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 Laserayin Tekhnika has great capabilities for laser crystals growth and optical components
manufacturing, for their treatment and coating. In the crystal growth department we use the
method of horizontally directed crystallization (HDC), which allows to obtain homogeneous
monocrystals of a very large size (20mm x 70mm x 150mm). Therefore we can provide laser
components for high power solid-state lasers. We realize crystal growth
under computer control, which provides real-time control and optimization of the growth process.
This state-of-the-art equipment was developed and produced in our department of electronics.
Our priority is the production of rare-earth doped
yttrium-aluminium-garnet (YAG) laser materials, since they are the most useful in the world today.
Laserayin Tekhnika produces the following rare-earth doped YAG laser rods and slabs:
Nd:YAG,
Nd:Ce:YAG,
Yb:YAG,
Ho:YAG, Tm:YAG, Pr:YAG,
undoped YAG and Sapphire.
All crystals produced by Laserayin Tekhnika have excellent
Parameters: optical quality,
low scattering losses, high output and damage threshold and etc.
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Nd:YAG is one of the widespread materials for flash lamp and diode pumped solid- state lasers.
These crystals have all necessary properties for receiving high-quality laser rods and slabs.
Nd:YAG lasers at 1064 nm have wide application in such areas as R&D, industry, medicine, geodesy
and ranging, remote sensing and LIDARs, and can be used for other special purposes as well.
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In double doped Nd:Ce:YAG crystals Cerium are chosen as sensitizer for Nd3+ ions because of
its strong absorption in UV spectral region at flash lamp pumping and efficient energy transfer to the
Nd3+ excited state. As a result - thermal distortion in Nd: Ce:YAG is appreciably less and the output
laser energy is greater than that in Nd:YAG at the same pumping. Therefore it is possible to realize
high power lasers with good beam quality. Lasing wavelength at 1064 nm, laser damage threshold
and thermal conductivity of the Nd: Ce:YAG crystals are the same as for Nd:YAG.
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Yb:YAG crystal is the most useful laser material for diode-pumped solid-state lasers. Since its
absorption peak wavelength is around 940 nm and its bandwidth (18nm) is much larger than that of
the Nd:YAG, it can be easily pumped by InGaAs laser diodes or diodes arrays with reduced thermal
management requirements for diode lasers. Yb:YAG rod and slab lasers emit at 1030 nm close to
1064 nm, have high average output power and excellent beam quality, are rugged and long lifetime.
Therefore Yb:YAG crystal at 1030 nm is a good substitute for a commonly used Nd:YAG crystal at
1064 nm for high average power laser applications, and its second harmonic at 515 nm - for a large
volume Ar-ion laser, which emit at 514 nm.
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Owing to their excellent quality undoped YAG crystals find wide
applications as optical components for UV-IR spectral region, particularly for applications, which
require high temperature and high energy density. Undoped YAG crystals are available with
non-birefringence and with high optical homogeneity and surface finished quality. The mechanical
and chemical stability of undoped YAG is comparable to sapphire crystal.
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