Ultrafast Optics Mirror

Ultrafast optical mirrors, through optimized film design, minimize group delay dispersion (GDD) to a minimum (GDD < 20 fs²), effectively addressing pulse broadening issues during femtosecond laser transmission. While maintaining broad-spectrum high reflectivity (>99.5%), the damage threshold reaches >2 J/cm². Suitable for applications where dispersion is a significant factor in femtosecond laser transmission, such as femtosecond Ti:sapphire lasers and two-photon microscopy. Product Features Low group delay dispersion (GDD) < 20 fs² ● Ideal for ultrashort pulses < 200 fs ● Multiple wavelengths available from UV to near-infrared (250-290nm/350-450nm/490-570nm/700-900nm/980-1140nm) ● Reflectivity greater than 99.5% ● Incident angles selectable: 0°, 45° ● Sizes selectable: Ø1/2 inch, Ø1 inch, Ø2 inch Reflectivity curve Technical Parameters Material JGS1 Diameter 25.4mm（1 Inch） 38.1mm（1.5 Inch） 50.8mm（2 Inch） Thickness 8mm Coating S1：（Optional） 250-290nm 350-450nm 490-570nm 700-900nm 980-1140nm Reflectance R>99.5% S2： Polished or Fine Ground Angle of Incidence：0° 、45°（Optional） Laser Damage Threshold >2J/cm2 、 100fs 、 10Hz@800nm Flatness λ/10@632.8nm Surface Quality 40/20 Other sizes and wavelengths can be customized. Applicable light sources: Femtosecond Ti:sapphire lasers, femtosecond Yb all-solid-state lasers, femtosecond fiber lasers, femtosecond optical parametric oscillators (OPOs), femtosecond optical parametric amplifiers (OPAs), and other femtosecond lasers.