Michelson Interferometer

Product Code : SLE/M/38

Michelson Interferometer (Product Code: SLE/M/38) is an optical instrument used to produce and measure interference fringes, for experiments such as finding the wavelength of monochromatic light in college physics laboratories. Its movable mirror is driven by a 1 mm pitch lead screw, with a slow-motion drum reading to 0.0001 mm. It is made by Jain Scientific Equipments Pvt Ltd (ScienceLab), an OEM manufacturer, at its own factory in Ambala, India, for buyers of optics lab equipment in India and abroad.

Specifications

ParameterDetail
MirrorsMovable surface-coated mirror; fixed surface-coated mirror loaded with springs
OpticsBeam splitter and compensator
Mirror no. 1 driveMain knob, least count 0.01 mm
Mirror no. 2 driveSlow-motion drum, least count 0.0001 mm
Lead screwWell-ground, pitch 1 mm, with spring knob for adjustment
Mirror alignment3 knurled heads to set mirror no. 2 parallel to mirror no. 1
Pin-hole adjustmentScrews with nut and spring for horizontal and vertical adjustment of the pin-hole view
ViewingUniversal adjustable telescope with cross-line graticule; telescope holding clamp (universal type); adjustable eyepiece
Illumination opticsDiffused glass screen with pin-hole holder; pin-hole disc; adjustable condenser unit
Scale readingViewing window to read the main scale
MountingBase on stand for the interferometer
Product codeSLE/M/38
ManufacturerJain Scientific Equipments Pvt Ltd (ScienceLab) — OEM
Country of originIndia (made in Ambala, Haryana)

What Is the Michelson Interferometer Used For?

The beam splitter divides light from the source into two paths, one to each mirror; when the beams recombine they form circular fringes seen through the telescope. Moving mirror no. 1 changes one path length, and every fringe that appears or vanishes at the centre corresponds to half a wavelength of travel. Counting fringes against the drum reading gives the wavelength of a monochromatic source, a standard experiment for B.Sc. and M.Sc. physics.

The same set-up is used to find the separation of the sodium D lines from the spacing of fringe visibility, and to estimate the thickness or refractive index of a thin transparent sheet placed in one arm. Start by aligning with the pin-hole disc and the three knurled heads until the two pin-hole images coincide, then switch to the diffused screen and bring the fringes into view before taking readings. It is one of the classic Michelson interferometer India syllabus experiments.

What to Specify When Ordering

  • Number of interferometers for the optics laboratory
  • Whether you also need a light source, such as a sodium lamp and its power supply (not part of the listed parts)
  • Any spare parts you want with the order, such as an extra pin-hole disc

OEM Manufacturer

Jain Scientific Equipments Private Limited, trading as ScienceLab, is the OEM (original equipment manufacturer) of this Michelson Interferometer. The instrument is made and assembled at the company's own licensed factory at 449, HSIIDC Industrial Area, Saha, Ambala, Haryana, India, rather than bought in from a trader.

Because the manufacturer quotes directly, universities, colleges, dealers and importers in India and international markets deal with the people who build the interferometer. Replacement parts such as the pin-hole disc, eyepiece or telescope clamp, and repeat orders for additional lab benches, are handled by the manufacturer itself — just ask us. Read more on the ScienceLab company profile.

Related Laboratory Equipment

Light sources and optics apparatus used with an interferometer:

This instrument is listed in our Microscope category; more optics apparatus is in Physics Lab Equipment.

Frequently Asked Questions

What experiments can be done with the Michelson Interferometer?
The Michelson Interferometer is used to determine the wavelength of monochromatic light, the separation of the sodium D lines, and the thickness or refractive index of a thin transparent sheet. These are standard experiments in undergraduate and postgraduate physics practicals.

How finely can the mirror be moved on the Michelson Interferometer?
On the Michelson Interferometer, the main knob moves mirror no. 1 with a least count of 0.01 mm, and a slow-motion drum gives a least count of 0.0001 mm. Both act through a well-ground lead screw of 1 mm pitch, with the main scale read through a viewing window.

How are the mirrors of the Michelson Interferometer aligned?
Alignment on the Michelson Interferometer uses three knurled heads that set mirror no. 2 parallel to mirror no. 1, together with the pin-hole disc and diffused glass screen. Spring-loaded screws adjust the pin-hole view horizontally and vertically until circular fringes appear.

Is a light source included with the Michelson Interferometer?
A light source is not among the listed parts of the Michelson Interferometer, which includes a condenser unit, pin-hole disc and diffused screen for the illumination path. Most laboratories use a sodium spectral lamp with its power supply; add one to your enquiry if needed.

Who manufactures the Michelson Interferometer?
The Michelson Interferometer is manufactured by Jain Scientific Equipments Pvt Ltd (ScienceLab) as the OEM, at its own licensed factory at Saha, Ambala, Haryana, India. Quotations, repeat orders and replacement-part requests go directly to the manufacturer rather than through a trader.

Is a calibration certificate available for the Michelson Interferometer?
Calibration-certificate availability for the Michelson Interferometer should be discussed with us before ordering. Mention it in your enquiry through the contact page and we will confirm what documentation can be provided with the instrument.

Request a Quote

Quotations for the Michelson Interferometer come straight from the manufacturer. Send the quantity and any light source or spares you need through our contact page, or add the item to the enquiry cart.

Last updated: 24 September 2026

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