3B SCIENTIFIC PHYSICS U17303 Instructions D'utilisation page 8

2. Description
Equipment set for demonstrating fundamental
phenomena in wave optics by means of practical
experiments.
Experiment topics:
Refraction and interference at the surfaces of a
glass block, apertured diaphragm, square dia-
phragm, grating with slits, cross grating.
Michelson interferometer
Reconstruction of a hologram
Investigation of linearly polarized light
Absorption of light
The light source is provided by a partially polarized
diode laser with adjustable mount. Power is sup-
plied from a plug-in power supply (included) or
from batteries. The components are magnetic and
can be placed horizontally or vertically on the
included metal board, according to the set-up
required for the various experiments.
All components are stored in a case with shaped
foam inlay.
3. Contents
1 Diode laser with adjustable mounting
1 Plug-in power supply
1 Battery holder (without batteries)
2 Mirrors with adjustable mounting
1 Half-silvered mirror
1 Screen, white
1 Screen, frosted glass
1 Convex lens
1 Polarization filter
1 Holder for lens and filter
3 Colour filters in slide frames (red, green, blue)
2 Apertured diaphragms in slide frames
2 Square diaphragms in slide frames
3 Gratings with slits in slide frames
1 Cross grating in slide frame
1 Glass plate in slide frame
1 Holder for slide frames
1 Hologram
1 Metal board with removable strut
4 Rubber feet for metal board
1 Storage case
1 Experiment guide
4. Technical data
Diode laser:
Wavelength:
Plug-in power supply: primary 100 V AC – 240 V AC
Battery holder:
Metal board:
5. Sample experiments
5.1 Light interference
5.1.1 Light interference on a thin glass plate
•
Place the laser without the lens in the corner
of metal board, the laser beam should be par-
allel to the longer side of the board (see Fig. 1).
•
Place the holder with the glass plate in the
other corner of the board. The laser beam spot
should be visible on the plate. The vertical po-
sition of the beam spot can be adjusted by
turning the nut in the laser holder.
•
Position the ground screen in the corner di-
agonal to the glass plate.
•
Rotate the glass plate holder until the beam
spot is in the centre of the ground screen.
•
Place the lens holder with lens directly in front
of the laser or place the lens without holder in
contact with the laser to produce a diverging
beam.
The diameter of the beam should not be greater
then the diameter of the glass plate, to maximise
light utilisation.
•
Observe the interference pattern on the ground
screen. Adjust its position to see the best inter-
ference pattern.
Fig.1 Experimental set-up (F = lens, GP = glass plate, S =
ground screen)
2
laser safety class II, max. 1 mW
635 nm
secondary 3 V DC, 300 mA
for 2 x 1.5 V AA batteries
(batteries not included)
600 mm x 450 mm