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Institute for Single Crystals

National Academy of Sciences of Ukraine

61001, Ukraine, Kharkiv, 60 Nauky Ave., phone/fax: +38(057)340-86-19, e-mail: info@iscrystals.com

We offer

Product innovation

Sapphire Substrates for Micro- and Optoelectronics

Details

Materials and Products - Large-Size Sapphire Crystals


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Optical Square Sapphire Windows and Blanks

Optical square sapphire windows and blanks with size (10...350)x(10...500) mm2 and thickness to 40 mm


Specification
Size, mm(10...350)x(10...500), thickness to 40
Accuracy of preparation, mm
in diameter
in thickness

±0.05

±0.05
Blocks, twins, twin layers and cracks, inclusions that are visible in polarized lightNot allowed
Flatness≤ 2-3 λ at the length 25 mm (λ=633 nm)
Roughness of the polished surfaces (Ra), ÅFrom 2 to 100
Quality of the polished surfaces by MIL-0-13830AS/D - 80/50, 60/40, 40/20, 20/10
Transmission (%):
visible and IR spectral region (to 4,5 μm)
UV spectral region (0,2 μm)

85-87

70
Internal voltages, kg/mm2≤2
Crystallographic orientation

Our adress:


61001, Kharkov, 60 Lenin Ave.
phone:  +38(057)340-86-19,
fax:       +38(057)340-86-19,
e-mail:   info@iscrystals.com