Single Synthetic Crystal Quartz is grown by hydrothermal method in autoclaves. It has trigonal crystal structure with right-handed or left-handed modification. Quartz crystals have low stress birefringence and high refractive index homogeneity. The optical transmission range of crystal quartz is 0.15-4 microns. Due to its piezoelectric properties, low thermal expansion, good mechanical parameters and excellent optical characteristics.
This material is mostly grown along the C-axis. Quartz crystals with inclusion specifications of Ia and Ib grade(IEC) is available.
The technical formula of crystal quartz is SiO2 and it is composed of two elements, silicon and oxygen. In its amorphous form SiO2 is the major constituent in many rocks and sand. The crystalline form of SiO2 or quartz is relatively abundant in nature, but in the highly pure form required for the manufacture of quartz crystal units, the supply tends to be small.
Refractive indexs of cultured quartz:
|
λ
|
193.6
|
340.4
|
410.2
|
467.8
|
546.1
|
627.8
|
|
No
|
1.659990
|
1.567470
|
1.556502
|
1.551027
|
1.546174
|
1.542819
|
|
Ne
|
1.673430
|
1.577385
|
1.566031
|
1.560368
|
1.555350
|
1.551880
|
|
λ
|
706.5
|
766.5
|
844.7
|
1529.6
|
2058.2
|
|
|
No
|
1.540488
|
1.539071
|
1.537525
|
1.528000
|
1.519980
|
|
|
Ne
|
1.549472
|
1.548005
|
1.546400
|
1.536460
|
1.528140
|
|
PHOSCTECH can provide different dimension Quartz window, Quartz Rotator, Quartz waveplate, Quartz filter，Quartz Prism.
Capability:
|
Attribute
|
Commercial
|
High Precision
|
|
Typical Diameter Φ(mm)
|
2, 6, 10, 12.7, 20, 25.4, 38, 50, 80, 100
|
|
Typical Thickness
|
0.5mm, 2mm, 5mm, 8mm, 20mm
|
|
Oriential Tolerance
|
Z-cut, +/- 6’
|
Z-cut, +/- 6’
|
|
Dimension Tolerance
|
± 0.1mm
|
± 0.05mm
|
|
Surface Quality
|
60-40 scratch and dig
|
10-5 scratch and dig
|
|
Wavefront Distortion
|
λ/2
|
λ/10
|
|
Parallelism
|
10"
|
0.5"
|
Note: Other sizes and coating are available upon request.
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Quartz Crystal