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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 |
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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