optical crystal 1mm 2mm sapphire ball lens

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Product Description

Overview

Sapphire shells for lamps, absorption cells, and filters of atomic (rubidium) frequency standards raise the characteristics of the devices: they diminish the rela-tive frequency change corresponding with the time of work and atmospheric pres-sure, decrease power consumption, and increase the mean time between failure of devices.

Due to their high thermal conductivity, sapphire shells allow withdrawal of heat from laser elements made of materials with low thermal conductivity. Transparent sapphire shells are able to protect Mo-heaters from oxidation or aggressive media.

Although there are lots substrates which are regarded as potential materials to replace Sapphire Substrate, it is still dominated in the substrates (for GaN LED growth) market, because of its reasonable price and relatively low mismatch.

Zhongju is capable of processing substrates according to customer needs. Currently, our sapphire substrate productions ranges from 2 to 12 inches with high quality and accurate orientation.

Table 1 Size of substrates

	2 inches Substrates	4 inches Substrates	6 inches Substrates
Diameter (mm)	50.9±0.1	100.1±0.1	150.1±0.1
Primary Flat Length (mm)	16±1	31±1	47.5±1

Table 2 Specification of substrates

Material	High purity Single Crystal Sapphire
Surface Orientation	C-plane ± 0.1°
Primary Flat Orientation	A-plane ± 0.5°
Broken edge length	≤3mm
Crack	0
Defect	No inclusion，twin，or boundary
Bubble and cloud	Dense bubbles, clouds, and scattered bubble marked and counted as defects by length
EPD	≤1000 pits/cm²

Product Categories : Sapphire Window > Sapphire Lens

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