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Teemu Alajoki

20022018
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Research Output 2002 2018

  • 24 Conference article in proceedings
  • 7 Article
  • 1 Conference article
  • 1 Master's thesis
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Conference article in proceedings
2018
38 Downloads (Pure)

Integrated multi-wavelength Mid-IR light source for gas sensing

Karioja, P., Alajoki, T., Cherchi, M., Ollila, J., Harjanne, M., Heinilehto, N., Suomalainen, S., Zia, N., Tuorila, H., Viheriälä, J., Guina, M., Buczynski, R., Kasztelanic, R., Salo, T., Virtanen, S., Kluczynski, P., Borgen, L., Ratajczyk, M. & Kalinowski, P., 2018, Next-Generation Spectroscopic Technologies XI. Druy, M. A., Barnett, S. M., Profeta, L. T. M., Crocombe, R. A. & Azad, A. K. (eds.). International Society for Optics and Photonics SPIE, 9 p. 106570A. (Proceedings of SPIE, Vol. 10657).

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

Open Access
File
Mid-infrared
Light sources
light sources
Sensing
Gases
2017
4 Citations (Scopus)

Multi-wavelength mid-IR light source for gas sensing

Karioja, P., Alajoki, T., Cherchi, M., Ollila, J., Harjanne, M., Heinilehto, N., Suomalainen, S., Viheriälä, J., Zia, N., Guina, M., Buczynski, R., Kasztelanic, R., Kujawa, I., Salo, T., Virtanen, S., Kluczynski, P., Sagberg, H., Ratajczyk, M. & Kalinowski, P., 1 Jan 2017, Photonic Instrumentation Engineering IV. Soskind, Y. G. & Olson, C. (eds.). International Society for Optics and Photonics SPIE, Vol. 10110. 9 p. 101100P. (Proceedings of SPIE, Vol. Vol. 10110).

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

Open Access
Mid-infrared
Light sources
light sources
Sensing
Gases
2015
2 Citations (Scopus)

Optical coupling structure made by imprinting between single-mode polymer waveguide and embedded VCSEL

Karppinen, M., Salminen, N., Korhonen, T., Alajoki, T., Petäjä, J., Bosman, E., Van Steenberge, G., Justice, J., Khan, U., Corbett, B. & Boersma, A., 2015, Optical Interconnects XV: 93680H. International Society for Optics and Photonics SPIE, (Proceedings of SPIE, Vol. 9368).

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

optical coupling
waveguides
polymers
chips
alignment
2014
2 Citations (Scopus)

Detection of low concentration formaldehyde gas by photonic crystal sensor fabricated by nanoimprint process in polymer material

Boersma, A., Van Ee, R. J., Stevens, R. S. A., Saalmink, M., Charlton, M. D. B., Pollard, M. E., Chen, R., Kontturi, V., Karioja, P. & Alajoki, T., 2014, Proceedings Optical Sensing and Detection III, volume 9141, 2014. International Society for Optics and Photonics SPIE, Vol. 9141. 91410F. (Proceedings of SPIE, Vol. 9141).

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

formaldehyde
low concentrations
photonics
refractivity
sensors

Large-area nano-photonic chemical sensors: FP7-PHOTOSENS project

Karioja, P., Hiltunen, J., Alajoki, T., Tuominen, J., Siitonen, S., Kontturi, V., Böhlen, K., Hauser, R., Charlton, M., Boersma, A., Lieberzeit, P., Felder, T., Eustace, D. & Haskal, E., 2014, European Optical Society Annual Meeting 2014 (EOSAM 2014). Vol. 1. p. 307-308

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

6 Citations (Scopus)

Towards large-area roll-to-roll printed nanophotonic sensors

Karioja, P., Hiltunen, J., Aikio, S., Alajoki, T., Tuominen, J., Hiltunen, M., Siitonen, S., Kontturi, V., Böhlen, K., Hauser, R., Charlton, M., Boersma, A., Lieberzeit, P., Felder, T., Eustace, D. & Haskal, E., 2014, Proceedings: SPIE 9141, Optical Sensing and Detection III, 91410D, 2014. Bellingham: International Society for Optics and Photonics SPIE, Vol. 9141. 12 p. (Proceedings of SPIE, Vol. 9141).

