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![LEOI-22 Precision Interferometer](upload/image/oes3_lit.png)
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Part NO. : | DCFBG-series |
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LEOI-22 Precision Interferometer
Description
This equipment combines the historically important Michelson
interferometer, the high resolution Fabry-Perot interferometer, and the useful
Twyman-Green interferometer in one unit. 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.
Twyman-Green interferometer is used to measure the defects in optical
components such as lenses, prisms, and windows etc.
Measurements are precise in three classical modes of operation. Switching
between the three modes of operation and aligning components are very simple,
as this complete set of high quality components is carefully mounted on a
heavy, stable base.
Feathure
Three Modes
Stable Base for Precise Measurement
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
l. Demonstrating the principle of a Twyman-Green interferometer
Specification
Flatness of
Beam Splitter and Compensator
0.05 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
Description
Qty
Interferometer
Main Frame
1
Ground Glass
Screen
1
Holder for
Beam Expander
1
Extension Arm
1
Two-in-One
Observation Screen
1
Transparent
Slice Samples
2
Transparent
Slice Clamp
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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