HPFS® 8655 Fused Silica Optical Materials Product Information Specialty Materials Division

HPFS® 8655 Fused Silica Mechanical and Thermal Properties HPFS® 8655 fused silica is an extremely pure synthetic glass with very low water content which leads to an exceptionally stable and predictable dynamic behavior under deep ultraviolet (DUV) laser exposures. It is a compaction only material, showing no expansion, with a much greater resistance versus the well-known standard compaction curve resulting in the lowest possible induced wave front distortion. Unless otherwise stated, all values @ 25 °C Elastic (Young’s) Modulus 73 GPa Shear Modulus 31 GPa Modulus of Rupture, abraded 52.4 MPa...

Refractive Index and Dispersion Conditions: 22 ˚C, 760 mm Hg, N2 Wavelength [Vacuum] λ [nm] Thermal Coefficient2 ∆n/∆T [ppm/K] Sellmeier Dispersion Equation Constants1, 20 ˚C Sellmeier Dispersion Equation Constants1, 22 ˚C Sellmeier Dispersion Equation Constants1, 25 ˚C ∆n/∆T Dispersion Equation Constants2, 20-25 ˚C 1.980644E-04 Other Optical Properties Stress Coefficient ≤ 1 nm/cm, lower specifications available *1 Sellmeier Equation: n2-1 = A1 λ2/( λ2 - B1) + A2 λ2/( λ2 – B2) + A3 λ2/( λ2 – B3) + A4 λ2/( λ2 – B4) with λ in μm *2 ∆n/∆T Equation: ∆n/∆T [ppm/K] = D0 + D1λ2 + D2λ-2 + D3λ-4 + D4λ-6...

Worldwide Accessibility We are here to help you specify the best product for your application. For further information, please contact: North America Sales Office Corning Incorporated Semiconductor Optics Business 334 County Route 16 Canton, NY 13617 t: 315.379.3364 f: 315.379.3344 Asia Sales Offices Corning International K.K. Japan Akasaka Intercity, 7th Floor 1-11-44, Akasaka, Minato-ku, Tokyo 107-0052 Japan t: 81.3.3586.1052 f: 81.3.3587.0906 Corning Korea Company Ltd. 6th Floor, Gangnam Finance Center 737 Yeoksam-Dong Gangnam-Gu Seoul, Korea 135-984 t: 82.2.796.7500 f: 82.2.796.7300 China...