Optical Dielectric Mirrors

ical Dielectric Mirrors
*Mirrors are used to fold,bend and focus optical beams.They are usually processed into round,rectangle.Other shapes of mirror are available upon your request.

Selecting the proper mirror for your application requires making a number of choices. A few of the many considerations include: Reflectivity, Laser Damage Resistance, Coating Durability, Thermal Expansion of the substrate, Wavefront Distortion, Scattered Light, and certainly Cost.

Featured substrate materials: Pyrex is an excellent mirror substrate due to its low coefficient of thermal expansion and resistance to thermal shock. When high stability is critical, Zerodur is the best choice for its zero thermal expansion. UV Fused Silica has a thermal expansion coefficient lower than Pyrex, yet is more expensive. Because of its excellent transmissive properties, it is often reserved for transmissive mirrors as well as high-energy laser mirrors.

CZ Silicon is frequently used for laser mirrors because of its high thermal conductivity and low density.

*Dielectric Mirrors offer near total reflection, minimizing losses in nearly all optical systems. These coatings are very durable, easily cleaned, and resistant to laser damage.
Available either broadband or narrowband, they operate efficiently over 0–45°angle of incidence: AOI=0°, R>99.8%;
AOI=45°, R>99.5% (Rs>99.9%, Rp>99.2%).

*Specifications:
Material: N-BK7 ; UV Fused Silica ;other optical glass
Dimension Tolerance: +0.0, -0.1mm
Thickness Tolerance: ± 0.1mm
Surface quality: 60/40(Standard), 10/5(High Precision)
Clear Aperture: >85%
Flatness: λ/4 per 25mm@633nm
Parallelism: <1'
Bevel: <0.25mm X 45°
Coating: One surface(S1) :HR @ design wavelength
The other surface :uncoated

*Please feel free to contact with us.Your specific requirements will be satisfied in professional service.More information,please refer to http://www.dnd-optics.com