Abstract: A rare earth containing glass nominally based on the ternary P2O5—WO3—Na2O-Ln2O3 compositional space, with WO3>30-65 mole %, Na2O 15-35 mole %, P2O5 5-65 mole %, Ln2O3 (Ln=one or more cations selected from lanthanum or any of the rare earth oxides) up to the limit of solubility; with optional additives, MoO3 being a preferred additive, that can be employed alone or in combination at levels up to 15 mole %.

Abstract: A glass comprising in mole percent based on oxide: SiO2 55-70 PbO 30-38 Na2O >0-4.5 K2O ?0-2.5 and essentially free of TiO2.

Abstract: Athermal optical components comprise cubic crystalline materials including silver chloride and cesium bromide, or comprise composites of at least two layers of different compositions wherein the total optical pathlength, nL, across said layers is essentially independent of temperature.

Abstract: A laser uses a rare-earth doped phosphate laser glass characterized by a particularly high rare-earth content to generate the highest possible output power/energy pulses. The laser glass is composed primarily of P2O5, Al2O3, and alkaline earth and alkali earth oxides, and possesses other properties such as physical and thermal properties that are compatible with melting and manufacturing methods. The laser glass can be used in high power and high energy laser systems where laser action is achieved in rod or slab shaped components as well as in waveguide or thin film structures prepared by structuring technologies such as sputtering, ion exchange, and/or direct writing with a femtosecond laser.

Abstract: The present invention generally relates to an interference filter including a glass substrate, useful in fiber optic systems.

Abstract: A rare earth containing glass nominally based on the ternary P2O5 —WO3—Na2O—Ln2O3 compositional space, with WO3>30-65 mole %, Na2O 15-35 mole %, P2O5 5-65 mole %, Ln2O3 (Ln=one or more cations selected from lanthanum or any of the rare earth oxides) up to the limit of solubility; with optional additives, MoO3 being a preferred additive, that can be employed alone or in combination at levels up to 15 mole %.

Abstract: A method for the low temperature joining of similar and/or different phosphate glass by mating at low temperature glass components by an aqueous solution containing phosphorus. In preferred embodiments, the phosphate glasses are polished, cleaned, and brought together with the phosphate-containing solution between the polished surfaces. Vacuum may be applied to assist in making the joint. The composite is optionally heat treated to increase strength, chemical durability, and optical performance. The bond thereby formed has low birefringence, is strong, and is virtually photonically invisible. The joints now make possible, for example, substrates for virtually no loss signal splitters and other high-end optical components at low cost. Large hybrid performs substrates composed of multiple glass components may be prepared and segmented, providing an inexpensive novel substrate for the photonics industry.

Abstract: A laser uses a rare-earth doped phosphate laser glass characterized by a particularly high rare-earth content to generate the highest possible output power/energy pulses. The laser glass is composed primarily of P2O5, Al2O3, and alkaline earth and alkali earth oxides, and possesses other properties such as physical and thermal properties that are compatible with melting and manufacturing methods. The laser glass can be used in high power and high energy laser systems where laser action is achieved in rod or slab shaped components as well as in waveguide or thin film structures prepared by structuring technologies such as sputtering, ion exchange, and/or direct writing with a femtosecond laser.

Abstract: A method for the low temperature joining of similar and/or different phosphate glass by mating at low temperature glass components by an aqueous solution containing phosphorus. In preferred embodiments, the phosphate glasses are polished, cleaned, and brought together with the phosphate-containing solution between the polished surfaces. Vacuum may be applied to assist in making the joint. The composite is optionally heat treated to increase strength, chemical durability, and optical performance. The bond thereby formed has low birefringence, is strong, and is virtually photonically invisible. The joints now make possible, for example, substrates for virtually no loss signal splitters and other high-end optical components at low cost. Large hybrid performs substrates composed of multiple glass components may be prepared and segmented, providing an inexpensive novel substrate for the photonics industry.

Abstract: Described are substrates for magnetic media which have excellent surface properties as prepared directly from a slot drawdown glass sheet forming process. The substrate blanks cut directly from the glass sheet, as drawn, require little or no surface treatment for use as substrates for magnetic media, particularly hard disk drives. Also described are methods for preparing such substrates and methods for preparing magnetic media therefrom. Further described are the substrates and magnetic media prepared by such processes.

