D420 Thk5mm fused silica window

Optical window is the basic optical elements in optical systems, in order to separate the inner and outside and isolated each other and then make a protection of inner components. There are many optical glasses for options such as K9, fused silica (JGS1, JGS2, JGS3), CaF2, Sapphire, MgF2, BaF2, Znse, ZnS, Silicon, Germanium upon customers demand.

Optical Window is the basic optical elements in optical systems, in order to separate the inner and outside and isolated each other and then make a protection of inner components. There are many optical glasses for options such as K9, fused silica (JGS1, JGS2, JGS3), CaF2, Sapphire, MgF2, BaF2, Znse, ZnS, Silicon, Germanium upon customers demand.

Fused Silica Window

CCRQ can supply JGS1, JGS2, JGS3, Corning 7979, 7980 etc. customized Fused Silica window and coating or not as choice.

Fused silica window has good temperature resistance characteristics, rapid high and low temperature, low spectral loss, UV IR wide spectral transmission, high precision and low expansion coefficient and so on, so it’s widely used on optical systems and equipment such as lasers, optical equipment, industrial, medical, lighting, semiconductor, communication, electronics, optical fiber etc.

JGS1 JGS2 JGS3 transmission curve

JGS1 has a good transmission band from 185-2500nm, on the wavelength 185nm, transmission can reach 90%, it has granule’s structure

JGS2 has good transmission band from 220-2500nm, it has striped and granular structure

JGS3 has good transmission band from 260-3500nm, transmission can reach 85%, but it has stripped and granule’s structure

So far, CCRQ make the biggest circular size fused silica window/JGS1 Window is Diameter 420mm, thickness 5mm plane window, surface quality 40/20, we have been sent to serval batches and make good feedback from Europe customers.

To be honest, such big size polishing process really have difficulties, we only handmade one by one to ensure the surface quality and flatness, accordingly customers demand we also make two surfaces AR coating on 1070nm, in the first order, we have a problem on the cracking and coating burst after done, for now we find the correct way to avoid these problems, we also have good material factory cooperations with better quality and best delivery time.

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