Single Crystal Growth

Common Challenges We Solve

CO₂ laser radiation is known to be an ideal heat source to create a localized melt zone, a so-called floating zone, for the growth of very pure single crystal oxide fibers. Stable thermodynamic conditions, and thus a stable CO₂ laser source, are essential for best results. The use of CO₂ laser radiation as heat source has two major advantages over other methods:

1. The wavelength of 10.6 µm is well absorbed by many relevant oxides.
2. The very high laser-induced local temperatures and gradients enable 60 times faster growth rates — mm/min instead of mm/h.

Access Laser’s CO₂ lasers are ideal for this application due to our industry-leading power stability and active control of the laser cavity length. Our technology can be integrated in a feedback loop to control and minimize fluctuations of the fiber diameter. In addition, our closed cavity CO₂ lasers guarantee consistent operation with little maintenance, which is highly appreciated by researchers and manufacturers around the world.

For more information on Single Crystal Growth with CO₂ Lasers, please check our Application Letter.