Michelson Interferometer

Michelson Interferometer

We are amongst the reputed manufacturers of HL-517 michelson interferometer. These interferometers have lead screw of dia 17 mm, Pitch 1 mm with a threaded length of 200 mm. The lead screw and its nut are optically lapped for maintaining constancy of the pitch. Further, the mirror mounts are of kinematic type that has orthogonal tilt arrangement in x & y plane by using fine threaded screws.

Features:

• Mirror holders (Fitted with mirror mount), which makes them capable of holding mirrors of 25.4 mm dia & 12.5 mm thickness
• Interferometer provided by 3 scales
• Linear scale 0-150 mm graduated in mm is attached with bed of interferometer
• Graduated disc (0-100 Div.) may be peeped through glass window and is provided with head of the Interferometer
• One division of graduated disc H 0.01 mm
• A graduated slow motion drum (Graduation 0-100 Div) fitted on right hand side of Interferometer
• One division of sow drum = 00001 mm. that is least count of Interferometer: 10 'mm

Optical Parts:

• Beam Splitter: (Size: 40 mm x 30 mm x 8 mm), partially coated
• Coating Mat: Al + Sio2: R/T ratio: 50/50 ± 5%
• Optical finish: A/10 both faces
• Parallelism between their faces <5 arc seconds

Note: Beam splitter plate (before coating) & compensating plate are carved from same optically worked glass plate having:

Specifications:

• Thickness: 8 mm
• Surface flatness: A/10
• Parallelism between two faces: <5 arc seconds to maintain their optical identity
• Mirror (Front surface coated) Dia: 25 mm, Thickness: 10 mm
• Surface flatness of coated face: A/10 & other face optically polished
• Mirrors reflectivity * 90%
• Telescope Observation The Fringes: Objective is an achromatic doublet of din 25 mm
• F.L: 125 mm
• Telescope magnification: 10x