Technology 2017-07-03T20:57:51+00:00

Laser Vibrometer Technology and Benefits

OptoMET’s Laser Doppler Vibrometry (LDV) is a highly accurate and reliable non-contact vibration measurement technique utilizing sophisticated, laser-based technology to provide customers the best data quality possible.  LDV’s faster, better data means quicker decision making and more reliable solutions to vibration problems which reduces time to market and improves product quality.  Structures of nearly any size can be studied and virtually all vibration challenges can be overcomed when testing is conducted with OptoMET’s SWIR Digital Laser Doppler Vibrometer technology.

One of the principle advantages of Laser Doppler Vibrometry is that it avoids mass loading of the test object which produces results more accurate than using traditional contact vibration sensors like accelerometers, which can change resonance frequencies and damping values.  Individual measurement locations can be investigated or many locations can be measured sequentially for more comprehensive, full-field dynamic characterization.


Structural dynamics testing like Experimental Modal Analysis (EMA) using LDV can provide better Finite Element Model calibration and updating.  Also, high channel count of EMA tests using traditional sensors become very costly when considering the requirement for individual data acquisition channels per sensor.  Scanning Laser Doppler Vibrometry produces better results in a more cost effective manner.

OptoMET’s SWIR Digital Laser Doppler Vibrometers have extremely high dynamic range and sensitivity meaning measurements can be conducted on extremely small vibration levels as well as large vibrations due to shock or low frequency phenomenon.  Along with variable working distances, LDVs provide customers the sensitivity and flexibility needed to meet various testing requirements.

Laser Doppler Vibrometer’s non-contact technique and high frequency capability makes it ideal for Non-Destructive Testing (NDT), Non-Destructive Evaluation (NDE) and Non-Contact Stress & Strain investigations especially those targeting the identification of damage, delamination and cracks in material samples.

Standardized testing incorporating LDV’s for end-of-line systems and production quality control can benefit from repeatability, accuracy and efficiency gains to get products tested faster and catch errors before they reach the customer.

Environmental conditions rarely effect LDV measurements.  Measurements can be conducted on extremely hot or cold test surfaces, through transparent objects like vacuum or environmental chamber glass or in fluids.

OptoMET Laser Doppler Vibrometers are used in a variety of scientific, industrial and medical applications.