A wavefront sensor is an optical metrology device that quantifies deviations of a light wavefront from an ideal reference. Using quadriwave lateral shearing interferometry (QWLSI), the sensor captures both phase and intensity information across a grid of measurement points. This enables accurate reconstruction of optical aberrations, beam quality, and focus errors. The VIS-NIR Phasics SID4 model operates seamlessly from visible to near-infrared wavelengths, providing high spatial resolution and phase sensitivity for applications like beam characterisation, optical system alignment, and adaptive optics feedback. Data is transferred via Gigabit Ethernet to software for real-time processing, mapping, and analysis

High Sensitivity and Precision

Equipped with a high-resolution sensor and QWLSI technology, this wavefront sensor achieves < 2 nm RMS phase resolution and absolute accuracy of ~10 nm RMS. It captures fine aberrations with extreme fidelity—critical for optical metrology and high-precision alignment in photonics and laser systems.

Broad Spectral Coverage (VIS-NIR)

With spectral range spanning 400 – 1100 nm, the sensor works across visible and near-infrared applications without the need for calibration between wavelengths. This achromatic performance simplifies multi-wavelength testing in research and industrial settings.

Robust Phase & Intensity Mapping

By simultaneously sampling phase and intensity over 182 × 136 measurement points, it reconstructs detailed wavefront maps in real time. This enables comprehensive diagnostics of optical aberrations, focal quality, and laser beam uniformity.

Real-Time Operation and High Frame Rates

With fast acquisition up to 60 fps and real-time processing at 10 Hz, dynamic systems, adaptive optics loops, and beam drift can be monitored and corrected quickly.

Compact, Easy Integration

The small form factor and Gigabit Ethernet interface make this sensor straightforward to incorporate into existing optical benches, test stations, and automated measurement workflows.

Self-Referenced and Vibration-Insensitive

Unlike some interferometric setups that require isolated environments, this sensor’s self-referenced design tolerates ambient vibration, simplifying installation in industrial labs and shop floors.

Versatile Data Output and Software Support

Wavefront maps, Zernike decompositions, and beam quality metrics can be visualised and analysed via dedicated software, enabling precise quality control and documentation.

Laser Testing and Beam Characterisation

Accurate wavefront measurements are vital for high-power laser testing, beam quality evaluation, and adaptive optics calibration. The sensor’s broad spectral range and high resolution ensure reliable characterisation of laser output and wavefront aberrations.

Optics and Photonics Metrology

Used for lens testing, optical system alignment, and aberration mapping in photonics manufacturing, the sensor enhances precision in optical coatings, lens assemblies, and complex optical devices.

Adaptive Optics and Astronomy

In adaptive optics systems for telescopes and high-resolution imaging, real-time wavefront feedback is essential for correcting atmospheric or mechanical distortions.

Material Inspection and Quality Control

Optical component factories use wavefront measurements to assess surface form, figure errors, and manufacturing consistency in lenses, mirrors, and transparent substrates.

Semiconductor and Laser Manufacturing

Wavefront sensors support alignment and testing of projection optics, wafer steppers, and optical scanners, ensuring high throughput and minimal defect rates.

Biomedical Imaging and Microscopy

Wavefront sensing enhances high-NA microscopy systems and corrective optics, improving focus and image quality in biomedical research and live cell imaging.

Defense and Aerospace Optics

Precision optical testing for navigation systems, imaging payloads, and laser communication modules benefits from high sensitivity and real-time wavefront analysis.

United Spectrum Instruments brings cutting-edge wavefront sensing solutions to India with deep technical expertise and application support. We assist customers in configuring, integrating, and optimising advanced optical metrology systems like the Phasics wavefront sensor to meet demanding industrial and research requirements. From on-site installation and operator training to comprehensive after-sales service and calibration support, our team ensures maximum system performance and uptime. Partnering with United Spectrum Instruments positions your lab or production line to achieve superior optical measurement accuracy, improved product quality, and faster time-to-insight in photonics, laser manufacturing, and precision optics applications.