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2inch sapphire wafers 50.8mm sapphire sustrate for Semiconductor windows

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Product description

Product Description

Optical windows are falt, plane parallel plates which are often used as protective barriers for electronic sensors or detectors from outside environments. When selecting windows, please consider materials, transmission, scattering, parallelism and resisitance to certain environment or mechanical properties of the substrate.

Sapphire Wafers

Sapphire Windows are manufactured from single crystal sapphire, making them ideal for demanding applications (such as laser systems) because of their extreme surface hardness, high thermal conductivity, high dielectric constant and resistance to common chemical acids and alkalis. Sapphire is the second hardest crystal next to diamonds and, because of their structural strength, sapphire windows can be made much thinner than other common dielectric windows with improved transmittance. Chemically, sapphire is single crystal aluminum oxide (Al2O3) and is useful in a transmission range from 0.2 - 5.5μm.

Sapphire wafer
Crystal Materials	99,996% of Al2O3,High Purity, Monocrystalline, Al2O3
Crystal quality	Inclusions, block marks, twins, Color, micro-bubbles and dispersal centers are non-existent
Diameter	2inch	3inch	4inch	5inch ～ 7inch
Diameter		50.8± 0.1mm	76.2±0.2mm	100±0.3mm	In accordance with the provisions of standard production
Thickness	430±15µm	550±15µm	650±20µm	In accordance with the provisions of standard production
		330±15µm	500±15µm		550±20µm
		250±15µm	430±15µm		500±20µm
Orientation	C- plane (0001) to M-plane (1-100) or A-plane(1 1-2 0) 0.2±0.1° /0.3±0.1°, R-plane (1-1 0 2), A-plane (1 1-2 0 ), M-plane(1-1 0 0), Any Orientation , Any angle
Primary flat length	16.0±0.8mm	22.0±1.0 mm	32.5±1.5 mm	In accordance with the provisions of standard production
TTV	≤10µm	≤15µm	≤20µm	≤30µm
LTV	≤10µm	≤15µm	≤20µm	≤30µm
TIR	≤10µm	≤15µm	≤20µm	≤30µm
BOW	≤10µm	≤15µm	≤20µm	≤30µm
Warp	≤10µm	≤15µm	≤20µm	≤30µm
Front Surface	Epi-Polished (Ra< 0.2nm)
Back Surface	Fine ground (Ra=0.5 to 1.2 µm), Epi-Polished (Ra< 0.2nm)

Shenyang Ebetter Optics Co., Ltd. offers standard and high precision optical windows in round,square, wedge shapes. We also support custom made optical windows in a variety of substrates, such as UV Fused silica, N-BK7, Germanium(Ge), Silicon(Si),Zinc Selenide(ZnSe). The high precision parallelism of 10 arc seconds, surface quality of 10/5 and flatness of λ/20.Single layer or multi-layer anti-reflection coatings are available.

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Company Introduction

Shenyang Ebetter Optics Co.,Ltd. is a professional manufacturer of precision optical components and optical lens, diffraction grating manufacture. Since the company was established, it has been committed to the research and production and sales. We can carry out the optical system design and production of related accessories,and moreover we have already got import and export rights. nowadays products have been sold to many countries and regions,and established long-term good relations of cooperation with the optical companies of United States,Canada,the European Union and other countries. We get a good reputation with quality products.

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2inch sapphire wafers 50.8mm sapphire sustrate for Semiconductor windows

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