Thorlabs offers several types of ultrafast mirrors for use with femtosecond pulsed lasers. The Dispersion-Compensating Mirror Pair is specifically designed to correct for the phase distortions that occur when ultrashort pulses travel through an optical system. The Dual-Band Dielectric Mirror has a specialty coating that maximizes the reflectivity of the mirror at both 400 nm and 800 nm. Our low Group Delay Dispersion (GDD) mirrors are optimized for low dispersion and >99% reflectivity when used with Ti:Sapphire lasers. Finally, we offer Protected Silver Mirrors with >95% average reflectivity from 450 nm - 20 µm.