-WORK-ID:

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EID:

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Part of ISBN: 9781467386036
Contributors: Heikki Virtanen; Topi Uusitalo; Mihail Dumitrescu
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Tampere University

Transverse structure optimization of laterally-coupled ridge waveguide DFB lasers

16th International Conference on Numerical Simulation of Optoelectronic Devices, NUSOD 2016
2016-08-17 | Conference paper | Author
DOI: 10.1109/NUSOD.2016.7547038
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EID:

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Part of ISBN: 9781467386036
Contributors: Topi Uusitalo; Heikki Virtanen; Mihail Dumitrescu
Source: check_circle
Tampere University

High-Power Tapered Distributed Bragg Reflector Laser Diodes Emitting at 1550 nm

Optics and Photonics days, Tampere, Finland, 16/05/16
2016-05-18 | Conference abstract | Author
SOURCE-WORK-ID:

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Contributors: Antti Aho; Jukka Petteri Viheriälä; Jaakko Matti Mäkelä; Heikki Virtanen; Sanna Ranta; Mihail Dumitrescu; Mircea Guina
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Tampere University

Difference frequency modulation of multi-section dual-mode lasers with nanoscale surface gratings

SPIE Proceedings
2016-03-07 | Conference paper | Author
DOI: 10.1117/12.2213888
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Contributors: Topi Uusitalo; Heikki Virtanen; Jukka Viheriälä; Joel Salmi; Antti Aho; Mihail Dumitrescu
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Tampere University

Dual-Mode Multi-Section Lasers with Nanoscale Surface Gratings

Lasers and Electro-Optics Pacific Rim (CLEO-PR), 2015 11th Conference on
2015-08 | Conference paper | Author
DOI: 10.1109/CLEOPR.2015.7376054
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EID:

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Part of ISBN: 978-1-4673-7109-4
Contributors: M. Dumitrescu; Topi Uusitalo; Heikki Virtanen; J. Viheriälä; J. Salmi; Antti Aho
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Tampere University

Dual-Mode Behavior in Multi-Section DFB Semiconductor Lasers with Laterally-Coupled Ridge-Waveguide Surface Gratings

The European Conference on Lasers and Electro-Optics 2015
2015-06 | Conference paper | Author
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EID:

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Part of ISBN: 978-1-4673-7475-0
Contributors: Topi Uusitalo; Heikki Virtanen; Jukka Viheriälä; Joel Olavi Salmi; Antti Aho; Mihail Dumitrescu
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Tampere University

Optimization of High-Power Narrow-Linewidth Lasers for Space Applications

Northern Optics & Photonics 2015, 1.-4.6.2015, Saimaa, Finland
2015-06 | Conference paper | Author
SOURCE-WORK-ID:

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Part of ISBN: 978-952-61-1751-5
Contributors: Heikki Virtanen; Topi Uusitalo; Mihail Dumitrescu
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Tampere University

High-power 1550 nm tapered DBR lasers fabricated using soft UV-nanoimprint lithography

2015-06-21 | Conference abstract | Author
SOURCE-WORK-ID:

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EID:

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Contributors: J. Viheriälä; J. Mäkelä; Antti Aho; Heikki Virtanen; T. Leinonen; M. Dumitrescu; Mircea Guina
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Tampere University

Peer review (1 review for 1 publication/grant)

Review activity for APL photonics. (1)
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