Huygens Principle
Single and Multiple Slits
Diffraction of LED Light
Diffraction at a Wire
Babinet Theorem
Diffraction of Coherent Light
PE-0400 Diffraction of Light
Principle set-up of PE-0400 Diffraction of Light
The figure on the left shows the arrangement using a laser. In case a LED is used, the Beam expander is exchanged against a collimating lens. To obtain crisp diffraction fringes most of the light should hit the diffraction pattern. In case of using a slit an extra cylindrical lens is used to convert the round beam into a line structure. When demonstrating the diffraction at a hole the round laser beam is used as it is.Description of the components of PE-0400 Diffraction of Light
Within the experiment a red emitting LED (5) or a green emitting laser (4) are used. For both light sources the controller (1) provides the individual current and voltage. The controllers microprocessor reads the property of the connected light source and sets the parameter accordingly. When using the green laser and a vertical slit (17,18) or wire (14), the beam expander (13) is needed to create in conjunction with the cylindrical lens (12) a vertical line shape. Different types of diffraction elements can be inserted to the plate holder (7). To verify the Babinet’s theorem a slit (17) and a wire (14)with same dimensions is used. Furthermore the diffraction fringes a double slit (18), a circular aperture (15) and a two dimensional structure (16) are created and recorded. For a first view, the translucent screen (8) is used. The fringes on the screen are recorded by the high resolution (8 MP) CCD camera (3) and are displayed live on the digital video controller (2). The image can be taken as still photo or as video. The video controller provides USB inputs for a memory stick or other external devices like mouse or keyboard. The HDMI output allows the connection to a projector in the lecture hall to demonstrate a live experiment.Item | Code | Qty. | Description |
---|---|---|---|
1 | DC-0020 | 1 | LED and Photodiode Controller |
2 | DC-0800 | 1 | CCD Camera Controller |
3 | DC-0820 | 1 | CCD Camera Module |
4 | LQ-0020 | 1 | Green (532 nm) DPSSL in ø25 housing |
5 | LQ-0210 | 1 | Red LED in ø 25 housing |
6 | MM-0020 | 3 | Mounting plate C25 on carrier MG20 |
7 | MM-0060 | 1 | Filter plate holder on MG20 |
8 | MM-0110 | 1 | Translucent screen on carrier MG20 |
9 | MM-0420 | 1 | Four axes kinematic mount on carrier MG20 |
10 | MP-0150 | 1 | Optical Bench MG-65, 500 mm |
11 | OC-0040 | 2 | Plano-convex lens f=40 mm in C25 mount |
12 | OC-0280 | 1 | Cylindrical lens f=80 mm in C25 mount |
13 | OC-0360 | 1 | Beam Expander x6 in ø25 housing |
14 | OC-0470 | 1 | Wire 0.05 mm in 50x50 frame |
15 | OC-0480 | 1 | Circular apertures in 50x50 mm frame |
16 | OC-0482 | 1 | Gauze 300 mesh in 50x50 mm frame |
17 | OC-0484 | 1 | Single slit 0.06 mm in 50x50 mm frame |
18 | OC-0486 | 1 | Double slit in 50x50 mm frame |
19 | UM-PE04 | 1 | Manual Diffraction of Light |
Media Type | Title | File Size [MBytes] | Action |
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PE-0400 Diffraction of Light under creation |
Download | ||
Catalogue Page | |||
JPEG, PNG, SVG | Pictures | ||
MP4 | Video |