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[Technical Notes] GGG: Gadolinium Gallium Garnet Substrates
Gadolinium Gallium Garnet (Gd₃Ga₅O₁₂ or GGG) is a synthetic single-crystal material primarily utilized as a substrate for epitaxial thin-film growth. Due to its stable lattice structure and high chemical resistance, GGG serves as a critical platform in the fabrication of magneto-optical and microwave devices.
[Technical Notes] GAGG:Ce Crystals
In precision detection, selecting the appropriate scintillator material is critical to system performance. Cerium-doped Gadolinium Aluminum Gallium Garnet (Ce:GAGG) crystals are increasingly utilized in medical imaging, industrial inspection, and security screening due to their specific physical properties.
How X-ray Scintillators Work, Materials and Applications
Learn how scintillators enable X-ray imaging by converting X-rays into visible light. This guide explains the working principle of X-ray scintillators, common materials such as CsI and GOS, key performance parameters, and their applications in medical imaging, security screening, and industrial NDT.
Gadolinium Oxysulfide Scintillator: Material, Mechanism, Design
Gadolinium oxysulfide scintillator (Gd2O2S) is a high-density rare-earth ceramic material for X-ray and gamma-ray detection. This article analyzes Pr- and Tb-activated gadolinium oxysulfide, thin films and pixelated arrays, covering luminescence physics, sintering technology, emission characteristics (512–550 nm), and integration with silicon photodetectors in medical, industrial and security imaging systems.
Scintillators for PET (Positron Emission Tomography) Application
This article discusses how to implement PET medical imaging technology using scintillator arrays. It provides a comprehensive overview of the principles of PET medical imaging technology, the working principle of scintillator pixelated arrays in PET technology, and typical scintillator materials suitable for PET medical imaging, namely LYSO (Ce) cerium-doped yttrium lutetium silicate, GAGG (Ce) cerium-doped gadolinium gallium garnet, and the emerging technology of LaBr3 (Ce)-based scintillator arrays, which are suitable for time-of-flight positron emission tomography (TOF-PET).
What are the Factors Determining Waveplate Retardation Tolerance
This article provides a comprehensive overview of several factors that affect waveplate retardation tolerance.
Why Gold Coating Remains Irreplaceable?
In optical drawings and purchase specifications, the term “Gold Coated” is often highlighted as a standalone requirement. At first glance, it may appear to be a premium or even conservative choice. In practice, however, gold coatings are specified not because they are expensive, but because they solve a set of engineering problems that few other materials can address simultaneously.
Guide to Scintillator’s Application in Nuclear Monitoring
This technical article will provide a systematic introduction to scintillators used in the nuclear & radiation monitoring application, including radioactive isotope identification (RIID), surface contamination monitor, and fixed online dose rate monitoring, stating the technical challenges for each application and suggesting solutions based on scintillators.
Technical Overview of Alexandrite Crystal Rods
Technical explanation of Alexandrite (Cr:BeAl₂O₄) crystal rods, covering material composition, optical and physical properties, 755 nm laser emission mechanism, Czochralski crystal growth, precision machining processes, and applications in medical laser systems such as hair removal and pigmentation treatment.
Ce:YAG Scintillator Screen with Fused Silica Substrate
Detailed technical explanation of Ce:YAG scintillator crystals bonded to fused silica substrates. Includes material composition, fluorescence emission principles under X-ray excitation, thin-film scintillation behavior, adhesive-layer structure, manufacturing processes, and applications in high-resolution X-ray and soft X-ray imaging.