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Michelson Interferometer

(Compact Model)

Model: HO-ED-INT-06C

Holmarc's Model No: HO-ED-INT-06C is a compact Michelson Interferometer. The beam splitter is designed to reflect 50% of the incident light and transmit the other 50%. The incident beam therefore is split into two beams; one beam is reflected towards mirror M1, the other is transmitted towards mirror M2. Half the light is transmitted through the beam splitter to M1 and the other half is reflected by beam splitter to M2. The reflected beams from M1 and M2 superimpose at the beam splitter and interference pattern can be observed on the screen.


Experiment Examples

    To determine wavelength of laser beam

The wavelength of laser is calculated by ;

λ  =  (2d / N) Δ


where 'd’ is the change in position that occurs for ‘N’ fringes to pass and Δ is the calibration constant of the micrometer



    To find refractive index of a transparent material

The light passes through a greater length of glass as the plate is rotated. The change in the path length of the light beam as the glass plate is rotated and relates the change in path length with the laser beam through air.

The refractive index of glass slide,

N  =  (2t - Nλ)  (1 - cos θ)  /  2t (1 - cos θ)  -  Nλ


Where t is the thickness of the glass slide, N is the number of fringes counted, λ is the wave length of light used and θ is the angle turned for N fringes.

Features

    The distance between the mirrors and beamsplitter is fixed

    The components are mounted on a rigid platform

    The instrument uses laser diode as light source

    Precision kinematic mounts for optical components

    The optics used in this device are of research quality
Related Topics

    Interference of light

    Constructive Interference

    Destructive interference

    Wavelength of light

    Refractive index
Scope of Supply


    Rigid Base Platform

Model No: ED-INT-06C-RBP
Size
:
450 mm x 325 mm
Material
:
Cast Iron
Quantity
:
1 no.
Rigid Base Platform

    Kinematic Laser Mount

Model No: ED-INT-06C-KLM
Material
:
Black anodized Aluminum alloy
Adjustments
:
Using 80 tpi lead screws
Adjustment Range
:
+/-4 degrees
Quantity
:
1 no.
Kinematic Laser Mount

    Beamsplitter Mount

Model No: ED-INT-06C-BSM
Degrees of freedom
:
2 degrees
Material
:
Black anodized Aluminium alloy
Quantity
:
1 no.
Beamsplitter Mount

    Mirror Mount with Translation

Model No: ED-INT-06C-MMT
Degrees of freedom
:
3 degrees
Fine adjustments
:
Using 80 tpi lead screws
Material
:
Black anodized Aluminium alloy
Quantity
:
1 no.
Mirror Mount with Translation

    Mirror Mount with Precision Translation

Model No: ED-INT-06C-MMPT
Degrees of freedom
:
3 degrees
Material
:
Black anodized Aluminium alloy
Least count of the micrometer
:
0.01 mm
Quantity
:
1 no.
Mirror Mount with Precision Translation

    Rotation Stage

Model No: ED-INT-06C-RS
Resolution
:
2° / division
Material
:
Black anodized Aluminium alloy
Quantity
:
1 no.
Rotation Stage

    Mirror with Cell

Model No: ED-INT-06C-MC
Diameter
:
25 mm
Thickness
:
6 mm
Material
:
Borofloat
Coating
:
Aluminium
Quantity
:
2 nos.
Mirror with Cell

    Beamsplitter

Model No: ED-INT-06C-BS
Dimension
:
50 mm x 50 mm
Thickness
:
4 mm
R / T ratio
:
50 / 50
Material
:
N-BK7
Coating
:
Aluminium
Quantity
:
1 no.
Beamsplitter

    Glass Slide

Model No: ED-INT-06C-GS
Dimension
:
75 mm x 25 mm
Thickness
:
1 mm
Material
:
Float
Quantity
:
5 nos.
Glass Slide

    Diode Laser with Power supply (Red)

Model No: ED-INT-06C-DLPR
Wave length
:
650 nm
Optical power
:
5 mW
Quantity
:
1 no.
Diode Laser with Power supply (Red)

    Accessories

User Manual
Allen keys
Thumb Screws
Dust Protective Cover

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