China Wholesale Wien’s Displacement law Factories – LIT-6 Precision Interferometer – Labor

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China Wholesale Wien’s Displacement law Factories – LIT-6 Precision Interferometer – Labor Detail:

Experiments

1. Two-beam Interference observation

2. Equal-inclination fringe observation

3. Equal-thickness fringe observation

4. White-light fringe observation

5. Wavelength measurement of the Sodium D-lines

6. Wavelength separation measurement of the Sodium D-lines

7. Measurement of the refractive index of air

8. Measurement of the refractive index of a transparent slice

9. Multi-beam interference observation

10. Measurement of the He-Ne laser wavelength

11. Interference fringe observation of the Sodium D-lines

12. Demonstrating the principle of a Twyman-Green interferometer

Specifications

Description	Specifications
Flatness of Beam Splitter and Compensator	0.1 λ
Coarse Travel of Mirror	10 mm
Fine Travel of Mirror	0.625 mm
Fine Travel Resolution	0.25 μm
Fabry-Perot Mirrors	30 mm (dia), R=95%
Wavelength Measurement Accuracy	Relative error: 2% for 100 fringes
Sodium-Tungsten Lamp	Sodium lamp: 20 W; Tungsten lamp: 30 W adjustable
He-Ne Laser	Power: 0.7~ 1 mW; Wavelength: 632.8 nm
Air Chamber with Gauge	Chamber length: 80 mm; Pressure range: 0-40 kPa

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Fresnel Diffraction