Reference: Lab Experiments Journal vol-4, No.1, Page-1

Basic Laser experiments

Experiment(s):

Determination of slit width

wavelength of Laser using mm scale as grating

wavelength of Laser using diffraction grating

Specifications

1 . Optical bench

                    Length: 1 m
Fixture: Three (for Laser source, grating/scale & screen)
Material: Aluminium & cast iron

2 . Semi-conductor diode Laser

                    Wavelength: 625 nm (Red)
Power: External power supply, mains operated (Included)
Base: Adjustable height
Power: 2 mW

3 . Adjustable slit

                    Maximum slit width: 5 mm
Minimum slit width: 0.1 mm
Slit length: 15mm

4 . mm graduation scale

                    mm graduation on acrylic scale
magnetically placed on base

5 . 3 in 1 Grating

                    3 gratings of grating constant 100 LPI, 300 LPI & 600 LPI

Kamaljeeth