Modulo Uno
The Modulo Uno is a laser interferometer featuring a streamlined version of our rugged Multi-Channel Random Quadrature (MCRQ) optical design.
Description
Streamlined and Versatile Laser NDT Inspection All Surface Types
The Modulo Uno is a laser interferometer featuring a streamlined version of our rugged Multi-Channel Random Quadrature (MCRQ) optical design. Unlike its big brother the Quartet which uses two detector arrays to register the vertically and horizontally polarized components independently, the Modulo Uno is fitted with a single detector. But it isn’t just a mini quartet. Because the probe beam does not need to be split in half, the Modulo can operate using a lower powered laser. This makes the instrument not only less expensive to build but allows for testing on sensitive materials such as composites (without a beam chopper) and ideal for Bio-medical applications.
Robust & Versatile
The Modulo does not require high accuracy optical components or positioning, making it exceptionally rugged.
Fiberized Optical Head
A versatile fiberized optical head is easily mounted to fit a variety of measurement conditions and can be set-up for a wide-range of stand-off distances.
Precision
The Modulo produces both an analog and digital signal proportional to surface displacement.
High Sensitivity on all Surface Types and Materials
A detector array together with high transmission optics result in high sensitivity. The Modulo produces a stable, demodulated signal even when processing a highly speckled beam. Measurements can be performed on any kind of surface, including rough, porous, rusted and mirror-like.
Rapid Inspection
Efficient electronic processing allows for measurement speeds up to meters per second (with rectified demodulation).
Not Wavelength Dependent
The Modulo can be fitted with a range of internal laser wavelengths ranging from visible to infrared.
Specifications
MCRQ Technology: The idea behind Multi-Channel Random Quadrature was to develop a laser-ultrasound technology with a robust, compact design and a large depth-of-field capable of functioning effectively in a wide range of environments without loses in sensitivity, including on rough surfaces. With support from the National Science Foundation and NASA, we developed a novel interferometric design. By collecting and processing a multitude of speckles, the Modulo is fully functional in environments which would otherwise be unsuitable for most other laser ultrasound instruments.
| NESD (Noise Equivalent Surface Displacement) | The NESD varies based on the material composition and measurement setup. At 30mW and 1064nm with a stand-off distance of 100mm on an Aluminum target, the NESD = 22 ∙ 10−6 𝑛𝑚Τ 𝐻𝑧 . |
| Standard Detection Bandwidth | 440K – 20M Hz |
| Laser Output | 30 – 100 mW |
| Laser wavelength | 532nm (Visible), 1064nm (IR) |
| Fiber | Multimode / Length does not affect performance |
| Spot diameter on sample | 50µm to 1.5mm (depend on stand-off & wavelength) |
| Optical stand-off | From 70mm to a few meters |
| Diameter of collecting aperture | 2” (50mm) for standard optical head |
| Analog Outputs | Calibrated output – 100mV/nm Direct output, Calibration level and DC level |
| Digital Output | Sampling Rate 125 Ms/s Resolution 8 Bits Ethernet Output Rate 1Gbit/s |
| Options | 2D scanning set-up including PC, software, and X-Y translations |
| Demodulation Dimensions | 400 x 170 x 165 mm |
| Optical Head Dimensions | 65 x 85 x 170 mm |
| Demodulation Weight | 6.5 kg |
| Optical Head Weight | 0.75 kg |
Documentation
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