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LEOI-21 Universal Interferometer of Michelson and Fabry-Perot
Category: Optical Experiment System  Publish Time: 2014-07-04 12:47 

LEOI-21 Universal Interferometer of Michelson and Fabry-Perot
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LEOI-21 Universal Interferometer of Michelson and Fabry-Perot 

Description
This equipment combines the historically important Michelson interferometer and the high resolution Fabry-Perot interferometer in one rigid and compact structure. Michelson interferometer is still an important instrument in today's physics laboratories and is used for observing two-beam interference phenomena. Fabry-Perot interferometer is for observing multiple-beam interference and measuring the fine structure of spectrum. Measurements are precise in two modes of operation. Switching between the two modes of operation and aligning components are relatively simple. This instrument is suitable for physics teaching at universities and colleges.
Feathure
Two Interferometer Modes
Rigid, Compact and Precise
Complete Solution

Application
a. Two-beam Interference 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. Multi-beam interference observation
i. Measurement of the He-Ne laser wavelength
j. Interference fringe observation of the Sodium D-lines
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

Fabry-Perot Mirrors

30 mm (dia), R=95%

Wavelength Measurement Accuracy

Relative error: 2% for 100 fringes

Dimension

500×350×245 mm

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


 

a. He-Ne laser

h. F-P movable mirror

b. Side stage

i. Coarse micrometer

c. Beam expander

j. Movable mirror

d. Fixed mirror

k. Fine micrometer

e. Beam splitter

l. Movable stage

f. Compensator

m. Glass screen

g. F-P fixed mirror

E/E': Eye observation

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