Magnetic & Electrical Characterization
Vapor Cell
Description:
A vapor cell is a tiny, sealed chamber, made of glass or quartz, that holds a small amount of atomic vapor such as rubidium, cesium, or other alkali metals. These cells provide a controlled environment where the atoms can interact with light or magnetic fields, making them essential components in precision measurement devices.
Principle:
Vapor cells are sealed enclosures containing alkali atoms such as Rubidium, Cesium, or Potassium, often combined with buffer gases. When illuminated by laser light, these atoms undergo quantum transitions that can be probed optically or magnetically. The controlled environment ensures stable atomic density and reproducible measurements, making vapor cells essential for spectroscopy, magnetometry, and quantum sensing.
Types of Vapor Cells
1.Glass Vapor Cells
- Alkali Metals: Rubidium (natural abundance, Rubidium-87), Cesium, Potassium
- Buffer Gases: Nitrogen, Neon, Helium-4
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Geometries:
• 5 × 5 × 5 mm³ ID; 1 mm wall
• 10 × 10 × 10 mm³ ID; 1 mm wall - Order Details: Minimum batch of 5 cells.
2.Microfabricated Vapor Cells
- Alkali Metals : Rubidium-87, Cesium
- Buffer Gas: Nitrogen
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Construction:
• 3 × 3 × 3 mm³ ID, 5 × 5 × 3.4 mm³ OD
• Body: Silicon ring, 1 mm wall
• Windows: Borosilicate glass, 0.2 mm thick - Order Details: Minimum batch of 5 cells.
Applications:
- Atomic Spectroscopy: High-resolution studies of alkali transitions.
- Magnetometry: Ultra-sensitive magnetic field detection.
- Quantum Technologies: Core components in atomic clocks, frequency standards, and quantum sensors.
- Nonlinear Optics: Exploring light-matter interactions such as four-wave mixing.
- RF Field Sensing : Specialized vapor cells enable calibration-free radio-frequency measurements.
- Integrated Devices : Microfabricated cells support miniaturized, chip-scale quantum devices.
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