Articles

Crystal Growth Technology

Thermal Technology's crystal growing tools provide turn-key laboratory and production solutions for oxide crystal growth. With a broad range of crystal growth equipment and process knowledge, Thermal Technology offers systems for popular crystal growing methods, including:


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90kg LED-grade Sapphire

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Model K1 Sapphire Crystal Grower
Produces up to 90kg LED-grade boule

Large sapphire boules for 2", 4" and 6" cores, with 8" core possible


Czochralski

Czochralski Nd:YAG

Model 7215

Model 7215-CIB Czochralski Crystal Grower
Capacity: 115mm dia. x 200mm long


APPLICATIONS

Window and Substrate Applications:
  • Sapphire (Al2 O3)
  • Lithium Niobate (LiNbO3)
  • GGG (Gd3Ga5O12)
  • Calcium Flouride (CaF2)
Laser Rod Applications:
  • Ti: Sapphire (Ti:Al2O3)
  • Neodymium-doped YAG (Nd:Y3Al5O12)
  • Nd:YVO4
  • ErYb:YSGG

From the laboratory to the production floor, Thermal Technology provides:

  • Precision Crystal Grower Equipment
  • ADC (Automatic Diameter Control)
  • Leading Edge Crucible Technologies
  • Hot Zone Design Expertise

CRYSTAL GROWTH TECHNOLOGY

Thermal Technology’s crystal growth equipment provides the two most important parameters necessary for critical growth: stability and control. Both are necessary to achieve consistency, repeatability and uniformity – the keys to successful crystal growth in the laboratory and in production.

Stability provides the crystal grower with a known and constant environment for demanding crystal growth. Stability assures uniform, tightly defined temperatures and thermal gradients for consistent melts and zone refining. Stability requires well-controlled gaseous or vacuum environments. Stability in crystal growth demands smooth, highly constant, vibration-free motions with large and dynamic ranges, programmable first and second derivatives and multi-axis configurations – yet all must be controlled.

Control is achieved through Thermal Technology’s computer system interface which holds temperatures precisely where they are set and initiates changes quickly and smoothly to new values with minimal overshoot. The motion system must provide pull rates that are highly consistent in both time and space from moment to moment and from week to week. Positional accuracy must be maintained through the complete draw cycle to assure consistent and repeatable results from the crystal growth system.

Whether Czochralski, Kyropoulos, Bridgman or top-seeded solution growth, Thermal Technology provides you with a complete, integrated and successful marriage of the finest, most advanced methods in crystal growth technology with the proven performance of Thermal Technology’s furnaces and controls.


A partial list of Thermal Technology’s crystal growth capabilities includes:

Kyropoulos: Sapphire, titanium doped sapphire

Czochralski Technique: Barium sodium niobate, bismuth germanium oxide, calcium molybdate, lithium fluoride, lithium germanium oxide, lithium niobate, lithium tantalate, magnesium fluoride, potassium chloride, strontium barium niobate, Nd:YAG, sapphire and silicon.

Bridgman Technique: Calcium fluoride, cadmium telluride, gallium arsenide, magnesium fluoride, silver gallium selenide, silver gallium sulfide.

Top-Seeded Solution Growth: Beta barium borate, lithium borate, potassium titanium phosphide.


IMAGE GALLERY

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to enlarge

Model K1
Sapphire
Crystal Grower

Crystal Grower Model 7004-CI

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Model 7004-CI
Crystal Grower


Specifications

Crystal Grower Model 7004-CI

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Model 7004-CI
Crystal Grower
(Interior View)

Specifications

Crystal Grower Model 7215-CIB

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Model 7215-CIB
Czochralski
Crystal Grower


Specifications

Crystal Grower Model 7215-CIB

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to enlarge

Model 7215-CIB
Czochralski
Crystal Grower

(Close-Up View)
Specifications

SGGG Crystal

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SGGG Crystal

Sapphire Crystal

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Sapphire Crystal

Lithium Niobate Crystal

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100mm diameter
Lithium Niobate Crystal

Sapphire Crystal

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100mm diameter
Sapphire Crystal

GTAT K1 Grower product sheet
click for downloadable sales sheet

Press Releases - February 2011, December 2010

All specifications are subject to change.
Final quotation will be the governing document in all cases.
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