Diode Laser Diffraction with Standard Slides

Diffraction phenomenon of light can be observed when a laser beam passes through a diffraction slit. The intensity pattern can be determined using a pin photo detector with fine movement across the diffraction pattern.

Features:

• Pin hole with silicon photo detector.
• Class I diode laser with output power 0.4 – 0.8 mV.
• All individually slides are protected by two glass plates in frame.
• Saddle can hold rod from 8 to 15mm.
• Heavy, rigid and stable Triangular Optical bench (made of Al extrusion).
• Height and level adjustment screws (made of SS)

Objectives:

• Diffraction of light by single, double and multiple slit.
• Diffraction of light by fine, cross wire & wire mesh.
• Diffraction of light by transmission grating and by coarse grating.
• Diffraction of light by circular aperture. (Pinhole).
• Diffraction of light by grid and by grey filter.
• Diffraction of light by tapered single slit and by circular opaque spots.

Technical Data:

• Optical bench : Al exclusion, L = 1 m, Triangular shape with end stop, 4 point levelling (SS screw)
• Transversal slider : 25 – 0 – 25mm, LC 0.01mm
• Screen : Acrylic (translucent) 300 x 300 x 3mm
• Photo detector : Silicon photocell, 4mm safety socket, Aperture 1mm, rod 10mm dia.
• Fixed slider : Al Extrusion, Base width 50mm, H 115mm
• Connecting lead : Type Banana plug, Length 100cm
• Diode laser : Wavelength 635nm, Operating voltage 5V DC, Optical power 0.4 – 0.8mW, Class I
• Frame Size : 50mm x 50mm

Diffraction Slides

• Slit : Width 0.06mm & Separation 0.20mm (Single, Double, Three, Four, Five, & Six) Single & Double slit Tapered
• 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.
• Hologram : 50 x 50mm Transmission type
• Polaroids : 50 x 50mm linearly polarized

Scope of Delivery:

• 1 Optical bench triangular
• 4 Fixed slider
• 1 Transversal slider
• 1 Diode laser with power adaptor
• 1 Slit holder
• 1 Pin hole photo detector
• 1 Digital multimeter
• 1 Diffraction slides (Imported)
• 1 Single wire
• 1 Cross wire
• 1 Connecting lead
• 1 Diffraction grating (15000 lines)
• 1 Object screen