Optics Upgrade 3

Diffraction using a laser

With the Altay Optics Upgrade 3 you will complete your advanced optics experiments. Optics Upgrade 3 introduces further concepts of physical optics and allows study in advanced optics. The diode laser allows you to study light as an electromagnetic wave and introduces the concept of diffraction. As in Optics Upgrade 2 all components are designed to work with the optical bench.

Order Code: 4944.30   £216

Equipment needed

• Track Set (code 4954.12)
• Optics Upgrade 1 (code 4944.11)

Components

• Laser on stem (630 – 670 nm), with rechargeable accumulators
• Plug-in power supply
• Holder for slides and diaphragms
• Slider for Holder
• Slider for projector
• Slide with 1 slit (width 0.06 mm)
• Slide with 2 slit (width 0.06 mm, separation 0.20 mm, pitch 0.26 mm)
• Slide with 3 slit (width 0.06 mm, separation 0.20 mm, pitch 0.26 mm)
• Slide with 4 slit (width 0.06 mm, separation 0.20 mm, pitch 0.26 mm)
• Slide with 5 slit (width 0.06 mm, separation 0.20 mm, pitch 0.26 mm)
• Slide with 6 slit (width 0.06 mm, separation 0.20 mm, pitch 0.26 mm)
• Coarse grating 1 (4 lines per mm, line/space ratio 3:1)
• Coarse grating 2 (4 lines per mm, line/space ratio 6:1)
• Coarse grating 3 (8 lines per mm, line/space ratio 3:1)
• Metal gauze 300 mesh for bidimensional diffraction grating
• Diffraction grating

Laws and principles investigated

• The Laser - principles of operation
• Investigating diffraction
• Experiments with interference patterns