MicroChip NanoLaser
Diode Pumped,
Passively Q-switched 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.
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The MicroChip NanoLasers contains a innovative passively Q-switched microlaser using a saturable absorber embedded monolithically in the laser medium, thereby avoiding the costly and complicated use of electronics necessary to drive traditional Q-switched lasers.The whole laser cavity consists of a one to two cubic millimeter crystal of Nd:Yag with a thin layer of Cr4+ doped Yag and two mirrors deposited at both ends. When pumped with a continuous wave diode laser, the output of the laser cavity is a train of sub-nanosecond pulses with 10 kWatts of peak power at a repetition rate of approximately 10 kHz in the infrared. |
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Simple, Yet
Efficient Green and UV Laser
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 MicroChip NanoLaser stability and good
beam quality with a simple, efficient and compact design. Several milliWatts of
average power at 266 nm or 355 nm can then be emitted from a very compact
package.
Compact
Industrial Laser
The MicroChip
NanoLaser is designed as an OEM product aimed at working in different
environments, the laser head includes a thermoelectric cooler to allow good
performance over a large range of temperature. The power supply drives the diode
laser current and stabilizes the diode temperature to 0.2ºC allowing stable
operation of the laser. This OEM driver includes diode protection circuits
against ESD and overheating, it has no external adjustment for trouble free
operation, all parameters are factory set. The very compact package includes an
AC/DC converter to operate directly from the wall plug voltage. The electrical
consumption of these lasers is less than 4
watts at room temperature and less than 10 watts at 40°C. These features bring
an inherent stability to the laser, eliminating the need for complex and costly
electronic feedback loops. CDRH models for laboratory use are also available.
Excellent Beam,
High Stability
The TEMoo beam of the collimated MicroChip
NanoLaser output is perfect for all applications that require beam focusing such
as marking and fluorescence measurements or propagation over long distances such
as ranging, Lidar and alignment. The inherent stability of the laser allows
superior pulse to pulse, repetition rate, and output power stability.
"Eye safe"
wavelength also < 500ps
Some applications, such as ranging,
benefits from high peak power, high repetition rate, and TEMoo laser output but
require Class I Eye safety. The NanoEyeSafe Laser is just that.
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Using a microchip emitting at 1.54mm, it allows high data rate acquisition and more accurate measurements. The "eye safe" microchip uses an innovative combination of materials and, like the Nd:Yag microchip, is also fabricated with a collective process for high volume/low cost production. |
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Many
Applications
MicroChip
NanoLasers, although rapidly pulsed (typically at 10 kHz), may be considered
quasi-cw (continuous wave) and, due to their small size, low cost, and superb
beam quality, suitable for many of the existing pulsed and cw applications
traditionally filled by air-cooled argon-ion lasers helium-cadmium lasers,
pulsed-nitrogen lasers, and actively Q-switched YAG 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 MicroChip
NanoLaser demonstrates its full potential as a dependable work horse replacing
lower performance technologies.
Typical
Performance
Average power from to 50 mW
Energy /pulse from to 6 µJ
Wavelength 1540,1064, 532, 355, 266 nm
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