![\"Optical-Quartz-Glass1-2-300x300](\"https:\/\/www.sic-wafers.com\/wp-content\/uploads\/2025\/12\/Optical-Quartz-Glass1-2-300x300.webp\" "\\"\\"")
![\"Optical-Quartz-Glass2-1-300x300](\"https:\/\/www.sic-wafers.com\/wp-content\/uploads\/2025\/12\/Optical-Quartz-Glass2-1-300x300.webp\" "\\"\\"")
![\"Optical-Quartz-Glass3-1-300x300](\"https:\/\/www.sic-wafers.com\/wp-content\/uploads\/2025\/12\/Optical-Quartz-Glass3-1-300x300.webp\" "\\"\\"")
<\/p>\n
Key Features<\/h2>\n\n- Wide optical transmission from deep UV to infrared<\/strong><\/li>\n
- Extremely low thermal expansion and high thermal shock resistance<\/li>\n
- Superior chemical and corrosion resistance<\/li>\n
- High mechanical strength and surface quality<\/li>\n
- Compatible with AR, reflective, and interference coatings<\/li>\n
- Available in windows, lenses, prisms, flats, and custom geometries<\/li>\n<\/ul>\n
Optical Quartz Glass Grades Comparison<\/h2>\n
\n\n\nGrade<\/th>\n JGS1<\/th>\n JGS2<\/th>\n JGS3<\/th>\n<\/tr>\n \nType<\/td>\n Far UV Optical Quartz<\/td>\n UV Optical Quartz<\/td>\n Infrared Optical Quartz<\/td>\n<\/tr>\n \nRaw Material<\/td>\n Synthetic SiCl\u2084<\/td>\n Natural quartz crystal<\/td>\n Natural quartz crystal<\/td>\n<\/tr>\n \nManufacturing<\/td>\n Oxyhydrogen flame fusion<\/td>\n Oxyhydrogen flame fusion<\/td>\n Vacuum electric fusion<\/td>\n<\/tr>\n \nOH Content<\/td>\n ~2000 ppm<\/td>\n 100\u2013200 ppm<\/td>\n Extremely low<\/td>\n<\/tr>\n \nMetal Impurities<\/td>\n Very low<\/td>\n Tens of ppm<\/td>\n Tens of ppm<\/td>\n<\/tr>\n \nInternal Structure<\/td>\n Bubble-free, no particles<\/td>\n Minor striations\/particles<\/td>\n Minor bubbles, striations<\/td>\n<\/tr>\n \nUV Transmission<\/td>\n \u226590% at 185 nm<\/td>\n Limited, cutoff ~220 nm<\/td>\n Low in deep UV<\/td>\n<\/tr>\n \nOH Absorption<\/td>\n Strong at 2730 nm<\/td>\n Moderate at 2730 nm<\/td>\n Minimal<\/td>\n<\/tr>\n \nTransmission Range<\/td>\n 185\u20132500 nm<\/td>\n 220\u20132500 nm<\/td>\n 260\u20133500 nm<\/td>\n<\/tr>\n \nInfrared Performance<\/td>\n Moderate<\/td>\n Moderate<\/td>\n Excellent<\/td>\n<\/tr>\n \nApplications<\/td>\n Deep UV optics, lasers, lithography<\/td>\n General UV & visible optics<\/td>\n IR optics, thermal imaging systems<\/td>\n<\/tr>\n \nCost<\/td>\n High<\/td>\n Medium<\/td>\n Medium\u2013High<\/td>\n<\/tr>\n \nComparable Materials<\/td>\n Suprasil 1\/2, Spectrosil A\/B, Corning 7980<\/td>\n Homosil 1\/2\/3, Dynasil series<\/td>\n Suprasil 300<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n![\"Spectrogram_JGS1_jgs2_jgs3](\"https:\/\/www.sic-wafers.com\/wp-content\/uploads\/2025\/12\/Spectrogram_JGS1_jgs2_jgs3.webp\" "\\"\\"")
