Conductively cooled laser gain medium module

The laser gain medium module integrates different types of laser crystals (YAG, YAP, YLF, YVO4, etc.) with a specially designed high thermal conductivity material heat sink, which are welded and packaged as a whole through a special process. This is designed to replace traditional mechanical press contact and direct water cooling methods.

Category:

Product Description

The laser gain medium module integrates various laser crystals (YAG, YAP, YLF, YVO4, etc.) with a specially designed high-thermal-conductivity material heatsink through a special welding process, aiming to replace traditional mechanical press contact and direct water cooling methods. This method effectively improves the contact between the crystal and the heatsink, reduces the contact thermal resistance between the two, improves heat dissipation efficiency, and reduces the thermal lensing effect of the crystal; it also avoids the extra stress caused by mechanical pressure, reduces depolarization loss, improves the optical-to-optical conversion efficiency, and overcomes problems such as reduced spot quality.

■ Advantages of conduction-cooled laser gain medium modules:

Good contact between the laser crystal and the heatsink, high and effective heat dissipation efficiency

Low welding stress, no additional stress introduced, reduced depolarization loss

Eliminates the mechanical structure for pressing the crystal, which is beneficial for miniaturization of the laser in terms of both weight and volume

■ Specifications and technical indicators:

Specifications can be customized according to customer needs

■ Main technical indicators of the product:

Item	Parameter
Change in crystal extinction ratio before and after welding	≤5dB (measurable for crystal rods with diameter ≥4mm or crystal slabs with thickness ≥4mm)
Wavefront distortion of the crystal after welding	≤0.25λ/inch (measurable for crystal rods with diameter ≥4mm or crystal slabs with thickness ≥4mm)
Spot condition after parallel light passes through the module	After passing through the crystal light-transmitting surface, the transmitted spot is free of bending or deformation within 3m.
Module sealing	Innoslab and other water-connected modules, no water leakage under 0.3MPa water pressure after welding.

Keyword:

Bonded laser crystal