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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
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
Part list
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