Analog Output Photoreceivers (InGaAs APD)

Key Product Features

• High-quantum-efficiency low-excess-noise Deschutes™ APD detectors

• Very-low-noise series of detector configured with a transimpedance amplifier (TIA)

• Wide selection of detector diameters

• Robust hermetic package with in-package temperature sensor and thermoelectric cooler (TEC)

• Fiberoptic coupling available for many models

Allegro MicroSystems (Allegro) VOXTEL 产品咨询：上海伽太电子，185 0219 3480.

APDs (InGaAs)

Unlike common APDs, which have noisy avalanche gain, our custom-engineered, industry-leading advanced InGaAs APDs offer extremely low dark current and half the excess noise, providing superior range and false-alarm performance. These APDs are sensitive over the 950 – 1750-nm spectrum, including the eyesafe spectral region beyond 1300 nm.

Deschutes™ Series

Key Product Features

• Very low excess noise (k < ~0.2)

• Moderate gain (M < 20) and low dark current is optimal for low-bandwidth optical receivers where only moderate gain is required to overcome electronic noise

• Available with collection areas from 30 μm to 500 μm in diameter

Siletz™ Series

Key Product Features

• Ultra-low excess noise (k < ~0.02)

• High gain (M < 45), optimal for high-bandwidth photoreceiver applications where low-excess-noise gain is required to overcome electronic noise

• Industry’s leading performance for low bit error rate (BER) and low false alarm rate (FAR)

• Available with collection areas ranging from 30 μm to 500 μm in diameter

PIN Photodiodes (InGaAs)

Metolius™ Series

Key Product Features

• High quantum efficiency (QE > 95%), providing unsurpassed sensitivity and signal-to-noise (STN) performance

• Highly uniform response over areas as large as 3 mm in diameter

Answering the previously unmet need for a cost-effective eye-safe laser rangefinder (LRF), our new class of compact, eye-safe LRFs offers the highest performance at a fraction of the cost and is sufficiently small and lightweight for handheld, weapon-mounted, or unmanned vehicle integration. This new class of easy-to-operate, easy-to-program eye-safe LRF was custom-developed for use in high-performance consumer, commercial and industrial applications, and for integration with low-divergence diffraction-limited diode-pumped solid-state (DPSS) laser pulses, state-of-the-art InGaAs avalanche photodiode (APD) receivers, and custom CMOS readout circuits to achieve long ranging, even in harsh environmental conditions, with less laser power.

LRF Modules for Original Equipment Manufacturers (OEMs)

Our cost-effective compact LRF modules for original equipment manufacturers allow 1534 nm InGaAs APD laser ranging capabilities to be integrated quickly and efficiently into optical scopes and electro-optical systems. These turnkey LRF modules are easily software-programmed and reconfigured. They are calibrated at the factory for optimal operation over a wide temperature range and are rugged to harsh operating conditions.

These products are EAR 99 approved.

Key Product Features

• Eye-Safe: Class-1M, 1534 nm laser transmitters

• Simple: UART interface and flexible serial programming library

• High Precision: Better than 500 mm accuracy single-shot variance, even at long range

• High Beam Quality: Diffraction-limited beam, M² < 1.15

• Excellent Repetition Rate: Up to 10 Hz pulse repetition rate

• Long Lifetime: > 50 million shots

• Robust: Qualified to guns and other extreme environments

• Lightweight

Narrow-Profile LRF OEM Modules

LRF OEM Modules

LRF System-Integrator Kits

Our LRF System Integrator Kits give system designers a turnkey laser ranging solution for thermal, electro-optical, and optical scope integration. Each kit includes Voxtel’s ROX™ avalanche photodiode (APD) photoreceiver—which offers best in class sensitivity, enabling long standoff range performance with less laser pulse energy. The ROX photoreceiver is paired with Voxtel’s small-form-factor 1534 nm diode-pumped solid-state (DPSS) erbium-glass laser transmitter, programmable time-to-digital converter (TDC), and programmable controller board. The result is a compact, lightweight highly reliable ranging module with excellent performance.

These products are EAR 99 approved.

Key Product Features

• Turnkey: Integrated DPSS erbium-glass laser, high performance InGaAs APD, and programmable pulse processing electronics

• Low Excess Noise: Impact ionization engineered InGaAs APD

• Eye-Safe: Class 1, 1534 nm laser

• High Precision: 500 mm single pulse; 100 mm multi pulse

• Near Diffraction Limited Beam Quality: M² < 1.15 x diffraction limit

• Excellent Noise Equivalent Input (NEI): as low as 45 photons

• Low Power: < 1 mW with LRF disabled

• Long Lifetime: > 50 million shots

LRF System Integrator Kits Without Lasers

29 kW 4 ns LRF System Integrator Kits

48 kW 7 ns LRF System Integrator Kits

Scanned Lidar and Laser Ranging Photoreceivers (InGaAs APD)

Our laser ranging photoreceiver products—which include custom pulse detection and processing circuits—achieve state of the art sensitivity that enables reducing laser pulse energy requirements by a factor of at least 20 compared to PIN photodiode receivers and a factor of at least five compared to competitor APD photoreceivers.

To achieve the stable gain required for the highest sensitivity imaging capabilities of our APD photoreceivers—especially at higher temperature operation, where impact ionization would otherwise decrease, leading to unstable gain witnessed as noise—temperature is monitored thousands of times per second and APD bias is optimized by a microcontroller integrated into the TO-8 package.

To give system designers a turnkey laser ranging solution for thermal, electro-optical and optical scope integration, these photoreceivers are available with optional laser ranging control electronics to control a user-provided laser. The result is a compact, lightweight, highly reliable ranging module with excellent performance.

Key Product Features

• High gain, Low noise Photodetector: InGaAs APD

• Spectral Response: 950 to 1700 nm

• Noise Equivalent Power: < 0.2 nW (1534 nm; 20 ns pulse)

• Total Dynamic Range: 70 dB

• User Programmable Time Variable Threshold (TVT)

• Long Lifetime: 85,000 hours MTTF

• Robust: Proven in extreme environments

• Available with time of flight control electronics (see “System Integrator Kits” on Voxtel’s Laser Ranging Products page)

Our InGaAs APD detector arrays—which are offered in formats up to 1K x 1K—use backside illumination to achieve low capacitance, high speed, and low dark noise.

Key Product Features

• High Performance: Fabricated using Voxtel’s high-performance APD technologies

• Fast Optical Overload Recovery: Enabled by backside-illuminated mesa detector architecture

• Highly Uniform Response

• Good Radiation Tolerance

• Low-pixel-defect Count

• Custom pixel microlens arrays for increased fill factor

InGaAs APD Linear Arrays

Voxtel’s portfolio of linear-format avalanche-photodiode (APD) arrays are sensitive in the eyesafe spectral range beyond 1300 nm, making them ideal for scanned automotive, hyperspectral, and other lidar applications.

Key Product Features

• Low Capacitance: backside-illuminated InGaAs pixel elements

• Wide Spectral Response: 950–1720-nm wavelength response

• High Gain: Operation up to a multiplication gain of M = 75

• Low Excess Noise: Models available with McIntyre parameterization of keff = 0.03

• Customization: Custom devices available upon request. Custom readout integrated circuits (ROICs) available upon request

• Options: Microlenses optionally available