Germanium substrate GE Flat Windows Optical Lenses Thermal Imaging Applications and Infrared Spectroscopy High hardness
Germanium window (Ge) is a chemically inert material with a permissive spectrum range of 2-12μm, which is a commonly used infrared optical material, with high hardness, good thermal conductivity, insoluble in water, etc., and is used in infrared imaging systems and infrared spectrometer systems.
The window is one of the basic optical elements in optics, which is usually used as a protective window for electronic sensors or detectors to the external environment, and is used for the isolation of the environment on both sides, such as separating the inside and outside of the instrument, so that the inside and outside of the instrument are isolated from each other, so as to protect the internal components from interference, and the window does not change the magnification of the system.
Features
Optical Properties:
- High light transmittance: Germanium has excellent light transmittance in the infrared band (about 2 μm to 18 μm), making it ideal for infrared imaging and spectroscopic analysis.
- Refractive index: Germanium has a refractive index of about 4.0 (at a wavelength of 10 μm) and is able to effectively focus and transmit infrared light.
Mechanical Properties:
- Hardness: Germanium is relatively hard and has good wear resistance.
- Toughness: Germanium exhibits good toughness in a certain temperature range and is able to withstand certain impacts.
- Thermal stability: It can still maintain stability under high temperature conditions, and is suitable for applications in high temperature environments.
- Chemical stability: Good resistance to a wide range of chemicals, but caution is still required in strong acids and bases.
Technical Parameters
| Materials: | Ge Single Crystal |
| Diameter: | 2-450mm |
| Diameter tolerances: | +/-0.1 |
| Surface: | 60-40 Standard |
| Chamfer : | 0.25mm×45° |
| Coating: | 2-14μm |
| Application: | Infrared imaging,Optical communications |
Applications
- Infrared imaging: widely used in windows and lenses in infrared imaging systems (e.g., thermal imaging cameras, night vision devices).
- Spectral analysis: Used as an optical window in infrared spectrometers to help analyze the composition of substances.
- Laser technology: as a window material for lasers, especially in the mid-infrared and far-infrared wavelength ranges.
- Infrared sensors: Used in a variety of infrared sensors and detectors to help detect and measure infrared radiation, widely used in security and surveillance systems.
- Optical communication: In optical communication systems, germanium windows can be used for signal transmission in the infrared band to improve communication efficiency.
- Scientific applications: In the laboratory and in research, as an optical component for various experiments and optical measurements.
- Semiconductor devices: In some electronic devices, germanium acts as a window to the semiconductor material and participates in the regulation and transmission of light.
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