About me
I work as a Staff scientist in the Photonics laboratories in the Faculty of Engineering and Natural sciences. My core expertise is in fiber optical technologies and ultrashort pulse generation, modeling and measurement. I am also involved in Research Hub planning and Finnlight research infrastructure upkeep.
Responsibilities
- Research in photonics technologies
- Research Hub planning for Photonics laboratories
- Finnlight upkeep (www.finnlight.fi)
Fields of expertise
- Fiberoptics, fiber amplifiers & lasers, fiber splicing
- Ultrashort pulsed lasers measurement and modeling, e.g. FROG & autocorrelation
- Supercontinuum and optical coherence
- Coherent combining and high power lasers
Research unit
Latest publications
Addition of Ag2O in Er3+doped oxyfluorophosphate glass to allow the drawing of optical fibers
Shestopalova, I., Korri, J., Lemiere, A., Närhi, M., Gumenyuk, R., Boussard-Plédel, C., Troles, J. & Petit, L., 15 Dec 2023, In: Ceramics International. 49, 24, p. 41238-41247 10 p.Research output: Contribution to journal › Article › Scientific › peer-review
Amplifier similariton generation from a Yb-doped all-normal-dispersion fiber laser employing a hybrid-mode-locking technique
Liu, X., Närhi, M., Korobko, D. & Gumenyuk, R., 2022, Fiber Lasers XIX: Technology and Systems. Jauregui-Misas, C. & Supradeepa, V. R. (eds.). SPIE, Vol. 11981. 1198113. (Proceedings of SPIE - The International Society for Optical Engineering; vol. 11981).Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Scientific › peer-review
Amplifier similariton fiber laser with a hybrid-mode-locking technique
Liu, X., Närhi, M., Korobko, D. & Gumenyuk, R., Oct 2021, In: Optics Express. 29, 22, p. 34977-34985 9 p.Research output: Contribution to journal › Article › Scientific › peer-review
Design guidelines for ultrashort pulse generation by a Mamyshev regenerator
Närhi, M., Fedotov, A., Aksenova, K., Fiebrandt, J., Schönau, T., Gerecke, M. & Gumenyuk, R., 10 May 2021, In: Optics Express. 29, 10, p. 15699-15710 12 p.Research output: Contribution to journal › Article › Scientific › peer-review
Optimization of Mamyshev regenerator for ultrafast pulse generation
Närhi, M., Fedotov, A., Aksenova, K. & Gumenyuk, R., 2021, Fiber Lasers XVIII: Technology and Systems. Zervas, M. N. & Jauregui-Misas, C. (eds.). SPIE, 6 p. 1166518. (Proceedings of SPIE - The International Society for Optical Engineering; vol. 11665).Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Scientific › peer-review
Towards ultimate high-power scaling: Coherent beam combining of fiber lasers
Fathi, H., Närhi, M. & Gumenyuk, R., Dec 2021, In: Photonics. 8, 12, 566.Research output: Contribution to journal › Review Article › peer-review
Advanced multimodal laser imaging tool for urothelial carcinoma diagnosis (AMPLITUDE)
Kurilchik, S., Gacci, M., Cicchi, R., Pavone, F. S., Morselli, S., Serni, S., Chou, MH., Närhi, M., Rafailov, E., Stewart, N., Lennon, C. & Gumenyuk, R., 1 Mar 2020, In: JPhys Photonics. 2, 2, 021001.Research output: Contribution to journal › Article › Scientific › peer-review
Interferometric autocorrelation measurements of supercontinuum based on two-photon absorption
Toenger, S., Mäkitalo, R., Ahvenjärvi, J., Ryczkowski, P., Närhi, M., Dudley, J. M. & Genty, G., 2019, In: Journal of the Optical Society of America B: Optical Physics. 36, 5, p. 1320-1326 7 p.Research output: Contribution to journal › Article › Scientific › peer-review
Nanocluster Aerosol Emissions of a 3D Printer
Poikkimäki, M., Koljonen, V., Leskinen, N., Närhi, M., Kangasniemi, O., Kausiala, O. & Dal Maso, M., 7 Nov 2019, In: Environmental Science and Technology. 53, 23, p. 13618−13628 11 p.Research output: Contribution to journal › Article › Scientific › peer-review
Nanocluster aerosol emissions of a 3D printer: the effect of nozzle temperature and filament material
Poikkimäki, M., Koljonen, V., Närhi, M., Kangasniemi, O., Kausiala, O., Leskinen, N. & Dal Maso, M., 5 Mar 2019.Research output: Other conference contribution › Abstract › Scientific