Complementary Si/SiO dispersive mirrors for 2-4 µm spectral range.

Complementary pair of dispersive multilayers operating in the 2-4 µm spectral range were designed and produced for the first time. The mirrors comprise layers of Si and SiO thin-film materials. The pair exhibits unparalleled reflectance exceeding 99.

Synthesis, fabrication and characterization of a highly-dispersive mirrors for the 2 µm spectral range.

We report a challenging design, fabrication and post-production characterization problem of a dispersive mirror supporting the spectral range from 2000 nm to 2200 nm and providing a group delay dispersion of -1000 fs. The absolute reflectance in the working range is over 99.95%.

Broadband beamsplitter for high intensity laser applications in the infra-red spectral range.

We report on design, production and characterization of an extremely broadband multilayer beamsplitter, covering wavelength range from 0.67 - 2.6 µm.

Stress compensation with antireflection coatings for ultrafast laser applications: from theory to practice.

Each complicated coating, in particular, a dispersive mirror consists of dozens of layers. Thin films layers have mechanical stresses. After summing up stresses from all layers, the resulting stress is high enough to bend even a relatively thick substrate.