Imaging Cameras & Sensors – Wavefront Sensors
Visible – Near Infrared (VIS-NIR) (400 – 1100 nm) High Resolution Infrared Wavefront Sensor
In optical metrology, where precision defines success, the SID4-HR Wavefront Sensor by Phasics stands out as a gold standard. Designed for high-accuracy wavefront and intensity measurement in the visible-Near IR spectrum (400–1100 nm), the SID4-HR leverages Phasics’ patented QuadriWave Lateral Shearing Interferometry (QWLSI) technology to deliver real-time, single-shot, nanometric wavefront analysis.
Now available in India through United Spectrum Instruments, the SID4-HR is a powerful tool for laser diagnostics, optical testing, adaptive optics, and optical system alignment across scientific research, industrial metrology, and defence R&D environments.
UnderstandingVisible - Near Infrared (VIS-NIR) (400 - 1100 nm) High Resolution Infrared Wavefront Sensor
The SID4-HR Wavefront Sensor VIS – NIR (400 – 1100 nm) is a high-resolution optical metrology system optimised for visible and near-infrared applications. Powered by Phasics’ patented quadriwave lateral shearing interferometry (QWLSI®) technology, it delivers fast, quantitative phase measurements with unmatched precision. Covering the 400 – 1100 nm spectral range, it is ideal for characterising lasers, optics, and imaging systems. Its compact, robust design integrates seamlessly into laboratory or industrial environments, making it a trusted tool for adaptive optics, microscopy, optical testing, and quality control where precision and repeatability are critical.
Technical Specifications
| Parameter | Value |
| Wavelength Range | 400 – 1100 nm |
| Sensing Technique | QuadriWave Lateral Shearing Interferometry (QWLSI) |
| Phase Accuracy | < λ/100 rms |
| Spatial Resolution | ~27.6 µm |
| Phase Sampling | 182 x 136 (~24,000+ points) |
| Phase Resolution | < 2 nm RMS |
| Absolute Accuracy | ~10 nm RMS |
| Frame Rate | Up to 60 fps |
| Real-Time Processing | Up to 10 Hz (full-resolution) |
| Interface | GigE (Gigabit Ethernet) |
| Dimensions | 62 x 64 x 94 mm³ |
| Weight | ~450 g |
Key Features and Advantages
QWLSI® Technology
Patented interferometry providing quantitative phase measurements with high accuracy.
VIS – NIR Coverage (400 – 1100 nm)
Optimised for a broad spectral range, covering both visible and near-infrared wavelengths.
High Dynamic Range
Captures strong aberrations and subtle optical phase variations simultaneously.
Fast Acquisition Speed
Supports real-time monitoring of dynamic optical phenomena.
Robust & Compact Design
Lightweight, alignment-free, and easily integrable into diverse setups.
Comprehensive Data Outputs
Generates wavefront maps, MTF, and PSF for detailed optical analysis.
Advantages:
Provides high-resolution wavefront sensing across the VIS–NIR spectrum
Accurately characterises both lasers and incoherent light sources
Enhances optical system performance with real-time feedback
Compact, plug-and-play design reduces complexity in integration
Widely used in adaptive optics, microscopy, and laser diagnostics
Delivers superior reliability for industrial quality assurance testing
Detects phase errors invisible to conventional interferometers
Trusted by research labs and industries worldwide for precision optical metrology
Applications Across Industries
Aerospace & Defence
Supports adaptive optics development, laser testing, and optical alignment for mission-critical systems.
Automotive & EV Manufacturing
Validates imaging systems, optical sensors, and laser processing tools.
Medical & Biomedical Research
Optimises microscopy, ophthalmology systems, and biophotonics instrumentation.
Semiconductor & Photonics
Ensures accuracy in photonic device testing, laser beam shaping, and lithography optics.
Research & Development Centres
Delivers advanced optical metrology tools for universities and scientific institutions.
Laser Manufacturing & Integration
Provides beam characterisation and optical diagnostics for laser production and system integration.
The SID4-HR Wavefront Sensor VIS – NIR redefines precision metrology, offering unmatched measurement accuracy and adaptability across research and industrial applications.
Why Choose United Spectrum Instruments?
United Spectrum Instruments is the authorised distributor of SID4-HR Wavefront Sensors in India, providing world-class solutions for optical metrology.
Genuine Phasics SID4-HR VIS – NIR systems with full manufacturer warranty
Expert consultation for lasers, photonics, biomedical, and semiconductor applications
Pan-India installation, training, and after-sales service
Seamless integration support for laboratories, R&D centres, and industrial setups
Competitive pricing with reliable customer support
By partnering with United Spectrum Instruments, Indian researchers and industries gain access to state-of-the-art wavefront sensing technologies that ensure precision, compliance, and innovation.
FAQs
What types of light sources can SID4-HR measure?
It supports both coherent (e.g., lasers) and incoherent (e.g., LEDs, broadband) light in the 400–1100 nm range.
Is the SID4-HR suitable for pulsed laser measurements?
Yes. Its single-shot acquisition allows accurate measurement of transient and unstable pulses.
How does SID4-HR differ from Shack-Hartmann sensors?
SID4-HR offers higher spatial resolution, better sensitivity, single-shot capability, and wider light compatibility, all in a more compact form.
Can I integrate it into an adaptive optics system?
Absolutely. It supports real-time feedback for deformable mirrors and integrates with AO systems like OASys or custom setups.
What software tools are provided?
Phasics provides a complete GUI-based analysis suite plus SDKs for Python, MATLAB, LabVIEW, and C++.
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FAQs
What types of light sources can SID4-HR measure?
It supports both coherent (e.g., lasers) and incoherent (e.g., LEDs, broadband) light in the 400–1100 nm range.
Is the SID4-HR suitable for pulsed laser measurements?
Yes. Its single-shot acquisition allows accurate measurement of transient and unstable pulses.
How does SID4-HR differ from Shack-Hartmann sensors?
SID4-HR offers higher spatial resolution, better sensitivity, single-shot capability, and wider light compatibility, all in a more compact form.
Can I integrate it into an adaptive optics system?
Absolutely. It supports real-time feedback for deformable mirrors and integrates with AO systems like OASys or custom setups.
What software tools are provided?
Phasics provides a complete GUI-based analysis suite plus SDKs for Python, MATLAB, LabVIEW, and C++.
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