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CIRCULAR HOLE DIFFRACTION

Experiment(s):

1. Determination of wavelength of Laser

2. Determination of diameter of aperture



Specifications:


a) Laser
Type: Semiconductor diode Laser
Wavelength: 625 nm (Red)
Output power: 3 mW
Mount: Cast iron base with levelling screw
Power supply
Output: Suitable for 3 mW &
5 mW semiconductor Lasers
Rated Input: 220 V/50 Hz
or 110 V/60 Hz
Mains cord: 2 pin


b) Light detecting microscope
Bed travel: 100 mm (One Axis)
Resolution: 0.001 mm
Output: Displayed on metre in
mm
Sensor: Photo detector
Base: Cast Iron


c) Circular hole slit
Mount: Suitable to be fitted on
Laser
Hole dia: 1 to 2 mm

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