Technology Labs
FOL - MI Michelson Interferometer
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About Product
Michelson Interferometer is a widely used instrument formeasuring wavelength oflight, refractive index oftransparent materials etc.The interferometer is designedand constructed inmodular fashion. The beam splitter is designed to reflect 50% of the incident light andtransmit the other 50%.
1 ) Laser diode used as the light source.
2 ) Precision kinematic mounts provided for optical components.
3 ) Research-grade optical components used throughout the instrument.
4 ) Modular design for easy assembly and alignment.
5 ) Individual components can be assembled and adjusted independently
2 ) Precision kinematic mounts provided for optical components.
3 ) Research-grade optical components used throughout the instrument.
4 ) Modular design for easy assembly and alignment.
5 ) Individual components can be assembled and adjusted independently
Optical Breadboard with Support
i) Dimensions: 800 mm × 600 mm
ii) Material: Stainless Steel
iii) Quantity: 1 No.
Beamsplitter Mount
i) Adjustment: 2 degrees
ii) Range: Black anodized
iii) Material: Aluminium alloy
iv) Quantity: 1 No
Mirror Mount with Precision Translation
i) Adjustment Range: Black anodized
ii) Material: Aluminium alloy
iii) Least count: 0.01 mm
iv) Quantity: 1 No.
Screen with Mount
i) Dimension: 75 mm × 75 mm
ii) Quantity: 1 No.
Mirror with Cell
i) Diameter: 25 mm
ii) Thickness: 6 mm
iii) Material: Borofloat
iv) Coating: Aluminium
v0 Quantity: 2 Nos.
Glass Slide
i) Dimension: 75 mm × 25 mm
ii) Thickness: 1 mm
iii) Material: Float
iv) Quantity: 5 Nos.
Diode Laser with Power Supply (Green)
i) Wavelength: 532 nm
ii ) Optical Power: 5 mW
iii) Quantity: 1 No.
Kinematic Laser Mount
i) Material: Black anodized Aluminium alloy
ii) Adjustments: Using 80 TPI lead screws
iii) Adjustment Range: ±3 degrees
iv) Quantity: 1 No.
Mirror Mount with Translation
i) Adjustment Range: ±3 degrees
ii) Fine adjustments: Using 80 TPI lead screws
iii) Material: Black anodized Aluminium alloy
iv) Quantity: 1 No.
Rotation Stage
i) Resolution: 1° / division
ii) Material: Black anodized Aluminium alloy
iii) Quantity: 1 No.
Pressure Cell
i) Length: 10 cm
ii) Pressure Range: 0 – 300 mm Hg
iii) Quantity: 1 No.
Beamsplitter
i) Dimension: 50 mm × 50 mm
ii) Thickness: 6 mm
iii) R/T Ratio: 50/50
iv) Material: N-BK7
v) Coating: Aluminium
vi) Quantity: 1 No.
Diode Laser with Power Supply (Red)
i) Wavelength: 650 nm
ii) Optical Power: 5 mW
iii) Quantity: 1 No.
Accessories
i) Thumb screws
ii) Dust protective cover
iii) User manual
i) Dimensions: 800 mm × 600 mm
ii) Material: Stainless Steel
iii) Quantity: 1 No.
Beamsplitter Mount
i) Adjustment: 2 degrees
ii) Range: Black anodized
iii) Material: Aluminium alloy
iv) Quantity: 1 No
Mirror Mount with Precision Translation
i) Adjustment Range: Black anodized
ii) Material: Aluminium alloy
iii) Least count: 0.01 mm
iv) Quantity: 1 No.
Screen with Mount
i) Dimension: 75 mm × 75 mm
ii) Quantity: 1 No.
Mirror with Cell
i) Diameter: 25 mm
ii) Thickness: 6 mm
iii) Material: Borofloat
iv) Coating: Aluminium
v0 Quantity: 2 Nos.
Glass Slide
i) Dimension: 75 mm × 25 mm
ii) Thickness: 1 mm
iii) Material: Float
iv) Quantity: 5 Nos.
Diode Laser with Power Supply (Green)
i) Wavelength: 532 nm
ii ) Optical Power: 5 mW
iii) Quantity: 1 No.
Kinematic Laser Mount
i) Material: Black anodized Aluminium alloy
ii) Adjustments: Using 80 TPI lead screws
iii) Adjustment Range: ±3 degrees
iv) Quantity: 1 No.
Mirror Mount with Translation
i) Adjustment Range: ±3 degrees
ii) Fine adjustments: Using 80 TPI lead screws
iii) Material: Black anodized Aluminium alloy
iv) Quantity: 1 No.
Rotation Stage
i) Resolution: 1° / division
ii) Material: Black anodized Aluminium alloy
iii) Quantity: 1 No.
Pressure Cell
i) Length: 10 cm
ii) Pressure Range: 0 – 300 mm Hg
iii) Quantity: 1 No.
Beamsplitter
i) Dimension: 50 mm × 50 mm
ii) Thickness: 6 mm
iii) R/T Ratio: 50/50
iv) Material: N-BK7
v) Coating: Aluminium
vi) Quantity: 1 No.
Diode Laser with Power Supply (Red)
i) Wavelength: 650 nm
ii) Optical Power: 5 mW
iii) Quantity: 1 No.
Accessories
i) Thumb screws
ii) Dust protective cover
iii) User manual
1) 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.
2) 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 path length of the light beam as the glass plate is rotated 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 wavelength of light used and
θ is the angle turned for N fringes.
3) To Study Refractive Index Change in Air Under Different Pressures and Determination of Refractive Index of Air
Let λ be the wavelength of light, n the refractive index of air at atmospheric pressure, d the length of the air cell, Patm the current atmospheric pressure and ΔP the pressure change.
The relationship between the pressure change ΔP and the number of fringes shift mΔP is given by:
mΔP = [2d (n − 1) / λ] (ΔP / Patm)
Graph relation:
Slope = mΔP / ΔP
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.
2) 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 path length of the light beam as the glass plate is rotated 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 wavelength of light used and
θ is the angle turned for N fringes.
3) To Study Refractive Index Change in Air Under Different Pressures and Determination of Refractive Index of Air
Let λ be the wavelength of light, n the refractive index of air at atmospheric pressure, d the length of the air cell, Patm the current atmospheric pressure and ΔP the pressure change.
The relationship between the pressure change ΔP and the number of fringes shift mΔP is given by:
mΔP = [2d (n − 1) / λ] (ΔP / Patm)
Graph relation:
Slope = mΔP / ΔP
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