QTec® – Reinventing vibrometry
QTec® reinvents laser vibrometry by eliminating the root cause of noise delivering superior optical sensitivity, enabling high-fidelity measurements on all surfaces. In order to achieve this, QTec vibrometers use an innovative multi-path interferometer utilizing the highest quality signal of each path to reach the best results. This patented technology is combined with the well-proven infrared Xtra sensor design for faster, easier measurements and a consistent result.
The new, patented and highly innovative technology QTec® from Polytec significantly improves the signal-to-noise ratio (SNR). QTec® resolves even the finest details in the measurement signal, facilitating a straightforward post-processing. QTec® improves the results in almost any measurement and is particularly beneficial for engineered surfaces that move laterally or rotate. The average count can be drastically reduced to achieve the same SNR and measures are independent of the surface properties.
On an optically smooth surface, the reflected laser light is returned without loss to the photo detector. In the real world measurements are often carried out on surfaces that are optically rough. Here the light is no more reflected but scattered containing dark and bright speckles and the laser point starts looking grainy. This pattern changes with the particular perspective of an observer. This causes changes and occasionally no light return at the photo detector. These effects can cause broadband noise and unwanted dropouts with optical measurements.