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High-purity Synthetic Quartz Glass, ZCQ-H Series

High optical uniformity, no bubbles, weak absorption, as well as customizable size make it the optimal basic materials for viewing windows, lenses, prisms, substrates, and various structural components in various fields of infrared optics and intense lasers.

Type Bubbles and Inclusions Optic uniformity Hydroxyl content Residual strain Applications
The bubble grade is given
for every 100 cm3
DIN ISO 10110 Striae PV value ppm
(μg/g)		 nm/cm
ZCQ-H32 1/6x0.3 No striae
in functional direction		 -- ~20 < 10 IR applications, optical observation window
ZCQ-H33 1/2x0.01;
no bubbles or inclusions>0.01 (mm)		 No striae
in functional direction		 < 5x10-6 ~5 < 5 Full spectrum transmittance applications, pendulous reed with improved stability
ZCQ-H34 1/2x0.01;
no bubbles or inclusions>0.01 (mm)		 No striae
in functional direction		 < 2x10-6 ~1 < 5 High-power laser window, lens, reflecting mirror
ZCQ-H35 1/2x0.01;
no bubbles or inclusions>0.01 (mm)		 3D material
no striae
in all directions		 < 2x10-6 ~1 < 5 Hemispherical gyro, prisms, high precision elements, coated applications
Material Grade Bubbles and Inclusions Homogeneity OH-Content Residual Strain Application
The bubble grade is given
for every 100 cm3
DIN ISO 10110 Striae PV value ppm
(μg/g)		 nm/cm
ZCQ-H32 1/6x0.3 no striae
in functional direction		 -- ~20 < 10 IR applications, optical observation window
ZCQ-H33 1/2x0.01;
no bubbles or inclusions>0.01 mm		 no striae
in functional direction		 < 5x10-6 ~5 < 5 Full spectrum transmittance applications, pendulous reed with improved stability
ZCQ-H34 1/2x0.01;
no bubbles or inclusions>0.01 mm		 no striae
in functional direction		 < 2x10-6 ~1 < 5 High-power laser window, lens, reflecting mirror
ZCQ-H35 1/2x0.01;
no bubbles or inclusions>0.01 mm		 3D material
no striae
in all directions		 < 2x10-6 ~1 < 5 Hemispherical gyro, prisms, high precision elements, coated applications
Mechanical Properties
Mechanical Data ZCQ-H32 ZCQ-H34
Density (g/cm3) 2.203 2.201
Modulus of elasticity (MPa) 7.25x104 7.25x104
Poisson's ratio 0.17 0.17
Compressive strength (MPa) 1150 1150
Tensile strength (MPa) 50 50
Bending strength (MPa) 67 67
Mohs hardness 5.5~6.5 5.5~6.5
Micro hardness 8000~9000 8000~9000
Electrical Properties
Dielectric constant (ε) 0-106Hz 3x1010Hz
3.7 3.81
Dielectric strength in kV/cm 20°C 500°C
250-400 40-50
Dielectric loss angle (tg δ) 1KHz 1MHz-109Hz 3x1010Hz
< 5x10-4 < 1x10-4 < 4x10-4
Resistivity in Ω·cm 20°C 100°C 400°C
1x1018 1x1016 1x1010
Resistivity in Ω·cm 800°C 1000°C 1200°C
6.3x106 1x106 1.3x105

Transmittance Curve (ZCQ-H34 T: 10mm)

High-purity Synthetic Quartz Glass, ZCQ-H Series
Chemical Composition
Element Al Fe Ca Mg Ti Ni Mn Cu Li Na K Co B Total
ppm ~0.2 ~0.09 ~0.08 ~0.01 ~0.02 ~0.01 ~0.01 ~0.01 ~0.01 ~0.09 ~0.05 ~0.01 ~0.01 ~0.60
Related Quartz Products
Highly Purity Synthetic Fused Silica is available with 4 series