Reference: Lab experiments journalvol-5,No.1, Page-19

Laser diffraction by rectangular aperture

Model: LDR-201

Experiment(s):

Determination of wavelength of laser

Determination of width (and breath) of rectangular aperture

Specifications

1 . 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
                  

2 . Light detecting microscope

                    Bed travel: 100 mm (one axis)
Resolution: 0.001 mm
Output: Displayed on meter in mm
Sensor: Photo detector
Base: Cast iron

                  

3 . Rectangular hole slit

                    Mount: Suitable to be fitted on Laser
Hole dimension : 1 to 2 mm
                  

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