Single Photon Avalanche Diode (SPAD)

Accurate and fast detection of single photons

SAAZ’s SPAD sensors offer extremely high sensitivity, fast timing, and precise photon counting at low light level conditions from visible to shortwave infrared wavelengths. Our SPAD sensors offer high photon detection efficiency with low noise, and fast timing resolution, enabling long range detection of fast-moving objects with high precision.

This breakthrough technology allows for detection of ultra-weak return signals—extending range, lowering laser power demands, and reducing optics size. Combined with low-noise electronics and spectral flexibility, our SPAD systems are optimized for next-gen applications in defense, space, and commercial applications.

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Our Offerings

Explore the features that make our SPAD sensor solutions a powerful choice for low-SWaP, high-performance sensing:

Single Photon Sensitivity

Our SPAD sensors operating in Geiger mode, offer single photon sensitivity and low timing jitter suitable for precise TOF distance measurements.

Multi-Wavelength Operation

Available for Visible (532 nm), Near-IR (1064 nm), and SWIR (1550 nm) wavelengths, covering a wide range of applications.

Quantum Cryptography

InGaAs SPADs are critical components in quantum key distribution (QKD) systems, especially for fiber-based quantum cryptography operating at telecom wavelengths (1310 nm or 1550 nm).

Integrated SPAD Modules

Custom-developed easy to use SPAD modules packaged with electronics for precise time-of-flight measurements.

Flexible Development Models

Choose from full-custom, semi-custom arrays, or modular options to suit your operational and budgetary goals.

Applications

See how SAAZ SPAD technology can enable the next generation of sensing:

Long-Range LiDAR

SPAD sensors offer long-range (10’s of Km) object detection due to single photon sensitivity and timing resolution.

Autonomous Navigation

Integrated into autonomous ground vehicles and drones, our sensors offer real-time obstacle detection in cluttered or low-light environments.

Methane Detection

InGaAs SPAD sensors detect return photons at the single-photon level, enabling mapping of methane leaks from oil/gas infrastructure.

Frequently Asked
Questions

SPAD LiDAR detects light at the single-photon level, offering superior sensitivity, lower power needs, and faster imaging compared to conventional systems.
Our sensors operate at 532 nm (Visible), 1064 nm (Near-IR), and 1550 nm (SWIR), providing broad application flexibility.
Yes. Our systems are engineered to minimize size, weight, and power—ideal for UAVs, handhelds, and space-based systems.
By detecting even the faintest returns, SPAD LiDAR extends operational range while reducing laser and optics requirements.
Absolutely. We offer full-custom and semi-custom SPAD LiDAR modules designed around your technical and operational goals.

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Ready to Sense at the Speed of Light?

SAAZ SPAD LiDAR delivers photon-level precision and real-time depth—giving your mission a decisive advantage in performance, power, and scale.

→ Connect with our SPAD engineering team today to start your custom solution.

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