Shanghai Dream Lasers Technology - DPSS Green, Blue & Red Lasers, Precision Optics and Crystals

Precision Optics

Introduce

Windows

BK7 Windows

Fused Silica Windows

CaF2 Windows

Sapphire Windows

Lenses

Prisms

Waveplates

Beamsplitters

Filters

Laser Optics

Coloured Optical Glass

IR Materials

Coating

Custom Optics

Windows

Windows are applied to isolate different physical environments while allowing light to pass. When selecting windows you should consider materials, transmission, scattering, wavefront distortion, parallelism and resistance to certain environment. Dream Lasers offers a wide range of different materials and different degree of precision windows. Special materials are available upon requirement.

Dream Lasers provides varieties of single layer or multilayer anti-reflecting coating on optical windows.

Material	Properties	Application
BK7	Transmission Range: 330-2100nm Refractive Index: 1.5164 @ 588nm	Good performance over visible and near IR spectrum for most application.
Fused silica	Transmission Range: 185-2500nm Refractive Index: 1.4858@308nm Low Thermal Expansion Coefficient: 0.54 x 10^-6K	Better performance from UV to IR spectrum. Also, it is the best choice for resistance thermal application.
Sapphire	Transmission Range: 180-4500nm Refractive Index: 1.755@1000nm Strong Hardness	Suit for scratch resistance application with better transmission over the wide range spectrum. It can be made much thinner.
Calcium Fluoride	Transmission Range: 170-7800nm Refractive Index: 1.399@ 5000nm Little Hygroscopic Susceptibility High Thermal Expansion Coefficient: 18.85 x 10-6K	It is applicable for wide rang spectrum, and it is particularly useful for excimer laser application.

	Please refer to the Material Chapter for more information about Anisotropic synthetic sapphire crystal (Al₂O₃).
	Please refer to Coating Chapter for more infomation of coating.
	Other sizes and coatings are available upon request.