Parameter|Value

JGS1 /JGS2/JGS3 fused silica

JGS1

Ultraviolet Grade Fused Silica

JGS2

Optical Fused Quartz

JGS3

Infrared Optical Quartz Glass

Maximum Size

<Φ200mm

<Φ300mm

<Φ200mm

Transmission Range (Medium transmission ratio)

0.17~2.10um (Tavg>90%)

0.26~2.10um (Tavg>85%)

0.185~3.50um (Tavg>85%)

OH- Content

1200 ppm

150 ppm

5 ppm

Fluorescence (ex 254nm)

Virtually Free

Strong v-b

Strong V-B

Impurity Content

5 ppm

20-40 ppm

40-50 ppm

Birefringence Constant

2-4 nm/cm

4-6 nm/cm

4-10 nm/cm

Melting Method

Synthetic CVD

Oxy-hydrogen melting

Electrical melting

Applications

Laser substrate: Window, lens, prism, mirror…

Semiconductor and high temperature window,

IR & UV

substrate