Peter F. Bordui - Menlo Park CA Gabriel M. Loiacono - Franklin Lakes NJ
Assignee:
U.S. Philips Corporation - New York NY
International Classification:
C30B 904 C30B 1500
US Classification:
156621
Abstract:
Large flow-free crystals of KiTiOPO. sub. 4 and the Rb, Tl, and As analogs are produced by preparing a melt of KtiOPO. sub. 4 or its analog in a flux in which the ratio by weight of KTiOPO. sub. 4 to the flux at the seeding temperature is equal to the saturation value of the KTiOPO. sub. 4 in the flux, suspending a crytal of KTiOPO. sub. 4 in the melt and then slowly decreasing the temperature of the melt while essentially spatially isothermal conditions are provided throughout the melt.
Peter F. Bordui - Menlo Park CA George D. Calvert - Sunnyvale CA
Assignee:
Crystal Technology, Inc. - Palo Alto CA
International Classification:
C30B 708
US Classification:
117 28
Abstract:
A method of growing optical quality beta barium borate; crystals from a pure NaCl fluxed melt. The method comprises maintaining particular thermal field conditions throughout the melt and slowly cooling the melt to cause beta barium borate to crystallize from the melt. The rate of cooling may be at a rate of not greater than 3. degree. C. per day. The method may utilize a seed crystal, suspended into the melt, so that the beta barium borate may crystallize on the seed crystal.
Peter F. Bordui - Menlo Park CA Richard G. Norwood - San Jose CA Ronald Blachman - Sunnyvale CA
Assignee:
Crystal Technology, Inc. - Palo Alto CA
International Classification:
H01S 310
US Classification:
372 21
Abstract:
An optical element composed of a single crystal consisting essentially of potassium titanyl phosphate, which is represented by the formula KTiOPO. sub. 4 and which is doped with cerium. The optical element has a high optical transmissivity property for radiation from the near-UV to the mid-infrared spectral regions.
Composition For Growth Of Homogeneous Lithium Niobate Crystals
Peter F. Bordui - Menlo Park CA Richard G. Norwood - San Jose CA John L. Nightingale - Woodside CA
Assignee:
Crystal Technology, Inc. - Palo Alto CA
International Classification:
C30B 2930
US Classification:
423593
Abstract:
A new compositional relationship in the starting charge of a crystal growth station (FIG. 1 ) provides homogeneous monocrystalline lithium niobate. A new measurement system (FIG. 2 ) provides Curie point values of significantly greater accuracy then that of conventional measurements. Careful control of the starting charge composition for crystal growth and effective utilization of the measurement system enable the determination of the compositional range of starting charges for producing congruent crystalline production. The composition corresponds to a mol percentage of 48. 35. +-. 01 to 48. 40. +-. 01 of Li. sub. 2 O and the remainder Nb2. sub. O 5 for producing homogeneous crystal whose solidification fraction of the molten charge exceeds that which was heretofore achievable.
Name / Title
Company / Classification
Phones & Addresses
Peter F. Bordui Executive Director
Oclaro Photonics, Inc Mfg Optical Research Equipment