PowerChip NanoLaser
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
NanoLaser uses a new generation of microchip exhibiting a ten fold increase in
energy per pulse compared to the existing NanoLaser product line. The PowerChip
NanoLaser 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 NanoLaser
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
NanoLaser stability and good beam quality with a simple, efficient
and compact design.
Compact
Industrial Laser
The PowerChip NanoLaser 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
NanoLaser is an easy to use, hands-off laser.
Many
Applications
With high peak power output in the IR, visible and UV, the PowerChip
NanoLaser is an excellent tool for material processing, 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 20 to 100 mW
Energy /pulse from 50 to 10 µJ
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