Abstract: The present invention relates to a fiber optic system including a light source, a fiber optic transmission component, a receiver or transmitter of radiation, and an interference filter. The interference filter may include a glass substrate with at least two interference layers coated thereon. The glass substrate can include: Oxide Range P2O5 30-70 Al2O3  5-15 R′O  5-15 R′ = Mg, Ca, Sr, Ba, Zn, Pb R2O R = Li, Na, K 15-40 where the glass substrate has a coefficient of, thermal expansion of 130-210×10−7/° C. at 30° C. to 70° C.

Abstract: A glass comprising in mole percent based on oxide: 1 SiO2 55-70 PbO 30-38 Na2O  >0-4.5 K2O   0-2.5 and essentially free of TiO2.

Abstract: The present invention relates to a fiber optic system including a light source, a fiber optic transmission component, a receiver or transmitter of radiation, and an interference filter. The interference filter may include a glass substrate with at least two interference layers coated thereon.

Abstract: A Cu-doped/Fe-doped low expansion glass ceramic composition comprising:______________________________________ Wt. % ______________________________________ SiO.sub.2 50-65 Al.sub.2 O.sub.3 18-27 P.sub.2 O.sub.5 0-10 Li.sub.2 O 2-6 Na.sub.2 O 0-2 K.sub.2 O 0-2 B.sub.2 O.sub.3 0-1 MgO 0-4 ZnO 0-5 CaO 0-4 BaO 0-5 TiO.sub.2 1-3 ZrO.sub.3 1-3 As.sub.2 O.sub.3 0-1.5 Sb.sub.2 O.sub.3 0-1.5 CuO 0-3 Fe.sub.2 O.sub.3 0-1 ______________________________________wherein the total amount of SiO.sub.2, Al.sub.2 O.sub.3 and P.sub.2 O.sub.5 is 80-89 wt. %, and said glass ceramic contains as a dopant 0.1-3 wt. % CuO, 0.1-1 wt. % Fe.sub.2 O.sub.3 or a combined CuO+Fe.sub.2 O.sub.3 amount of 0.1-4 wt. %. The glass ceramic composition is suitable for use as a cladding material for solid laser energy storage mediums as well as for use in beam attenuators for measuring laser energy level and beam blocks or beam dumps used for absorbing excess or unused laser energy.

Abstract: In a high energy laser system utilizing phosphate laser glass components to mplify the laser beam, the laser system requires a generated laser beam having an emission bandwidth of less than 26 nm and the laser glass components consist essentially of (on an oxide composition basis):______________________________________ Mole % ______________________________________ P.sub.2 O.sub.5 50-75 Al.sub.2 O.sub.3 >0-10 K.sub.2 O >0-30 MgO 0-30 CaO 0-30 Li.sub.2 O 0-20 Na.sub.2 O 0-20 Rb.sub.2 O 0-20 Cs.sub.2 O 0-20 BeO 0-20 SrO 0-20 BaO 0-20 ZnO 0-20 PbO 0-20 B.sub.2 O.sub.3 0-10 Y.sub.2 O.sub.3 0-10 La.sub.2 O.sub.3 0-8 Ln.sub.2 O.sub.3 0.01-8 ______________________________________whereinthe sum of MgO and CaO is >0-30;the sum of Li.sub.2 O, Na.sub.2 O, Rb.sub.2 O, and Cs.sub.2 O is 0-20;the sum of BeO, SrO, BaO, ZnO, and PbO is 0-20;the sum of B.sub.2 O.sub.3 and Y.sub.2 O.sub.3 is 0-10; andLn.sub.2 O.sub.3 represents the sum of the oxides of active lasing lanthanides of atomic number 58-71.

Abstract: A Cu-doped/Fe-doped low expansion glass ceramic composition comprising:______________________________________ Wt. % ______________________________________ SiO.sub.2 50-65 Al.sub.2 O.sub.3 18-27 P.sub.2 O.sub.5 0-10 Li.sub.2 O 2-6 Na.sub.2 O 0-2 K.sub.2 O 0-2 B.sub.2 O.sub.3 0-1 MgO 0-4 ZnO 0-5 CaO 0-4 BaO 0-5 TiO.sub.2 1-3 ZrO.sub.2 1-3 As.sub.2 O.sub.3 0-1.5 Sb.sub.2 O.sub.3 0-1.5 CuO 0-3 Fe.sub.2 O.sub.3 0-1 ______________________________________wherein the total amount of SiO.sub.2, Al.sub.2 O.sub.3 and P.sub.2 O.sub.5 is 80-89 wt. %, and said glass ceramic contains as a dopant 0.1-3 wt. % CuO, 0.1-1 wt. % Fe.sub.2 O.sub.3 or a combined CuO+Fe.sub.2 O.sub.3 amount of 0.1-4 wt. %. The glass ceramic composition is suitable for use as a cladding material for solid laser energy storage mediums as well as for use in beam attenuators for measuring laser energy level and beam blocks or beam dumps used for absorbing excess or unused laser energy.

