The Extreme Light Infrastructure ERIC

International Day of Light

When: May 14th 2022 (2 pm – 7 pm)
Where: ELI Beamlines and HiLASE laser centres, Dolní Břežany

The International Day of Light is celebrated on May 16th each year, the anniversary of the first successful operation of the laser in 1960 by physicist and engineer Theodore Maiman. The International Day of Light was proclaimed at the General Conference of UNESCO in November 2017. The first celebration took place on May 16th, 2018. ELI Beamlines is proud to join this event again – this year on May 14th!


  • Lectures (in Czech only)
  • Site tours
  • Virtual reality, augmented reality in the model of P3 vacuum chamber, 3D physics simulations of laser experiments
  • Educational laser games
  • Indoor & outdoor interactive laser exhibits
  • Laser & Radiation Safety
  • Laser biathlon
  • Activities for children

A detailed program is available in Czech HERE.
Some parts of our program will be held in Czech only, but English-speaking visitors are also very welcome! We are preparing many light-based activities you can enjoy. Moreover, a guided tour of ELI Beamlines laser centre in English will take place from 2.30 pm to 3.15 pm. During this tour, you will be able to see ELI Beamlines high-power laser systems and receive a lot of information about ELI Beamlines technologies, research activities and a construction of the facility. Please register for this tour HERE. The accompanying program for children and adults is without registration.

Let’s remember the laser anniversary during the International Day of Light 2022 and celebrate the central role of light in science and culture and the importance of light-based technologies with us.

Official website:


Please note that this event is open to the public. Photographs and videos are taken of the event for reporting purposes and to promote the event on our website and social media. If you do not wish to be in these recordings, please contact our colleagues at the venue directly or do so by emailing the contact person listed below.


By bus l.331 or 333 from Kačerov (metro C) or l.341 from Nádraží Modřany to the bus stop Dolní Břežany, municipal office.
By car to Za Radnicí 835, Dolní Břežany – parking is available in the ELI Beamlines parking lot or in front of the HiLASE building.