3B Scientific Helium-Neon Laser - Manual (Page 2)

3B Scientific GmbH • Rudorffweg 8 • 21031 Hamburg • Germany • www.3bscientific.com
Subject to technical amendments.
2. Description
The He-Ne laser is a coherent, monochromatic light
source for experiments on reflection, refraction,
diffraction and interference, for the creation and
display of holograms, as well as for rotating the
plane of polarisation (saccharimetry, Kerr effect,
Faraday effect).
The He-Ne-Laser has an anodised metal housing
with a key switch and a neutral filter for attenuat-
ing the beam. Power is supplied via a plug-in
power supply unit. To disperse the beam, micro-
scope objectives may be screwed onto the light
outlet.
2.1 Scope of delivery
1 He-Ne laser
2 Key
2 Stand rods (long and short)
1 Plug-in power supply
2.2 Accessories
For beam dispersal:
e.g. achromatic objective 4x / 0.10 W30613
3. Technical data
Output power: < 0.2 mW, max. 1 mW
(without filter), class 2
Wavelength: 633 nm
Beam diameter: 0.48 mm
Beam dispersal: 1.7 mrad
Mode: TEMoo
Polarisation: Random
Lifespan: > 12000 hours
Power supply: 12 V DC, 1 A
Dimensions: 200 x 40 x 50 mm
Weight: 0.6 kg approx.
4. Operation
• Plug the power supply for the laser into the
mains.
• Turn the key 90° to the right to switch on the
laser.
A laser beam may emerge immediately or after a
few seconds (if the equipment has not been used
for some time). An indicator lamp lights when the
laser is switched on.
• To turn off the laser turn the key 90° to the
left.
• To select the power of the laser, the filter lever
may be set to the required position so that the
neutral filter is swung in or out of the beam.
• For dispersal of the beam, screw a microscope
objective onto the thread.