Flat Mirrors
 Flat mirrors find wide uses in
industrial laser systems, as well as medical, scientific and
research applications.
Copper based mirrors in
particular provide a rugged and durable mirror with good
reflectivity across a broad spectrum of the infrared. Our electroplated gold coating
offers good reflectivity and high damage resistance. They are widely used in CO2
laser beam delivery where their massive power handling ability
gives a long working life. Our mirrors are fitted to a 40KW
welding laser. For standard specifications click here
Aluminium mirrors are
lightweight, and ideal for scanning applications.
Silicon mirrors are always
used with a coating, such as Max R, phase retarder, and are
suitable for many infra red wavelengths. Although lightweight and stable
they have lower laser damage resistance compared to all metal
mirrors.
Molybdenum mirrors offer a
very hard, scratch resistant, mirror surface.
Unique manufacturing methods allow
cost effective supply of prototypes and small numbers of parts
without tooling or set up charges.
- Money and time can be saved by
having mirrors designed with locating flanges, mounting holes
and even water cooling built in.
- Mirrors from most metals, metal
alloys, and some non metal such as silicon are routinely
manufactured.
- Mirrors from 6mm to 150mm
diameter are available, as well as square, rectangular, and
other custom shapes.
- Repair and refurbishing of used
mirrors to their original specification is also available,
which can offer considerable savings.
 Curved Mirrors
Spherically curved mirrors are
commonly used in laser cavities and in laser beam expanders
for high power lasers.
- A large range of concave and
convex mirrors with radius of curvature from 5mm to 100 meters
are available.
- Spherical mirrors can often be
used in careful combination to give diffraction limited
results.
- Several designs for focus systems based on spherical
mirrors are available.
Cylindrical mirrors are used for
correcting astigmatic beams from slab discharge lasers and laser
diodes. A range of cylindrical
curvatures are available.
Curved mirrors with through holes
are useful in Raman spectroscopy and multi-pass cells. Surface form is maintained over
the entire surface.
Using spherical mirrors in
carefully optimized designs can offer large savings over aspheric
optics.
- A range of parabolic, elliptical
and hyperbolic mirror surfaces are available for applications
requiring an aspheric mirror.
Curved mirrors are available from a
wide range of materials and with various coatings. Max R
 Uncoated
metals such as copper and gold have excellent broad reflectivity
in the infrared, as well as useful reflectivity in the visible,
but there are occasions when even
tiny losses are a problem (such as in laser cavities), and an
enhanced coating is needed.
A series of thin film high and low
refractive index materials are deposited onto the mirror in a
vacuum chamber. This can boost the reflectivity
at the specified wavelength to greater than 99.9%.
Such high reflectivities need
sophisticated calorimetric measurement to ensure specifications
are met.
Laser Beam Products offers enhanced
metal reflectors for standard wavelengths such as 10.6
microns.
- Other coating properties such as
those with polarization sensitivity or dual wavelength
operation are possible.
MaxR coating offers excellent
resistance to the darkening effect of UV radiation in laser
discharges.
MaxR coating is available on either
copper or silicon substrate mirrors.
Water cooling is recommended for
resonator mirrors and copper is the material of choice.
Application Notes (PDFs):
Copper Mirrors vs. ZnSe Lenses for High Power Lasers
Applications:
CO2 lasers, Cut/Weld, Pulsed
Laser, ER:YAG, Infrared Assemblies:
Collimation, Focus Units,
Polarization, Beam Control Quality:
Interferometry, Polishing,
Calorimetry, Laser Damage Technical:
Choosing mirrors, laser damage,
specifications, cleaning mirrors, surface quality
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