DIFFRACTION GRATING EXPERIMENTAL SETUP

PARAMETERS:

• Apparatus must have 13 diffraction slides: Single slit, double slit, multiple slit 3, multiple slit 4, multiple slit 5, single tapered slit, fine grating, 4 holes, circular opaque spots. 
• Gray filter, mesh, coarse grating & grid pattern all individually slides are protected by two glass plates in frame. 
• Heavy, rigid and stable Optical bench Length – 1.5 mtr. with Scale, 4 point levelling 
• Material Aluminium or MS, Saddle holding rod from 8 to 15mm & provided with height and level adjustment screws. 
• He-Ne laser with built-in power supply (632mm), Beam spot 2.5mm, Power 2 mW, , current 4mA ~ 6mA,
• Dimension 300 x 62 x 82mm. 
• Slit Frame Size: 50mm x 50mm, Width=0.06mm & Separation=0.20mm (Single, Double, Three, Four, Five, & Six) Single & Double slit Tapered. 
• Transversal slider 25 – 0 – 25mm, LC 0.01mm Coarse Grating 4 & 8 lines/mm, line/space ratio 3:1 & 6:1. 
• Diffraction grating 80 lines / mm, 300 lines / mm.
• Circular apertures : 1.0, 0.60, 1.40, 0.30 mm nominal dia.