Its structure is optimized to minimize group velocity dispersion (GVD) and related dispersion effects, which is essential for maintaining the temporal profile of ultrashort UV pulses. By limiting pulse stretching and distortion, it supports stable and accurate performance in ultrafast laser systems.

In addition, the mirror is engineered with very low absorption to reduce heat generation, a key factor in preventing optical damage. This low absorption enhances energy efficiency while minimizing thermal stress, resulting in improved stability, long service life, and dependable operation in high-intensity and demanding UV laser environments.