Si Wafers

SOI Wafers

Glass Wafers

AIIIBV Compounds

Sapphire Wafers

Thin-film Coated Wafers

Sputtering Targets and Evaporation Materials

Chrome Mask Blanks

Packing Boxes

Optical Component

- Optical Lens

- Windows

Windows

Windows are optical glass normally with polished faces that are relatively parallel. They are used to protect laser output. Windows are often AR coated to minimize reflection. AR coated windows offer improved transmission when used in industrial displays or computer monitors. The high transmission makes them ideal for most industrial and laser protecting applications.

Brewster Windows

Brewster windows are windows designed for use at Brewster's angle (usually uncoated). This is the angle where only incident p-polarized light has 0% transmission loss. They are an economical option for coupling linearly polarized light into sealed optical systems and to select the polarization of light traveling in optical cavities.

Brewster's angle can be calculated using the following equation: Brewster's angle =Arctan(n_w/n_a)

Where n_w and n_a are the indices of refraction for the window and the ambient respectively. n_a is usually assumed to be 1 for air.

Specification

Materials	BK7, UVFS, FS, CaF2, MgF2, BaF2, ZnSe, ZnS, Ge, Si, Sapphire, Cleartran, Infrasil, Suprasil
Angle of Incidence	Brewster's Angle
Surface Figure	1/4 lambda at 633 nm of Both Surfaces
Surface Quality	20-10 or better of Both Surfaces
Dimensional Tolerance	(+) 0.0 to 0.01mm
Thickness Tolerance	(+/-) 0.01mm
Wedge	Brewster less than 10 seconds, Elliptical less than 3 minutes
Bevels	0.02" at 45 degree typical
Clear Aperture	Exceeds Central 85% of diameter

Square and Round Window

Specification

Material	BK7 Grade A optical glass
Dimensional Tolerance	(+) 0.0 to -0.2mm
Thickness Tolerance	(+/-) 0.2mm
Clear Aperture	>80%
Parallelism	1 arc minute for standard; 10 arc seconds for high precision.
Surface Quality	60/40 for standard; 20/10 for high precision
Wavefront Distortion	1 lambda for standard per 25mm@633nm; 1/10 lambda for precision per 25mm@633nm.
Chamfer	Protected <0.5mm x 45 degree
Coating	Uncoated, available

Fused Silica Windows

Specification

Material	BK7 Grade A optical glass
Dimensional Tolerance	(+) 0.0 to -0.2mm
Thickness Tolerance	(+/-) 0.2mm
Clear Aperture	>80%
Parallelism	1 arc minute for standard; 10 arc seconds for high precision.
Surface Quality	60/40 for standard; 20/10 for high precision
Wavefront Distortion	1 lambda for standard per 25mm@633nm; 1/10 lambda for precision per 25mm@633nm.
Chamfer	Protected <0.5mm x 45 degree
Coating	Uncoated, available