The unit is designed to measure the thermal diffusivity and thermal conductivity of the plates, thin films, membranes thickness 0,01-2 mm with laser flash method in the temperature range from -100 to 250 0C
Contactless method requires minimal sample preparation, is suitable for measuring materials with high thermal conductivity (2400 W / m * K and above).
The method is based on measuring the propagation time of a heat wave, created by a laser pulse from one side of the film or plate to the opposite side. The heat source is a short pulse Nd: YAG laser, and the passage of the heat wave is defined by a high-speed HgCdTe infrared detector, which measures the temperature of the other side of the sample:

Specifications Nd:YAG laser.
Wavelength |
1.064 ìêì. |
Pulse energy (max) |
75 mJ |
Pulse duration |
10±3 íñ |
Pulse repetition frequency |
1 Hz |
Parameters of the IR detector
Operating temperature |
-198 0Ñ |
Operating speed |
300 ns |
The wavelength of maximum sensitivity |
10.0 um |
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