The new diode source integrates high reliable 500W bars. The hermetical package is design to separate the liquid circuit and the active diodes. No liquid can be in touch with the diode avoiding major damage in case of water leakage. Electrical connectors as well as liquid connectors are attached in the back panel side. The diode emits from the front panel side through a IR-AR coated glass window. N² pressurization is requested to maintain low HR.
The source generates up to 100 kW power at 940 or 980 nm with a pulse width up to 3 ms. The components have been designed to highest possible efficiency which leads to a low power consumption, small spectral width and low heat generation. Diodes are collimated in the fast axe at a pitch of 800 µm (400 µm for 1ms pulse width). The source has 16 stacks, 10 to 20 bars each depending on the final power requested assembled with very low gap between each stack.
The source is cooled by standard water (not DI). The water circuit is physically separated from the diode housing which eliminates any risk of water leakage on stacks (included in QLD warranties). Low pressure N2purge is necessary when water temperature is below 20°C.
Thanks to the very low bar pitch a very high brightness (> 4MW/cm²/sr) is achieved without polarization coupling of stacks. It avoids optical losses and expensive components. Furthermore the module has a very small volume and safes space on the optical table.. All connectors are fixed on the back side of the source. Diodes are protected against humidity and dusty parts by a window with AR coating.