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LEOI-20 Michelson Interferometer
Category: Optical Experiment System  Publish Time: 2014-07-04 12:41 

LEOI-20 Michelson Interferometer
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LEOI-20 Michelson Interferometer

Description
The Michelson interferometer is an important instrument in today's physics laboratories and is often the first to be introduced to students for understanding beam interference, an important wave property of light. The Michelson interferometer produces interference fringes by splitting a beam of monochromatic light so that one beam strikes a fixed mirror and the other is incident on a movable mirror. When the reflected beams recombine, an interference pattern is produced. Michelson interferometer can be used for observing interference fringes and precisely measuring wavelength, distance and index of refraction.
Feathure
Smooth Mirror Movement
Precise Measurement
Two Micrometers
Application
a. Interference fringe observation
b. Equal-inclination fringe observation
c. Equal-thickness fringe observation
d. White-light fringe observation
e. Wavelength measurement of the Sodium D-lines
f. Wavelength separation measurement of the Sodium D-lines
g. Measurement of the refractive index of air
h. Holographic interferometry
i. Holographic reproduction 
Specification

Flatness of Beam Splitter and Compensator

0.05 λ

Coarse Travel of Mirror    

10 mm

Fine Travel of Mirror  

0.25 mm

Fine Travel Resolution 

0.5 μm

Wavelength Measurement Accuracy  

Relative error: 2% for 100 fringes  

Part list

Description

Qty

Interferometer Main Frame

1

Ground Glass Screen

1

Alignment Aperture

1

Instruction Manual

1

Sodium-Tungsten Lamp (optional)

Sodium lamp: 20 W; Tungsten lamp: 30 W adjustable

He-Ne Laser (optional)  

0.7-1 mW @632.8 nm, includes laser tube holder

Air Chamber with Gauge  (optional)

Chamber length: 80 mm; Pressure range: 0-40 kPa

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