R
Helium-Neon-Laser Head, 5 mW
08701.00
PHYWE Systeme GmbH & Co. KG
Robert-Bosch-Breite 10
D-37079 Göttingen
Phone
+49 (0) 551 604-0
E-mail
[email protected]
Fax
+49 (0) 551 604-107
Internet
www.phywe.de
Operating instructions
Fig. 1: Helium-Neon-Laser Head, 5 mW 08701.00.
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observation of laser experiments must also be informed of
the hazards of laser light and in particular of the hazards
associated with directly looking into the laser beam.
SAFETY INSTRUCTIONS
Laser radiation
Avoid direct exposure to beam
Laser Class 3B
The laser area has to be restricted to the absolutely necessary
dimensions. It must be secured against unauthorised access
by use of mechanical means (e.g. moveable lattice grate,
ropes). Rooms that are used for laser experiments must be
marked off with laser warning signs in a clearly visible manner
while the laser is in use.
according to DIN EN 60825-1 (VDE 0837-1)
Class 3B
The accessible laser radiation is dangerous for the eyes,
and in special cases also the skin.
Do not look directly into the laser beam. Moreover, do not
look into it when its diameter is extended, for example, by
lenses. The optical phenomena to be examined should be
observed on a projection screen or transparent screen that
reduces the intensity of the radiation for the observing eye
to a safe value.
Caution!
According to DIN EN 60825-1
• Caution – Use of controls or adjustments or performance of
procedures other than those specified herein may result in
hazardous radiation exposure.
Fasten all of the optical devices in the beam path to where
their position cannot be changed accidentally. Intentional
position changes must be performed with great care in
order to avoid endangering any persons, e.g. by beam
reflections that may also be caused by objects that are not
part of the experiment set-up.
• The unit is intended solely for use in dry rooms without any
risk of explosion.
• Do not use the unit if it is visibly damaged.
• Do not use the unit for purposes other than the ones it is
intended for.
The light-proof, closed housing safely prevents
uncontrolled radiation emergence. The laser beam outlet is
located at the end of the cylinder and marked with a
“Beam” label. There is also a shutter that can be used to
block the beam.
The power supply unit, part no. 08702.93, is necessary for
safe operation.
1.1 Protective measures and rules of conduct
Use the lowest necessary laser power for the experiments.
When observing the images and figures that are produced
during the experiments in diffuse, scattered, or diffracted
laser light, ensure not to exceed the glare limit.
Only persons who have been sufficiently informed of the
hazards of laser light can be involved or present when the
experiment is set up. Persons who participate in the
08701.00/1908
Radiation exposure above the maximum permissible
exposure, also by reflected or scattered laser radiation,
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must be prevented. If this is not possible in the laser areas
of class 3B, wear the suitable protective eyewear, clothing,
and gloves.
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Laser protection goggles DIN EN 207
Laser alignment goggles DIN EN 208
Apart from using laser protection goggles (part no.
08581.10), one should also consider skin protection if the
radiation is above 100 J/m2 or if the irradiance is above
100 W/m2.
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Prior to using protective eyewear or clothing, please
ensure that they are suitable for your particular application
and not visibly damaged. Consult a laser safety officer if in
doubt.
Fig. 2: Holder for coaxial laser 08705.00 and
Adjusting ring 08710.01.
If the laser device is not used, secure it against
unauthorised use by removing the key from the key switch
of the power supply.
and other electromagnetic phenomena so that it no longer
functions within the given technical specifications. The
following measures reduce or do away with disturbances:
Avoid fitted carpets; ensure potential equalization; carry out
experiments on a conductive, earthed surface, use screened
cables, do not operate high-frequency emitters (radios,
mobile phones) in the immediate vicinity.
1.2 Conduct in the event of an accident/First aid
Note: The laser must be in operation for at least one hour to
reach the stable equilibrium of its power output when it is
used to measure the light power or to produce holograms..
If a person has suffered an eye injury due to laser radiation,
the injured person should immediately see an
ophthalmologist. (One can assume an eye injury when
exposure to laser radiation has occurred).
• Disconnect the unit from the power source.
• Rescue the injured person from the danger zone and
perform first aid.
• Inform the central telephone office and ask them to call
an emergency doctor and/or the fire service.
2 PURPOSE AND CHARACTERISTICS
The He-Ne-laser is used to generate a monochromatic,
coherent, polarised beam of light with an extremely low
divergence and a small cross-section. It is, therefore,
particularly suitable as a source of light for experiments in
wave optics (diffraction phenomena and interference) and in
holography.
To prevent unauthorised persons from using the laser unit,
the operating unit 08702.93 that is necessary for safe
operation is equipped with a key switch.
laser class 3B
Wavelength
TEM00 mode selection
Degree of polarisation
Maximum power output
Beam divergence
Maximum power fluctuation
Service life
Nominal current
632.8 nm
99%
1:500
5 mW
1 mrad
2.5% / 8 h
approx. 15,000 h
6.5 mA
Housing dimensions:
Diameter
Lenght
Weight
Equipment
3 HANDLING
For the fixage of lasers, two holders with three point support
(1) and, for height adjustment, two adjusting collars (2) are
required (Fig. 2).
4 NOTES ON OPERATION
This instrument is only to be put into operation under
specialist supervision in a controlled electromagnetic
environment in research, educational and training facilities
(schools, universities, institutes and laboratories).
This means that in such an environment, no mobile phones
etc. are to be used in the immediate vicinity. The individual
connecting leads are each not to be longer than 2 m.
The instrument can be influenced by electrostatic charges
08701.00/1908
5 TECHNICAL DATA
He-Ne laser head
Safety class in accordance
with DIN EN 60825-1
(VDE 0837-1)
44.2 mm
402 mm
approx. 0.8 kg
- Connecting cable
and high-voltage connection
- holder
Included in delivery:
Holder for coaxial laser, 2 pcs.
Adjusting ring, 2 pcs.
08705.00
08710.01
Recommended accessories
Power supply and shutter for laser (5 mW)
Protection goggles for He-Ne-laser
08702.93
08581.10
Univ. power supply f. HeNe Laser
Nominal current
08701.99
6.5 mA
Please read the corresponding operating instructions for the
power supplies.
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NOTES ON THE GUARANTEE
We guarantee the instrument supplied by us for a period of
24 months within the EU, or for 12 months outside of the EU.
Excepted from the guarantee are damages that result from
disregarding the Operating Instructions, from improper
handling of the instrument or from natural wear.
The manufacturer can only be held responsible for the
function and technical safety characteristics of the
instrument, when maintenance, repairs and alterations to the
instrument are only carried out by the manufacturer or by
personnel who have been explicitly authorized by him to do
so.
7 WASTE DISPOSAL
The packaging consists predominately of environmental
compatible materials that can be passed on for disposal by
the local recycling service.
Should you no longer require this product, do
not dispose of it with the household refuse.
Please return it to the address below for proper
waste disposal.
PHYWE Systeme GmbH & Co. KG
Abteilung Kundendienst
Robert-Bosch-Breite 10
D-37079 Göttingen
Phone +49 (0) 551 604-274
Fax
+49 (0) 551 604-246
08701.00/1908
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