By Innofocus Photonics Technology Pty Ltd
The biggest advantage of using a spatial light modulator (SLM) for aberration correction is that it can dynamically update the phase diagram (basic frequency is around 60Hz, while customization can go up to 500Hz). Innofocus's nanofabrication system have unique technical advantages in terms of light field modulation. For example, our software system can generate phase maps for aberration correction in real time, based on the processing depth calculated after locating the material surface, and quickly update them on the spatial light modulator to achieve optimal compensation for each processing depth. Furthermore, since the laser focal spot runs along a specific designed trajectory in 3D space during the processing, it may move continuously at different depths. We designed AI-assisted software system to realize real-time compensation according to the depth where the focal spot is located during the continuous processing, to ensure quality and consistency. This depends on the system configuration. For example, Innofocus' standard SLM achieves a maximum power of 800 mW/cm2. Thus, depending on the SLM irradiated area, the maximum power is 1.06 W. If set higher customised SLMs, 2 W/cm2 can be achieved with a maximum power reaching 2.654 W. The central zero stage of SLM can be resulted in two ways, depending on the scenarios: 1. Direct blocking method: This is achieved by directly blocking the zero level and only allowing the +1 level to pass through. This method is convenient and suitable for most scenarios. 2. Direct blocking method: This is achieved by directly blocking the zero level and only allowing the +1 level to pass through. This method is convenient and suitable for most scenarios.
