The role of wavefront sensors on telescopes
SEBI RT1000 and other sensors play a fundamental part in research
When we think of telescopes, it’s common to imaging the imposing structures that we can find in observatories, equipped with large lenses and mirrors. However, a telescope doesn’t rely only on this main object, but on a complex optical system composed of different elements that guide and shape the light to form a precise image. To ensure the quality and performance of this system, wavefront sensors play an essential role.
Large telescopes are delicate tools, that work thanks to the coordination of a series of lenses, mirrors, lasers, and other instruments that can be arranged in a variety of configurations. This system is them supported on a carefully designed structure to not only hold its weight, but also to ensure it has the mobility needed to study the sky around it.
The aforementioned instruments are the devices that allow them to obtain valuable information from the light coming from distant stars, devices such as wavefront sensors or equipment used in interferometry. The Southern European Observatory’s Very Large Telescope is one of the most outstanding examples of the latter category, as it’s capable to guide and combine the light obtained from its four telescope units to build a virtual telescope of great size, using the science of interferometry to study stars in much higher level of detail than it would be possible with a single unit.
Many telescopes also have a number of auxiliary optical elements capable of covering a wide range of applications, such as correcting the path of the incoming light or errors in its wavefront phase, like deformable mirrors. Several also include internal metrology systems, some simple and designed for the maintenance of mirrors and other elements that help guide the light to form an image, while others have more advanced laser solutions with much higher performance.
Wavefront phase sensors are one of the main metrology tools applied in observatories. These devices have been closely linked to astronomy from the beginning, as they were developed precisely to overcome aberrations caused by the Earth’s atmosphere. In this context, wavefront sensors perform critical functions, ranging from assessing the quality of the equipment to the detailed characterization of its components.
An example of such sensors is Wooptix’s SEBI RT1000, a compact device based on the WFPI technology. Designed to ensure accuracy in advanced optical systems, this sensor can check the correct alignment of lenses to the highest degree of detail, and detecting any manufacturing errors that could compromise image quality. These functions are essential for obtaining accurate astronomical data, and their absence would be a significant limitation for any observatory.
Wooptix’s sensor stands out in the market thanks to its innovative WFPI technology, which enables the detailed reconstruction of the trajectory of light from only two images. This feature gives it great versatility and, together with its compact design, allows it to be integrated into various systems. In addition, its 1000 x 1000 pixel resolution and real-time capture capability at 30 FPS provide high-precision data with a wide dynamic range, facilitating observations at the scale of micrometres and nanometres.
It is a highly versatile waveform sensor, capable of easily adapting to different experimental and industrial purposes. Its unique features allow it to fulfil metrology functions, and to characterize both lenses and lasers in real time to detect critical deformities. With increased lateral resolution, it can also be applied at high frequencies far beyond the range of conventional microlens sensors.
Wooptix keeps a close relationship with the astronomical community, since its origins are linked to research conducted at the Observatorio del Teide. This commitment to astronomy continues, with technologies designed to optimize the performance of telescopes and contribute to the advancement of knowledge of the universe.
Author: Daniel Cuartero
About Wooptix
Wooptix is a pioneering company in the development of wavefront-based metrology technology, with a strong focus on semiconductor manufacturing and advanced research. Their cutting-edge solutions are designed to address the critical challenges faced in semiconductor production, offering precision and speed in the measurement of materials and surfaces at a nanometric scale. Wooptix’s solutions improve quality control, reduce defects, and increase efficiency in semiconductor production lines. The company currently offers two key products:
– Phemet®: An advanced metrology system specifically tailored for the semiconductor industry. Phemet® allows for the inspection and characterization of semiconductor surfaces with nanometric resolution, enhancing process control and helping to detect imperfections that could affect the final product. It is designed to improve the yield and precision of semiconductor manufacturing processes.
– SEBI® RT1000: Areal-time wavefront phase sensor that delivers critical data for Research & Development in the semiconductor field. It also provides precise material and surface characterization, enabling semiconductor companies to evaluate and fine-tune their manufacturing processes with unprecedented accuracy. The SEBI RT1000’s ability to measure with high precision makes it an invaluable tool for advancing semiconductor research and improving production standards.
With a growing presence in Europe, the US, and Asia, Wooptix collaborates closely with leading semiconductor manufacturers to integrate its technologies into their production workflows. Through innovation in optical metrology, Wooptix continues to push the boundaries of semiconductor manufacturing, helping the industry meet the ever-increasing demands for precision and efficiency.