Department of Applied Physics

Optics and Photonics

The research of the Optics and Photonics group covers a range of topics of modern optics and photonics, encompassing various aspects of light-matter interaction, optical coherence and polarization, development of methods to manipulate light with nano- and micro-structures, design and construction of novel light sources, optical metamaterials and optical imaging.


The work includes both theoretical and experimental studies and is carried out in close collaboration with local, national and international research partners. It is funded mostly by the Academy of Finland, private foundations, and direct contracts from industry. The group’s premises are in Micronova, the national micro- and nano-technology center of Finland.

Group Leader Matti Kaivola

Group leader

Professor Matti Kaivola 


Open Positions in Optics and Photonics

Open positions in Optics and Photonics

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Laboratory Facilities


Inverted microscope Nikon Eclipse TE2000-U

  • Brightfield, phase contrast and fluorescence capabilities
  • Piezo transducer for the stage with 1 nm step

Polarizing microscope MT9930, MEIJI TECHNO CO.

  • Rotatable stage, full polarization analysis
  • Color video camera INFINITY 2, Lumenera Co.

SpectraPro-2500i monochromator/spectrograph, Princeton Instruments/Acton

  • Operating range 185 nm – 1400 nm
  • Resolution ~0.1 nm
  • Includes PIXIS 400 camera (thermoelectric + liquid cooling), 350 nm – 1050 nm

Spectrometer Jobin Yvon (U1000) Raman, HORIBA

  • Operation range UV-NIR
  • Resolution ~0.01 nm

Ocean Optics spectrometers, fiber-coupled

  • HR4000, operation range 200 nm -1100 nm
  • USB2000+, operation range 200 nm -1100 nm
  • Fiber-coupled light source DH-2000-BAL, 200 nm -1500 nm

CW laser Millenia Xs, Spectra-Physics

  • Wavelength 532 nm
  • TEM00 transverse mode
  • Output power 10 W

CW laser Verdi, Coherent

  • Wavelength 532 nm
  • Single longitudinal mode (linewidth < 5 MHz)
  • Output power 18 W

Mode-locked Ti:sapphire laser Tsunami, Spectra-Physics

  • Wavelength 790 nm
  • Pumped with Millenia or Verdi
  • Pulse duration ~100 fs
  • Average power ~1 W
  • Peak power ~50 kW

Amplified fs-pulsed laser system

  • Coherent Astrella Ti:sapphire oscillator and regenerative amplifier
    • Central wavelength 800 nm
    • Pulse duration < 35 fs
    • Gaussian beam, M2 < 1.3
    • Pulse energy > 6 mJ at 1 kHz repetition rate
  • TOPAS-Prime Optical Parametric Amplifier, Light Conversion
    • Tunable across 290 nm – 1150 nm
    • Pulse duration < 50 fs
    • Pulse energies: ~ 100 mJ at 480 nm – 1150 nm; > 15 mJ at 290 nm – 480 nm.

CW solid-state laser, 403 nm, CrystaLaser

  • Wavelength 403 nm
  • Single longitudinal mode (~0.01 nm width, ~1 cm coherence length)
  • Output power 40 mW

CW He-Ne lasers, Melles Griot

  • Wavelength 633 nm
  • TEM00 transverse mode
  • Output power ~1 mW

Optical interferometers for characterizing surface movements and vibrations

  • Lateral resolution < 1 mm
  • Minimum detectable vibration amplitude < 1 pm
  • Frequency range from static surfaces up to 6 GHz

Latest publications

Extended depth of field of an imaging system with an annular aperture

Panu Hilden, Andriy Shevchenko 2023 Optics Express

Nonlinear nonlocal metasurfaces

Radoslaw Kolkowski, Tommi Hakala, Andriy Shevchenko, Mikko Huttunen 2023 Applied Physics Letters

Monitoring the gold nanoshell growth mechanism: stabilizing and destabilizing effects of PEG-SH molecules

Marta Gordel-Wójcik, Katarzyna Piela, Radosław Kołkowski 2022 Physical chemistry chemical physics : PCCP

Multifrequency Bessel beams with adjustable group velocity and longitudinal acceleration in free space

P. Hildén, E. Ilina, M. Kaivola, A. Shevchenko 2022 New Journal of Physics

Prism-based approach to create intensity-interferometric non-diffractive cw light sheets

Panu Hildén, Matti Kaivola, Andriy Shevchenko 2022 Optics Express

A Panda fiber temperature sensor up to 900°C

A. Hokkanen, A. Salmi, V. Vashistha, M. Nyman, S. K. Nielsen, T. Jensen, M. Jessen, B. Wälchli, M. Kapulainen, V. Naulin, T. Tala, T. Aalto 2022 Journal of Instrumentation

Continuous wave Bessel beams with a strong longitudinal acceleration in free space

Elena Ilina, Panu Hildén, Matti Kaivola, Andriy Shevchenko 2022 Optics Letters

Mode Interference Effect in Optical Emission of Quantum Dots in Photonic Crystal Cavities

A. Lyasota, C. Jarlov, M. Nyman, A. Miranda, M. Calic, B. Dwir, A. Rudra, A. Shevchenko, E. Kapon 2022 Physical Review X

Crosstalk Reduction between Closely Spaced Optical Waveguides by Using Higher-Order Modes

Somendu Maurya, Radoslaw Kolkowski, Matti Kaivola, Andriy Shevchenko 2022 Physical Review Applied

Wavelength dependence of plasma-based THz generation in liquids

Evgeniia A. Ponomareva 2022 IRMMW-THz 2022 - 47th International Conference on Infrared, Millimeter and Terahertz Waves
More information on our research in the Research database.
Research database
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