Reference: Lab Experiments Journal vol-4, No.3, Page-180 Lab Experiments Journal vol-12, No.4, Page-310

Michelson Interferometer

Experiment(s):

Determination of average wavelength of Sodium D1 and D2 lines

Determination of D1-D2 separation & thickness of Mica

Determination of average wavelength of semiconductor diode Laser

Specifications

1 . Interferometer

                    Adjustable beam splitter,  twin parallel arrangement
Mirror: 2 Axis adjustment
LC: 0.001 mm
Measurement: 3 scale method
Mirror coating: Silver finished
                  

2 . Laser & power supply

                    Type: Semiconductor diode Laser with beam diffuser
Wavelength: 625 nm (Red)
Output power: 3 mW
Mount: Cast iron base with leveling screw

Power supply:
Output: Suitable for 3 mW &  5 mW semiconductor Lasers
Rated Input: 220 V/50 Hz or 110 V/60 Hz
                  

3 . Digital fringe counter

                    Calibration for dark and bright spots: Manual
Suitable for rings >10 mm dia
Display: LCD readout
Rated Input: 220 V/50 Hz or 110 V/60 Hz
                  

4 . Sodium vapour lamp set

                    Lamp: Philips / Thorne 35 W
Lamp House: Single lamp type with fixed slit openings
Transformer: 35 W, instant ON
Rated Input: 220 V/50 Hz or 110 V/60 Hz
                  

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