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

Nanophotonics
Nanoimprint lithography
Sensors
Polymers
Photonic crystals
2013

Hybrid in-mould integration

Alajoki, T., Koponen, M., Huttunen, A., Tuomikoski, M., Heikkinen, M., Keränen, A., Keränen, K., Mäkinen, J-T., Jaakola, T., Aikio, J. & Rönkä, K., 2013, 46th International Symposium on Microelectronics, IMAPS 2013. Curran Associates Inc., p. 188-193

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

Printed circuits
Oximeters
Surface mount technology
Organic light emitting diodes (OLED)
Labeling
2012
4 Citations (Scopus)

Hybrid in-mould integration for novel electrical and optical features in 3D plastic products

Alajoki, T., Koponen, M., Tuomikoski, M., Heikkinen, M., Keränen, A., Keränen, K., Mäkinen, J-T., Aikio, J. & Rönkä, K., 2012, 4th Electronics system integration technologies conference, ESTC 2012, 17 - 20 September 2012, Amsterdam. Institute of Electrical and Electronic Engineers IEEE, p. 1-6

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

Plastic products
Automobile electronic equipment
Electronic medical equipment
Printed circuits
Consumer electronics
4 Citations (Scopus)

Printed hybrid systems

Karioja, P., Mäkinen, J-T., Keränen, K., Aikio, J., Alajoki, T., Jaakola, T., Koponen, M., Keränen, A., Heikkinen, M., Tuomikoski, M., Suhonen, R., Hakalahti, L., Kopola, P., Hast, J., Liedert, R., Hiltunen, J., Masuda, N., Kemppainen, A., Rönkä, K. & Korhonen, R., 2012, Proceedings of SPIE: Nanosensors, Biosensors, and Info-Tech Sensors and Systems 2012. Varadan, V. K. (ed.). International Society for Optics and Photonics SPIE, 13 p. 83440G. (Proceedings of SPIE, Vol. 8344).

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

Hybrid systems
Electronic equipment
Injection molding
Polymers
Medical applications
2009
6 Citations (Scopus)

In-mould integration of electronics into mechanics and reliability of overmoulded electronic and optoelectronic components

Alajoki, T., Koponen, M., Juntunen, E., Petaja, J., Heikkinen, M., Ollila, J., Sitomaniemi, A., Kosonen, T., Aikio, J. & Makinen, J-T., 2009, European Microelectronics and Packaging Conference. Institute of Electrical and Electronic Engineers IEEE, p. 1-6

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

Injection molding
Optoelectronic devices
Mechanics
Electronic equipment
Printed circuits
12 Citations (Scopus)

Multi channel in-plane and out-of-plane couplers for optical printed circuit boards and optical backplanes

Schneider, M., Kuhner, T., Alajoki, T., Tanskanen, A. & Karppinen, M., 2009, 59th Electronic Components and Technology Conference. p. 1942-1947

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

Printed circuit boards
Transmitters
Microoptics
Optical interconnects
Glass fibers
2008
3 Citations (Scopus)

Adhesion of Flexible Printed Circuit Substrate to Overmoulded Polymer and Characterization of Overmoulded Electronic Components

Koponen, M., Alajoki, T., Kosonen, T., Petäjä, J., Heikkinen, M., Vuorinen, T. & Mäkinen, J-T., 2008, IMAPS Nordic Annual Conference Denmark 2008. IMAPS Nordic, p. 207-212

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientific

Printed circuits
Adhesion
Injection molding
Polymers
Substrates
2007

Integration of optical interconnects on circuit board

Karppinen, M., Alajoki, T., Karioja, P., Hendrickx, N., Van Steenberge, G., Van Daele, P., Van Erps, J., Debaes, C., Thienpont, H., Obi, S., Immonen, M., Kivilahti, J. & Glebov, A., 2007, 13th MicroOptics Conference, MOC'07. p. 94-97 4 p.

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

optical interconnects
circuit boards
waveguides
transmitter receivers
printed circuits
2 Citations (Scopus)

Optical coupling and optoelectronics integration studied on demonstrator for optical interconnects on board

Alajoki, T., Hendrickx, N., Van Erps, J., Obi, S., Park, S-H., Karppinen, M., Thienpont, H., Van Daele, P. & Karioja, P., 2007, 16th European Microelectronics and Packaging Conference and Exhibition 2007 : EMPC 2007. Curran Associates Inc., p. 258-261

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

3 Citations (Scopus)

Towards low cost coupling structures for short distance optical interconnections

Hendrickx, N., Van Erps, J., Alajoki, T., Destouches, N., Blanc, D., Franc, J., Karioja, P., Thienpont, H. & Van Daele, P., 2007, 16th European Microelectronics and Packaging Conference and Exhibition: EMPC 2007. Curran Associates Inc., p. 247-252 6 p.