<\/h2>\nJGS1 \u2013 Far UV Optical Quartz Glass<\/h2>\n
JGS1 is a synthetic fused silica produced from SiCl\u2084 using oxyhydrogen flame fusion. Its high OH content (~2000 ppm) ensures outstanding deep UV transmission, with \u226590% transmittance at 185 nm. It is bubble-free and highly homogeneous, making it ideal for critical UV optics.<\/p>\n
Applications:<\/strong><\/p>\n\n- Deep UV lasers<\/li>\n
- Semiconductor lithography optics<\/li>\n
- UV lenses, windows, prisms, mirrors<\/li>\n
- Analytical and inspection instruments<\/li>\n<\/ul>\n
JGS2 \u2013 UV Optical Quartz Glass<\/h2>\n
JGS2 is manufactured from natural quartz crystal using flame fusion. It contains 100\u2013200 ppm OH and minor metal impurities. Its transmission covers 220\u20132500 nm, with possible striations in larger dimensions. Cost-effective and versatile, it is widely used for general UV-visible optical applications.<\/p>\n
Applications:<\/strong><\/p>\n\n- Optical windows and viewports<\/li>\n
- Condenser optics and flats<\/li>\n
- Microscope slides<\/li>\n
- Sight glasses and high-temperature optical devices<\/li>\n<\/ul>\n
JGS3 \u2013 Infrared Optical Quartz Glass<\/h2>\n
JGS3 is produced by vacuum electric fusion from natural quartz. Almost OH-free, it offers superior IR transmission with minimal absorption. Minor bubbles or striations may exist, but it excels in applications requiring wide spectral coverage up to 3500 nm.<\/p>\n
Applications:<\/strong><\/p>\n\n- Infrared optical windows<\/li>\n
- IR sensors and detectors<\/li>\n
- Thermal imaging systems<\/li>\n
- Multi-spectral optical systems<\/li>\n<\/ul>\n
Available Forms<\/h2>\n\n- Windows, lenses, prisms, optical flats, and substrates<\/li>\n
- Filter substrates (bandpass, cutoff, ND, notch filters)<\/li>\n
- Custom optical components according to drawings<\/li>\n<\/ul>\n
Selection Guide<\/h2>\n\n- JGS1:<\/strong> Deep UV optics (<200 nm), high-performance UV lasers<\/li>\n
- JGS2:<\/strong> General UV-visible applications, cost-effective solution<\/li>\n
- JGS3:<\/strong> Infrared optics or systems requiring wide spectral coverage<\/li>\n<\/ul>\n
FAQ<\/h2>\n
Q1:<\/strong> Differences between JGS1, JGS2, JGS3?
\nA1:<\/strong> Raw material, OH content, impurities, internal structure, and spectral range.<\/p>\nQ2:<\/strong> Why is OH content important?
\nA2:<\/strong> High OH improves UV transmission but reduces IR performance due to absorption around 2730 nm.<\/p>\nQ3:<\/strong> Can quartz glass be coated?
\nA3:<\/strong> Yes, AR, reflective, or interference coatings can be applied.<\/p>\nQ4:<\/strong> Is optical quartz glass the same as normal glass?
