Resistance heating type crystal grower

Resistance heating type pulling system (CZ method)

Resistance heating type pulling system

Description

This system is is the most common CZ (Czochralski) method crystal grower using the resistance heating .
Putting a seed crystal in the melt within the crucible, then grows the single crystal by pull-up and rotation. 

Our ADC (Automatic Diameter Control) system controls the crystal diameter automatically.

Application

LT/LN、GGG、LGS、Sapphire、YAG、NdYAG、YAP、NdYAP、LuAG、YbLuAG、NdCrGSGG、BGO、PM、YVO、LBO、BSO、LSO、CaF、Si etc.

Specification

ChamberCylindrical water-cooled double structure, vacuum-tight structure, ID1000X1400mm
Heat sourceHeater (carbon, such as KANTHAL) 
Heating capacityMain 70kW, bottom 60kW 
Heating temperatureMax. 2100℃
AtmosphereInert gas, vacuum
Vacuum exhaust systemOil diffusion pump + rotary pump
ControllerADC function
Data outputTemperature, crystal weight, each functional unit movement speed and position information, etc.
Safety circuit