This device includes a Michelson interferometer and an oven, together with a sensor and mirrors etc. Displacement of the specimen ends are measured in terms of the number of interference fringes.
Therefore, the linear expansion coefficient of the testing material can be calculated accurately.
- Compact structure
- Various type of short sample
- Low power consumption
- High accuracy
Features:
Standard Configuration
- He-Ne Laser: 1.0 mW@632.8 nm
- Type of Sample: Copper, aluminum, and steel
- Sample Length: 150 mm
- Heating Range: 18 °C ~ 60 °C, with temperature-control function
- Temperature Measurement Accuracy: 0.1 °C
- Display Value Error: ± 1%
- Power Consumption: 50 W
- Error of Linear Expansion Coefficient: < 3%
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lasers and experimental apparatus
