Imaging Cameras & Sensors – Wavefront Sensors
Short-Wave Infrared (SWIR) Wavefront Sensor
In advanced optics and photonics, Shortwave Infrared (SWIR) applications are gaining prominence across defence, aerospace, telecommunications, and scientific imaging. Ensuring precise wavefront integrity in this spectral region requires tools that offer both accuracy and adaptability. Enter the SID4-SWIR Wavefront Sensor from Phasics – a compact, high-resolution interferometric sensor specifically designed to characterise wavefronts in the 0.9–1.7 µm range.
Now available in India through United Spectrum Instruments, the SID4-SWIR brings Phasics’ patented QuadriWave Lateral Shearing Interferometry (QWLSI) to the SWIR domain, delivering single-shot, nanometric wavefront and intensity measurement capability.
Understanding Short-Wave Infrared (SWIR) Wavefront Sensor
The SID4-SWIR Wavefront Sensor is an advanced optical metrology solution optimised for the shortwave infrared (SWIR) spectrum, typically 900 – 1700 nm. Using Phasics’ patented quadriwave lateral shearing interferometry (QWLSI®) technology, it delivers precise, quantitative phase measurements for SWIR lasers, optics, and imaging systems. Compact, alignment-free, and robust, it provides real-time characterisation of aberrations, beam quality, and optical performance. The SID4-SWIR is ideal for defence, semiconductor, and photonics industries, as well as research institutions requiring high-accuracy SWIR metrology for system validation, R&D, and industrial quality assurance.
Technical Specifications
| Parameter | Value |
| Spectral Range | 900 – 1700 nm (SWIR) |
| Technique | QWLSI |
| Phase Resolution | < λ/100 RMS (~10 nm typical) |
| Spatial Sampling | ~27 µm |
| Total Data Points | ~20,000+ |
| Frame Rate | Up to 60 fps |
| Interface | GigE (Ethernet) |
| Dimensions | 62 × 64 × 94 mm³ |
| Weight | ~450 g |
Key Features and Advantages
QWLSI® Technology
Patented interferometry enabling quantitative phase measurements in the SWIR spectrum.
SWIR Spectral Range (900 – 1700 nm)
Specially designed for accurate analysis of shortwave infrared lasers and optical systems.
Wide Dynamic Range
Captures both strong optical aberrations and fine phase variations with precision.
Fast Acquisition Speed
Delivers real-time monitoring for dynamic SWIR processes and laser tuning.
Compact & Robust Design
Easily integrates into lab benches, production setups, and field systems.
Advanced Data Outputs
Generates wavefront maps, MTF, and PSF for comprehensive system characterisation.
Advantages:
Provides highly accurate wavefront sensing in the SWIR range
Detects optical defects invisible to traditional interferometers
Real-time feedback improves laser alignment and optical performance
Compact design simplifies integration into complex systems
Enhances R&D in defence, semiconductor, and photonics applications
Ensures repeatability and compliance in industrial quality control
Robust, alignment-free setup reduces maintenance and downtime
Trusted by global research centres and industries working with SWIR optics
Applications Across Industries
Defence & Security
Supports adaptive optics, SWIR imaging calibration, and surveillance system testing.
Semiconductor & Photonics
Ensures quality assurance in SWIR device testing and optical component characterisation.
Aerospace Applications
Monitors SWIR-based optical systems for navigation, imaging, and communications.
Medical & Biomedical Research
Optimises SWIR imaging systems for diagnostics, tissue studies, and biophotonics.
Research & Development Centres
Provides universities and labs with advanced tools for SWIR optical studies.
Industrial Quality Control
Delivers reliable metrology for SWIR optics used in inspection and manufacturing.
The SID4-SWIR Wavefront Sensor is designed to redefine precision in shortwave infrared metrology, combining high accuracy, flexibility, and robustness for advanced scientific and industrial applications.
Why Choose United Spectrum Instruments?
United Spectrum Instruments is the authorised distributor of SID4-SWIR Wavefront Sensors in India, providing expert consultation and reliable support.
Genuine Phasics SID4-SWIR systems with full manufacturer warranty
Industry expertise in defence, photonics, semiconductor, and biomedical sectors
Pan-India installation, training, and after-sales technical service
Seamless integration for laboratory, R&D, and industrial applications
Competitive pricing with dependable customer care
With strong expertise in photonics and optical metrology, United Spectrum Instruments ensures Indian industries and research institutes access world-class SWIR wavefront sensing solutions that guarantee accuracy, compliance, and innovation.
FAQs
What makes SID4-SWIR suitable for pulsed SWIR laser measurements?
Its single-shot capability allows capturing full wavefront and intensity profiles of fast, transient pulses without averaging.
Can the SID4-SWIR work with fibre-coupled SWIR sources?
Yes, the sensor can characterise light from fibre lasers, SLEDs, and other fibre-coupled IR sources with proper collimation.
How is it different from visible-only wavefront sensors?
The SID4-SWIR is tailored for the SWIR spectrum (900–1700 nm), using a sensitive InGaAs detector and optics designed for this band.
Can I use this sensor for adaptive optics?
Yes. It integrates seamlessly into adaptive optics loops and provides high-speed feedback for real-time correction.
What software tools are included?
Phasics provides a complete analysis GUI and SDKs for Python, MATLAB, LabVIEW, and C++, allowing full control and integration.
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FAQs
What makes SID4-SWIR suitable for pulsed SWIR laser measurements?
Its single-shot capability allows capturing full wavefront and intensity profiles of fast, transient pulses without averaging.
Can the SID4-SWIR work with fibre-coupled SWIR sources?
Yes, the sensor can characterise light from fibre lasers, SLEDs, and other fibre-coupled IR sources with proper collimation.
How is it different from visible-only wavefront sensors?
The SID4-SWIR is tailored for the SWIR spectrum (900–1700 nm), using a sensitive InGaAs detector and optics designed for this band.
Can I use this sensor for adaptive optics?
Yes. It integrates seamlessly into adaptive optics loops and provides high-speed feedback for real-time correction.
What software tools are included?
Phasics provides a complete analysis GUI and SDKs for Python, MATLAB, LabVIEW, and C++, allowing full control and integration.
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