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LASERS
Spectronika Copper vapor lasers offer a sealed off tube design (which eliminates bulky and troublesome
gas cylinders), high power output, air-cooling (no water required), unique colours, a brightness factor of 2X, low AC power
consumption, integrated head and power supply; all in a package that weights
just under 100 Lbs. [45 Kg] -- at a very reasonable price.
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One piece design
makes shipping and set-up simple
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Sealed off tube
construction requires no flowing gas for operation
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Optics bonded to
the tube thus little or no alignment is required
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Low cost replacement
tubes are simple to change
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High output
power of 5 watts average - 8 watt model available by special order
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Brightness
factor of 2X means that the 5 watt Copper Vapour laser appears as bright to the eye as
a 10 watt argon laser!
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Unique gold and
emerald green colours for a variety of applications
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Air cooling
eliminates messy water hoses and gives simple operation
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Laser requires
only 220-230 VAC @ 8 amps making it ideal for operation from a
generator or in applications where AC power is limited
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Ideal for laser beam
show applications - high power with high visibility
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Integrated tube
and optics means new tubes can be installed in under an hour
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Low cost
CU-BR5
Specifications:
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Average power -
5 W
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Wavelength - 511
nm; 578 nm
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Green/Yellow
(gold) ratio - 1.4/1
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Pulse duration -
30 ns (FWHM - Green: - 20 ns; Yellow: - 20 ns)
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Peak power: -
8.8 kW (Estimate by the average P = 5 W, f = 19 kHz and pulse length
30 ns (FWHM)).
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Pulse repetition
rate - 19 - 20 kHz
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Beam diameter -
14 mm
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Divergence - 2.0
mrad (full angle)
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Pointing
stability - 0.2 mrad typically
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Power drift -
less than ± 2 % absolute
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Line voltage -
220 VAC (±5%) 50/ 60 Hz
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Readiness time -
approximately 10 minutes to full power
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Maximum power
consumption - 1.5 kW [220-250 VAC, 7.5 Amps, 50/60 Hz]
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Dimensions -
1100 x 360 x 175 mm
The CuBr laser consists
of two main units - the laser head and the power supply, both
installed on the same frame in a single enclosure. The laser head is
a specially designed quartz discharge tube with an optical resonator
attached. The latter comprises an adjustable fully reflecting plane
mirror mounted at one of the tube ends, and an output coupler
(quartz window) directly fixed to the other tube end. An isolating
shield separates the laser head from the power supply. When the
resonator is properly adjusted, the laser beam cross-section
represents a filled circle and the laser power reaches its maximum
value .In order to ensure best conditions for the discharge, a metal
heating jacket containing a resistance heater envelopes the tube.
The
laser discharge tube:
The laser tubes are carefully constructed by hand in the tube department using the almost dying craft of glass blowing. The tube is shaped with a series of "dimples" on the bottom to hold the Copper halide which is heated and subjected to a pulsed high voltage arc to dissociate and lase the copper atoms.
After the tube has been formed, the ends are precision ground and cut, the copper halide is inserted into the tube and the windows are installed. The tube is then placed on a vacuum station
and pumped down for several hours. Once the tube has reached vacuum, a small quantity of buffer gas is introduced to facilitate the conduction of the high voltage arc between the electrodes.
The tube is then heated with electrical heaters to melt the copper halide into the dimples along the bottom. Once this is completed, the tube is fired with an extra heavy duty power supply and the high reflector [mounted directly to the tube] is aligned. This means that no realignment of the optics is required when the tube is changed. The tube is allowed to "cook” for some hours to remove any remaining impurities within.
The Spectronika tubes have an almost unlimited shelf life as they do not suffer from the "gas clean up" typical of Ion lasers, as there is no pressurized gas to seep into the walls of the bore - which in this case, is glass rather than ceramic. The amount of copper available for lasing and the gradual erosion of the copper electrodes during operation impose the limit on
life span of the tube by the high voltage arc within the tube.
The laser is an integrated unit with tube and power supply in one unit. Inside the laser, the tube is actually mounted in an oven to keep it at the approximately 350 to 450 C needed to vaporize the copper halide. There is a preliminary heater used during the start up cycle to pre-heat the tube, and a precision heater to keep the tube at the correct operating temperature during lasing - both are digitally controlled for precise temperature regulation. The laser takes about 10 minutes to warm up to full power and is cooled with 4 small muffin fans so is virtually silent in operation. The system is ruggedly designed so that even in the event of a power failure, it will not be damaged by lack of fan cooling.
Tube Change:
A detailed page with the illustrated procedure
for changing the tube in a Spectronika CuBr laser is available HERE.
ACCESSORIES
Beam
Collimator:
Compresses beam 2.3 times to allow use with higher speed,
large aperture scanners or in other applications where a smaller
beam diameter is desirable.
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Type: Galilean Beam Collimator
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Max. clear aperture input: 28 mm
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Beam collimating: 2.3 x
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Optical axis length: 55-56 mm
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External diameter: 36 mm
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Weight: 60 gr.
Example: After collimating of our CVL standard 14-15 mm output beam we have
beam parameters as follows:
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Diameter: 6.1-6.5 mm
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Divergence: 2.6 mrad (full angle)
Safety Goggles:
Spectronika offers a line of laser safety
goggles that are designed to attenuate specific lines as well as broadband
goggles. For more information,
click HERE.
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