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

printed circuits
circuit boards
light beams
manufacturing
fabrication
2006
13 Citations (Scopus)

LTCC toolbox for photonics integration

Karioja, P., Keränen, K., Karppinen, M., Kautio, K., Heikkinen, V., Lahti, M., Ollila, J., Mäkinen, J-T., Kataja, K., Tuominen, J., Jaakola, T., Park, S. H., Korhonen, P., Alajoki, T., Tanskanen, A., Lenkkeri, J. & Heilala, J., 2006, IMAPS/ACerS International Conference and Exhibition on Ceramic Interconnect and Ceramic Microsystems Technologies: CICMT. 12 p.

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

Photonics
Millimeter waves
Temperature
Substrates
Laser cooling
36 Citations (Scopus)

Parallel Optical Interconnect between Ceramic BGA Packages on FR4 Board using Embedded Waveguides and Passive Optical Alignments

Karppinen, M., Alajoki, T., Tanskanen, A., Kataja, K., Makinen, J-T., Kautio, K., Karioja, P., Immonen, M. & Kivilahti, J., 2006, 56th Electronic Components and Technology Conference 2006. p. 799-805

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

7 Citations (Scopus)

Parallel optical interconnect between surface-mounted devices on FR4 printed wiring board using embedded waveguides and passive optical alignments

Karppinen, M., Alajoki, T., Tanskanen, A., Kataja, K., Mäkinen, J-T., Karioja, P., Immonen, M. & Kivilahti, J., 2006, Micro-Optics, VCSELs, and Photonic Interconnects II: Fabrication, Packaging, and Integration. International Society for Optics and Photonics SPIE, 11 p. 618500. (Proceedings of SPIE, Vol. 6185).

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

optical interconnects
wiring
receivers
chips
alignment

SpaceFibre: High speed fibre optic links for future space flight missions

Toivonen, J., Heikkinen, V., Alajoki, T., Juntunen, E., Karppinen, M., Kautio, K., Mäkinen, J-T., Ollila, J., Tanskanen, A., Thériault, S., Casey, R., Pintzka, W. & McKenzie, I., 2006, Proceedings of ESA/CNES ICSO 2006. 7 p. (ESA Special Publication; No. 621).

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

2004
18 Citations (Scopus)

Embedded optical interconnect on printed wiring board

Karppinen, M., Mäkinen, J-T., Kataja, K., Tanskanen, A., Alajoki, T., Karioja, P., Immonen, M. & Kivilahti, J., 2004, Micro-Optics, VCSELs, and Photonic Interconnects. International Society for Optics and Photonics SPIE, p. 150-164 (Proceedings of SPIE, Vol. 5453).

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

9 Citations (Scopus)

Optical interconnect on printed wiring board

Karppinen, M., Mäkinen, J-T., Kataja, K., Tanskanen, A., Alajoki, T., Karioja, P., Immonen, M. & Kivilahti, J., 2004, Photonics Packaging and Integration IV. International Society for Optics and Photonics SPIE, p. 135-145 (Proceedings of SPIE, Vol. 5358).

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

2003
1 Citation (Scopus)

Mems packaging using precision machined LTCC substrates

Heikkinen, V., Aikio, J., Alajoki, T., Hiltunen, J., Antti-Jussi, M., Ollila, J. & Karioja, P., 2003, IEEE/LEOS International Conference on Optical MEMS. Institute of Electrical and Electronic Engineers IEEE, p. 81-82

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

Optical interconnects on printed wiring board

Karppinen, M., Mäkinen, J-T., Kataja, K., Tanskanen, A., Alajoki, T., Tuominen, J., Hiltunen, J., Keränen, K., Karioja, P., Immonen, M., Roos, R. & Kivilahti, J., 2003, Northern Optics. Noponen, E. (ed.). Espoo, 93

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientific

2002
9 Citations (Scopus)

Extremely short external cavity lasers: The use of wavelength tuning effects in near field sensing

Aikio, J., Kataja, K., Alajoki, T., Karioja, P. & Howe, D. G., 18 Jun 2002, Integrated Optics: Devices, Materials, and Technologies VI. San Jose: International Society for Optics and Photonics SPIE, p. 235-245 (Proceedings of SPIE, Vol. 4640).

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

laser cavities
near fields
tuning
wavelengths
lasers