Infrared Laser Vibrometry – Measure on all Surfaces!
The short-wave infrared (SWIR) laser source installed in the Nova series enables measurements without surface treatment even on the most difficult surfaces with a high signal-to-noise ratio (SNR), be it deep black, incandescent metal or glass.
Higher Laser Power
The wavelength of 1,550 nm used allows an output power up to 10 mW, being ten times higher compared to HeNe systems. Nevertheless, maximum eye safety with laser protection class 1 is given.
Photodetectors in this wavelength range have an efficiency of more than 98%. In conjunction with the higher laser power, the signal level is 20 dB higher than that of conventional laser Doppler vibrometers.
With just a single longitudinal laser mode, the sensitivity is independent of changes in the measuring distance. The immediate operational readiness of the device after switching on and stability against fluctuations in the ambient temperature are further advantageous properties.
Benefits of the Optomet Vibrometers
Further properties common to all Optomet vibrometry systems such as universal digital signal processing, real portability or intuitive hardware and software are described in more detail in the product-overview.