Optical Grade Quartz Wafers

Optical grade single crystal quartz exhibits exceptional optical and electrical properties. It is with extremely high purity and low impurity levels. The concentrations of Al, Na, Ca, Fe, and Li are significantly reduced.

Advantages of optical grade single crystal quartz include ultra-high purity, high laser resistance (maintaining high transmittance even in the vacuum ultraviolet region), no fluorescence, radiation resistance, and avilability of large dimensions. These characteristics make optical grade crystal quartz particularly suitable for demanding optical applications such as quartz waveplates, polarizers, prisms, various window materials, vacuum ultraviolet laser crystals, components in radiation environments, ArF excimer laser optical elements, and UV spectrometer prisms.

The Q value of this optical grade synthetic quartz can reach as high as 3.5 to 3.8 million, with no inclusions, etch channel densities (ECD), or defects. It is the preferred material for high-precision optical and electronic components, used in manufacturing ultra-stable, low-noise resonators/oscillators, SAW sensors, inertial navigation systems (accelerometers, gyroscopes), etc.

Hangzhou Freqcontrol Electronic Technology Ltd. (CQT Group) offer high-quality optical grade quartz single crystal bars. Dimensions X: 100mm, Y: 220mm, Z: 28mm. 

CQT Group can also process the crystal into wafers with various orientation cuts. The wafer diameters are normally, 2 inch, 3 inch and 4 inches.

Specifications for raw crystal material: High Q Quartz Bar

ZZ: 28mm minimum

XX: 78-100mm nominal

YY:220mm nominal

Alpha(α): <0.033(IEC 60758 GradeA)

Inclusions: <12/cm2(lEC 60758 Grade A)

ECD: <10 (IEC 60758 Grade 1)

Example of our material quality data:

Main single quartz substrate specifications