Magnesium Oxide (MgO)
High-temperature resistant ceramic with optical transparency
Optical Ceramic Material
Magnesium Oxide is a refractory ceramic material offering high temperature resistance and optical transparency in specific wavelength ranges. It is typically used in high-temperature optical components and laser applications where conventional glasses and crystals would fail.
Is this material right for your application?
Use When:
Avoid When:
Consider Alternatives:
High-temperature optical performance is required
Refractory optical materials are needed
Laser systems operate under thermal stress
Conventional glasses or crystals are unsuitable
Harsh industrial environments are involved
High optical clarity across wide spectral bands is required
Precision imaging performance is critical
Lower-temperature materials are sufficient
Sapphire – superior mechanical strength
Fused Silica – better optical clarity and stability
Alumina ceramics – non-optical high-temperature uses
Key Properties
Optical
Moderate optical transparency
Mechanical
Hard ceramic material
Thermal / Environmental
Very high melting point
Excellent chemical resistance
Explore Related Optical Materials
Frequently asked questions about Barium Fluoride specifications and use-cases
FAQ
Q1. What is MgO used for in optics?
MgO is used in specialised optical and high-temperature applications.
Q2. What wavelength range does MgO support?
MgO transmits in parts of the visible and infrared depending on thickness.
Q3. Is MgO hygroscopic?
Yes. MgO reacts with moisture and should be protected.
Q4. What are common alternatives to MgO?
Sapphire and Fused Silica.
Good high-temperature stability
Moisture sensitivity limits open-air use
Niche optical material