Abstract: A brown chemstrengthenable contrast enhancement, UV attenuated glass (e.g., for sunglasses) comprises, in weight percent,______________________________________ Oxide Wt. % ______________________________________ SiO.sub.2 40-72 B.sub.2 O.sub.3 0-13 Al.sub.2 O.sub.3 0.5-3 Li.sub.2 O 0-3 Na.sub.2 O 8-15 K.sub.2 O 1-10 TiO.sub.2 4.2-10.2 CeO.sub.2 0.5-3.5 Nd.sub.2 O.sub.3 5.0-16.5 Fe.sub.2 O.sub.3 2.5-4.0 CoO 0.00-0.02 NiO 0.06-0.33 ZnO 0.0-7.0 Er.sub.2 O.sub.3 0-2 Cr.sub.2 O.sub.3 0.0-0.2 V.sub.2 O.sub.5 0.0-0.2 CuO 0.00-0.10 MnO.sub.2 0.0-2.0 having the following properties: % T.sub.v,c (1.8 mm) 14-30 a -0.1 to +6.0 b +18.0 to +26.0 % T (380 nm; 1.8 mm) 0.0 % T (400 nm; 1.8 mm) .ltoreq.1.5 ______________________________________meeting the D.sub.6500 (1.8 mm) and Traffic Signal (1.8 mm) specifications of ANSI Z80.3-1986, and wherein the amount of Fe.sup.+2 in the glass is selected sufficiently low that said "a" and Traffic Signal properties are achieved.

Abstract: A glass consisting essentially of (on an oxide composition basis):______________________________________ Mole % ______________________________________ P.sub.2 O.sub.5 50-70 Al.sub.2 O.sub.3 4-13 Na.sub.2 O 10-35 La.sub.2 O.sub.3 0-6 Ln.sub.2 O.sub.3 >0-6 Sum R'O 0-20 (R' = Mg, Ca, Sr, Ba, Zn and Pb) Sum R.sub.2 O 0-18 (R = Li, K, Rb, Cs) ______________________________________wherein Ln.sub.2 O.sub.3 represents the sum of the oxides of active lasing lanthanides of atomic number 58-71.

Abstract: The invention relates to a glass consisting essentially of______________________________________ P.sub.2 O.sub.5 43-59 SiO.sub.2 0-9 Al.sub.2 O.sub.3 7-11 Li.sub.2 O 0-15 Na.sub.2 O 0-15 K.sub.2 O 0-15 MgO 0-15 CaO 0-0.5 BaO 0-7 ZnO 0-7 CeO.sub.2 0-0.5 CuO 7-21 V.sub.2 O.sub.5 0.07-0.7 Pr.sub.6 O.sub.11 0-1.5 Nd.sub.2 O.sub.3 0-1.5 Nb.sub.2 O.sub.5 0-3 B.sub.2 O.sub.3 0-3 Y.sub.2 O.sub.3 0-3 Cr.sub.2 O.sub.3 0-1 ______________________________________having a photopic transmission of at least 10% at full rated voltage and a color space of NVIS Green A or B. The glass is useful in the production of optical filters for use with light sources in order to render said sources compatible with night vision imaging systems.

Abstract: A colored, chemstrengthenable contrast enhancement, UV attenuated glass (e.g., for sunglasses) comprises, in weight percent,______________________________________ Oxide Wt. % ______________________________________ SiO.sub.2 40-72 B.sub.2 O.sub.3 0-13 Al.sub.2 O.sub.3 0.5-3 Li.sub.2 O 0-3 Na.sub.2 O 8-13 K.sub.2 O 1-10 TiO.sub.2 8.0-9.5 CeO.sub.2 2.6-3.5 Nd.sub.2 O.sub.3 5-17 Fe.sub.2 O.sub.3 1.40-2.10 CoO 0-0.07 NiO 0-0.4 CuO 0-0.5 Er.sub.2 O.sub.3 0-2 V.sub.2 O.sub.5 0-0.5 Cr.sub.2 O.sub.3 0-0.25 ______________________________________and has the following properties% T (2.0 mm) 400 nm: .ltoreq.2.2%% T (2.0 mm) 380 nm: 0.0%a: -1.0 to -7.5b: +1.0 to +10.0.