Method for enhancement of useful luminescence from vacancy defects in refractory oxides for tunable lasers and the refractory oxides produced thereby

Patent Application · Mon Sep 12 00:00:00 EDT 1988

OSTI ID:5401658

Chen, Yok

Refractory oxide crystals suitable for use in tunable lasers and a method for preparing the same are provided. The crystals are characterized by high quantum efficiency, high thermal stability, good crystal transparency, and a high percentage of useful luminescence. The method for preparation of the crystals involves removing substantially all the hydrogen, thermochemically reducing the crystal's oxygen content to produce oxygen (anion) vacancy defects, and subsequently irradiating the crystal with electrons to inactivate trace H{sup minus} ions so that an increased amount of short lived F{sup +} luminescence is produced when the crystal is optically excited.

• Research Organization: Oak Ridge National Lab., TN (United States)
• Sponsoring Organization: USDOE; USDOE, Washington, DC (United States)
• DOE Contract Number: AC05-84OR21400
• Assignee: Dept. of Energy
• Patent Number(s): PATENTS-US-A7243534
• Application Number: ON: DE91017340; PPN: US 7-243534
• OSTI ID: 5401658
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
36 MATERIALS SCIENCE
OXIDES
LUMINESCENCE
REFRACTORIES
CALCIUM OXIDES
CRYSTAL DEFECTS
INVENTIONS
IRRADIATION
LASERS
MAGNESIUM OXIDES
VACANCIES
ALKALINE EARTH METAL COMPOUNDS
CALCIUM COMPOUNDS
CHALCOGENIDES
CRYSTAL STRUCTURE
MAGNESIUM COMPOUNDS
OXYGEN COMPOUNDS
POINT DEFECTS
426002* - Engineering- Lasers & Masers- (1990-)
360603 - Materials- Properties