We've started synthetic crystal research and growth since 1960. So far, we have developed over 30 types Synthetic Crystals.
Barium fluoride shows good optical transmission over wide spectrum range, which can be used as UV-IR windows in 0.15μm~0.25μm. It also presents excellent scintillation properties, which is widely used in high energy physics, nuclear physics and nuclear medical instruments ect.
| Main Properities and Performance | |
| Transmission Range(μm) | 0.15~12.50 |
| Transmittance | >90%(0.35~9μm,3mm) |
| Refractivity(2.58μm) | 1.4626 |
| Reflection Loss at 2.58μm | 6.8%(both faces) |
| Radiation length(cm) | 2.06 |
| Peak Emission | 310(slow);220(fast) |
| Decay Constant(ns) | 620(slow);0.6(fast) |
| Light Output[Na(TI)=100%] | 20%(slow);4%(fast) |
| Koop Hardness(kg/mm²) | 82 with 500g indenter |
| Solubility(g/100gH2O.13°C) | 0.17 |
| Density(g/cm³) | 4.89 |
| Melting Point(°C) | 1280 |
Found in 1960,Beijing Glass Research Institute(BGRI) is a state owned institute pioneered in optical materials.Over 48 years, BGRI has been growing accompanied by contributing to domestic and international projects in diverse areas of science and industry. Continued focus on innovation won BGRI more than 140 awards. Many successful R&D projects are consecutively taken into production. R&D laboratories and business devisions of Synthetic Crystals, Optical Fibers, Special Glass, Optical Thin Films were established.Today we run complete facilities in a new plant, located in OIP industrial park, Beijing, enabling us to handle all research, development, fabrication and characterization in house on a better platform. We are now in the forefront of advanced optical material industry and specialized in: 1.SPECIAL OPTICAL FIBER AND DEVICES(PMF, PMC, Infrared fiber, cold light guide)2.COMMUNICATION OPTICAL FIBER;3.OPTICAL PROCESSING AND OPTICAL FILM( Optical elements polishing: Lens, prism, windows,IR windows; Optical coating service: AR, HR, PR, BBAR, IR, UV filter) 4.SYNTHETIC CRYSTAL(Fluoride Optical Crystal ;Fluoride Scintillation Crystal);5.SPECIAL GLASSES(Special glass used in steel industry )6.Temperature Component (I-type Optical Fiber Thermometric SensorThermistor;Film/Glass/Ceramic- Platinum Resistor;Beckman Thermometer (Differential Thermometer);Normal Thermometer)
Barium fluoride-BaF2 Beijing Glass Research Institute UV window IR window nuclear physics
