PowerChip Laser
Diode
Pumped,
Passively Q-switched, High Energy Microchip Laser
Diode pumped solid state lasers
usually
produce high peak power pulses by using active modulation of a high
gain medium,
such as Nd:YVO4, resulting in complex and expensive systems.
Passively
Q-switched microchip laser technology, manufactured by Nanolase for
more than
four years, dramatically reduces the size and cost of such lasers. The PowerChip Laser uses a new generation
of microchip exhibiting a ten fold
increase in
energy per pulse compared to the existing Laser product line. The PowerChip Laser is an all solid state
laser which produces in excess of 100
kW peak
power in the infrared and more than 20 kW in the UV with unparalleled
compactness, simplicity and ease of use.
Simple
Yet
Efficient UV Laser
The higher energy of the PowerChip Laser
is obtained with a new, larger microchip cavity consisting of a layer
of Cr4+
doped YAG saturable absorber embedded monolithically in a YAG crystal,
with
doped and un-doped regions, and mirrors deposited at both ends. When
pumped with
a high power diode bar, this cavity emits short pulses with high peak
power,
without the costly and complicated use of electronics necessary to
drive
traditional Q-switched lasers. The diode bar pump beam is shaped to
optimize the
pumping density. The longer cavity supports a larger laser mode
oscillation,
resulting in a more efficient use of the pump, producing high energy
pulses. The
output of the laser cavity is a train of sub-nanosecond pulses with 100
kWatts
of peak power at a repetition rate in excess of 1 kHz in the infrared.
Since the
conversion efficiency to generate green and UV wavelengths increases
with the
square of the incoming IR beam power, green and UV output can be
efficiently
generated from a passively Q-switched laser with high peak power. This
efficiency allows us to place the non-linear crystals outside the
cavity, in a
single pass configuration, giving the PowerChip Laser
stability and good beam quality with a simple,
efficient
and compact design.
Compact
Industrial Laser
The PowerChip Laser is
designed as an
OEM product aimed at working in different and changing environments. A
rugged
mechanical design and a hermetically sealed laser head protect the
optical
components from dust, fumes, condensation and vibrations. These
features bring
an inherent stability to the laser, eliminating the need for complex
and costly
electronic feedback loops. A new microprocessor-based power supply
controls all
the laser operating parameters, the temperature of the components, the
diagnosis
and electronic protection circuits, and can be easily interfaced to a
computer.
The driver electronics are included in the laser head and only need a
24V DC
supply. Thermal management of the electronics and of the heat generated
by the
pump diode and the two TE Coolers accomplished by a built-in air-cooled
heatsink
allowing the laser to work as a stand-alone unit. Whether used in an
OEM system
or in a scientific environment, the PowerChip Laser is an easy to use,
hands-off laser.
Many
Applications
With high peak power output in the IR, visible and UV, the PowerChip Laser is an excellent tool
for material processing,
Marking, biomedical, LIDAR, MALDI,
LIBS and fluorescence applications in which its beam quality with high
repetition rate will prove superior to Nitrogen lasers. It is a good
general
purpose laser for scientific laboratories with the inherent simplicity
and
ruggedness of an industrial laser. However, it is in OEM applications
that the PowerChip
NanoLaser demonstrates its full potential as a dependable
work horse
replacing lower performance technologies.
Performance
Average power from 3 to 200 mW
Energy /pulse from 10 to 50 µJ
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