Optida Co Ltd offers single wavelength high reflection coatings with better than 99.7% reflection at one or several narrow wavelength regions. They are relatively insensitive to small changes in angular incidence (5-10 deg), but large changes (e.g., 45 deg) significantly affect the performance.

Single wavelength HR coatings, optimized for other than normal incidence have slightly higher reflection for S polarization than P polarization, so target reflections for different polarizations should be known before designing the coating in order to get the optimal solution.

Optida Co Ltd manufactures single wavelength HR coatings using e-beam evaporation and this ensures high laser-induced damage treshold LIDT ≥ 12 J/cm2 (S on 1 test at 1064 nm with 3.4 ns pulses, using the requirements of ISO 11254-2).