Photo of Teemu Alajoki

Teemu Alajoki

  • Phone+358407454058
20022018

Research output per year

If you made any changes in Pure these will be visible here soon.

Research Output

  • 24 Conference article in proceedings
  • 7 Article
  • 1 Conference article
  • 1 Master's thesis
2018

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
2 Citations (Scopus)
118 Downloads (Pure)
2017

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
6 Citations (Scopus)
2015

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

2 Citations (Scopus)
2014

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

2 Citations (Scopus)

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

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

6 Citations (Scopus)
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

2012

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. IEEE Institute of Electrical and Electronic Engineers, p. 1-6

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

5 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

6 Citations (Scopus)
2009

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. IEEE Institute of Electrical and Electronic Engineers, p. 1-6

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

6 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

12 Citations (Scopus)
2008

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

3 Citations (Scopus)
2007

Fiber-optic transceiver module for high-speed intrasatellite networks

Heikkinen, V., Alajoki, T., Juntunen, E., Karppinen, M., Kautio, K., Mäkinen, J-T., Ollila, J., Tanskanen, A., Toivonen, J., Casey, R., Scott, S., Pintzka, W., Theriault, S. & McKenzie, I., 2007, In : Journal of Lightwave Technology. 25, 5, p. 1213-1223

Research output: Contribution to journalArticleScientificpeer-review

27 Citations (Scopus)

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 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

2 Citations (Scopus)

Replicated polymer light guide interconnector with depth modified surface relief grating couplers

Siitonen, S., Pietarinen, J., Laakkonen, P., Jefimovs, K., Kuittinen, M., Alajoki, T., Mönkkönen, K., Pääkkönen, E. J. & Tervonen, A., 2007, In : Optical Review. 14, 5, p. 304-309

Research output: Contribution to journalArticleScientificpeer-review

7 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

3 Citations (Scopus)
2006

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

14 Citations (Scopus)

Optical modal gain in multiple quantum-well semiconductor lasers based on InP

Wartak, M. S., Weetman, P., Alajoki, T., Aikio, J., Heikkinen, V., Pikhtin, N. A. & Rusek, P., 2006, In : Canadian Journal of Physics. 84, 1, p. 53-66 14 p.

Research output: Contribution to journalArticleScientificpeer-review

5 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

36 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

7 Citations (Scopus)

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

2005

Model optical transmitters with a circuit simulator

Tanskanen, A., Alajoki, T. & Pekonen, O., 2005, In : Microwaves and RF. 44, 4, p. 92 - 97 6 p.

Research output: Contribution to journalArticleProfessional

Piirilevyn valoisa tulevaisuus

Karppinen, M., Alajoki, T., Tanskanen, A., Immonen, M. & Kivilahti, J., 2005, In : Prosessori. 11, p. 24-26

Research output: Contribution to journalArticleProfessional

Wavelength-tunable laser module using low-temperature cofired ceramic substrates

Heikkinen, V., Aikio, J., Alajoki, T., Kautio, K., Ollila, J. & Karioja, P., 2005, In : IEEE Transactions on Advanced Packaging. 28, 1, p. 121 - 127 7 p.

Research output: Contribution to journalArticleScientificpeer-review

4 Citations (Scopus)
2004

Compact wavelength-tunable laser modules

Heikkinen, V., Aikio, J., Alajoki, T., Karioja, P., Ollila, J., Rantanen, T. & Vanhatalo, K., 2004.

Research output: Contribution to conferenceConference articleProfessional

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

18 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

9 Citations (Scopus)

Single-mode tuning of a 1540-nm diode laser using a Fabry–Pérot interferometer

Heikkinen, V., Aikio, J., Alajoki, T., Hiltunen, J., Mattila, A-J., Ollila, J. & Karioja, P., 2004, In : IEEE Photonics Technology Letters. 16, 4, p. 1164 - 1166 3 p.

Research output: Contribution to journalArticleScientificpeer-review

12 Citations (Scopus)

VCSEL array based transmittter for optical interconnects: Master's thesis

Alajoki, T., 2004, Oulu: University of Oulu.

Research output: ThesisMaster's thesisTheses

2003

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. IEEE Institute of Electrical and Electronic Engineers, p. 81-82

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

1 Citation (Scopus)

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: Teknillinen korkeakoulu, 93

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

2002

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

9 Citations (Scopus)