EKSMA Optics Triumphs Again: Wins LIDT Challenge for the Second Time! LIDT Challenge 2024

We are pleased to announce the winner of the Laser Induced Damage Threshold Challenge 2024, which is the highly reflective coated mirrors from EKSMA Optics!


This year, we tested laser mirrors with highly reflective coatings. Among all the anonymized samples tested in the ISO-certified LIDT laboratory at the HiLASE Centre, the sample with a value of 0.16 J/cm² performed the best.

We proudly presented the award to a representative of EKSMA Optics on June 5th during the Laser Innovative Technologies workshop of the Czech Optical Cluster. The workshop is organized in collaboration with us and the ELI Beamlines Facility.

Knowing the quality of optical components used in high-power laser systems is essential for the safe and reliable operation of these systems. The LIDT Challenge provides component manufacturers with a unique opportunity to verify the real-world performance of their elements using our cutting-edge PERLA laser system.

Mirror samples with a diameter of 2 inches and a highly reflective coating for a 0° angle of incidence were tested using the s-on-1 method according to ISO 21254-2:2011. The testing laser provided femtosecond pulses (1000 fs) at a wavelength of 257 nm in a Gaussian, p-polarized beam with a repetition rate of 1 kHz, a diameter of 0,5 mm in the plane of incidence, and a maximum fluence of 1.5 J/cm². The test was conducted in a standard atmosphere, i.e., at an atmospheric pressure of 101.3 kPa, an air temperature of 22°C, and a relative humidity of 30%, in a clean laboratory ISO class 6.

At the HiLASE Centre, we provide state-of-the-art testing of material and optical component resistance to laser radiation under controlled conditions in our ISO 9001-certified LIDT laboratory. To learn more about our LIDT services, contact us at solutions@hilase.cz.