\nA4:<\/strong> No. It has higher purity, lower thermal expansion, and superior UV\/IR transmission.<\/p>","protected":false},"excerpt":{"rendered":"Optical Quartz Glass, also known as fused silica, is a high-purity, isotropic form of SiO\u2082 with exceptional optical, thermal, and chemical stability.<\/p>","protected":false},"featured_media":1368,"comment_status":"open","ping_status":"closed","template":"","meta":{"_acf_changed":false},"product_brand":[],"product_cat":[48],"product_tag":[123,124,125,126,127,128,129,130,131,132,133],"class_list":["post-1274","product","type-product","status-publish","has-post-thumbnail","product_cat-quartz","product_tag-deep-uv","product_tag-fused-silica","product_tag-infrared-optics","product_tag-jgs1","product_tag-jgs2","product_tag-jgs3","product_tag-laser-optics","product_tag-optical-quartz-glass","product_tag-optical-windows","product_tag-semiconductor-lithography","product_tag-uv-optics","first","instock","shipping-taxable","product-type-simple"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.sapphire-glass.net\/en\/wp-json\/wp\/v2\/product\/1274","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.sapphire-glass.net\/en\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/www.sapphire-glass.net\/en\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/www.sapphire-glass.net\/en\/wp-json\/wp\/v2\/comments?post=1274"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.sapphire-glass.net\/en\/wp-json\/wp\/v2\/media\/1368"}],"wp:attachment":[{"href":"https:\/\/www.sapphire-glass.net\/en\/wp-json\/wp\/v2\/media?parent=1274"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/www.sapphire-glass.net\/en\/wp-json\/wp\/v2\/product_brand?post=1274"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/www.sapphire-glass.net\/en\/wp-json\/wp\/v2\/product_cat?post=1274"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/www.sapphire-glass.net\/en\/wp-json\/wp\/v2\/product_tag?post=1274"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
Optical Quartz Glass Grades Comparison<\/h2>\n
| Grade<\/th>\n | JGS1<\/th>\n | JGS2<\/th>\n | JGS3<\/th>\n<\/tr>\n |
|---|---|---|---|
| Type<\/td>\n | Far UV Optical Quartz<\/td>\n | UV Optical Quartz<\/td>\n | Infrared Optical Quartz<\/td>\n<\/tr>\n |
| Raw Material<\/td>\n | Synthetic SiCl\u2084<\/td>\n | Natural quartz crystal<\/td>\n | Natural quartz crystal<\/td>\n<\/tr>\n |
| Manufacturing<\/td>\n | Oxyhydrogen flame fusion<\/td>\n | Oxyhydrogen flame fusion<\/td>\n | Vacuum electric fusion<\/td>\n<\/tr>\n |
| OH Content<\/td>\n | ~2000 ppm<\/td>\n | 100\u2013200 ppm<\/td>\n | Extremely low<\/td>\n<\/tr>\n |
| Metal Impurities<\/td>\n | Very low<\/td>\n | Tens of ppm<\/td>\n | Tens of ppm<\/td>\n<\/tr>\n |
| Internal Structure<\/td>\n | Bubble-free, no particles<\/td>\n | Minor striations\/particles<\/td>\n | Minor bubbles, striations<\/td>\n<\/tr>\n |
| UV Transmission<\/td>\n | \u226590% at 185 nm<\/td>\n | Limited, cutoff ~220 nm<\/td>\n | Low in deep UV<\/td>\n<\/tr>\n |
| OH Absorption<\/td>\n | Strong at 2730 nm<\/td>\n | Moderate at 2730 nm<\/td>\n | Minimal<\/td>\n<\/tr>\n |
| Transmission Range<\/td>\n | 185\u20132500 nm<\/td>\n | 220\u20132500 nm<\/td>\n | 260\u20133500 nm<\/td>\n<\/tr>\n |
| Infrared Performance<\/td>\n | Moderate<\/td>\n | Moderate<\/td>\n | Excellent<\/td>\n<\/tr>\n |
| Applications<\/td>\n | Deep UV optics, lasers, lithography<\/td>\n | General UV & visible optics<\/td>\n | IR optics, thermal imaging systems<\/td>\n<\/tr>\n |
| Cost<\/td>\n | High<\/td>\n | Medium<\/td>\n | Medium\u2013High<\/td>\n<\/tr>\n |
| Comparable Materials<\/td>\n | Suprasil 1\/2, Spectrosil A\/B, Corning 7980<\/td>\n | Homosil 1\/2\/3, Dynasil series<\/td>\n | Suprasil 300<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
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