SPAD Single-Photon InGaAs/InP Avalanche Photodiodes APD

C30927 Series: Number of Elements 4; Photo Sensitive Diameter 1.5 mm; Responsivity 15-62 A/W; Capacitance 1 pF; NEP 9-16 fW/√Hz; Spectral Noise Current per Element 0.5 pA/√HzExcelitas’ C30927 family of avalanche photodiode (APD) arrays and quadrants utilize the double-diffused “reach-through“ structure. This structure provides ultra-high sensitivity at 400 nm to 1000 nm.The C30927 quadrant structure has a common avalanche junction, with separation of the quadrants achieved by segmentation of the light entry p+ surface opposite the junction. With this design, there is no dead space between the elements and therefore no loss of response at boresight.The C30927EH-01, -02 and -03 APD arrays and quadrants are optimized for use at wavelengths of 1060, 900, and 800 nm respectively. Each device type will provide high responsivity and excellent performance when operated within about 50 nm of the specified wavelength.The C30985E is a 25-element silicon avalanche photodiode (Si APD) consisting of a double diffused “reach-through” structure.The standard versions of the Excelitas C30737 silicon APD array series are available with 16 or 64 elements and provide high responsivity between 500 nm and 1000nm. The standard versions are available either in a compact surface-mount “top-looking” leadless package (C30737MA) or in a BGA type “top-looking” package (C30737GA).Both packages are ideally suited for high volume, cost-effective applications where a high gain APD is required. The leadless SMD and BGA packaged parts are RoHS-compliant and suitable for reflow soldering.The C30737MH series of LLC SMD packaged EPI APDs has the smallest footprint SMD packages.The C30737GA-02-64-90 silicon avalanche photodiode array (Si APD array) provides high responsivity between 500 nm and 1000 nm and is available in a BGA-type “top-looking” package. The C30737GA is ideally suited for high volume, cost-effective applications where a high gain APD is required. Its leadless BGA package is RoHS-compliant and suitable for reflow soldering.Key Features C30927 Series:High Quantum EfficiencyHermetically Sealed PackagesMonolithic Chip With Minimal Dead Space Between ElementsSpecific Tailored Wavelength ResponseRoHS CompliantCustomization Available Upon RequestApplications C30927 Series: Spectroscopy; Particle Detection; Spot Tracking and Alignment Systems; Adaptive Optics; LiDAR (Light Detection and Ranging)Please note that Excelitas products are available from us only in Denmark, Finland, Iceland, Norway, and Sweden. 

GH Optics introduces its advanced LWIR Ge-free Optical Windows, a cutting-edge solution designed for long-wave infrared (LWIR) applications in the 8–12 μm spectral range. Engineered using proprietary chalcogenide glass substrates from the GHW series, these windows offer a high-performance alternative to traditional germanium optics. By eliminating the need for germanium, GH Optics delivers a cost-effective, lightweight, and thermally stable solution without compromising on optical quality.These optical windows are enhanced with either DLC (diamond-like carbon) or HD (hard film) coatings, combined with AR (anti-reflection) layers, achieving transmittance rates exceeding 94%. This makes them ideal for demanding infrared systems where clarity, durability, and cost-efficiency are paramount.Product ParametersSubstrate MaterialGe-free Chalcogenide glass GHWDiameter Tolerance+/- 0.1 mmThickness Tolerance+/- 0.1 mmParallelism≤ 3 arcminChamfer0.2 mm x 45°Surface Quality60/40-80/50Flatness< 5 fringesCoatingDLC/AR or HD/ARKey FeaturesGermanium-Free Design: Utilizes GH Optics’ proprietary GHW chalcogenide glass, eliminating reliance on expensive and supply-sensitive germanium.High Transmittance: Achieves >94% transmittance in the LWIR band (8–12 μm), ensuring superior signal fidelity for infrared imaging and sensing.Advanced Coating Technology: Available with DLC or HD coatings plus AR layers, providing excellent scratch resistance, environmental durability, and minimized reflection losses.Thermal and Mechanical Stability: Offers robust performance across varying environmental conditions, making it suitable for field-deployed systems.Cost Optimization: Reduces overall system costs while maintaining high optical performance, ideal for scalable industrial and research applications.ApplicationsLWIR Ge-free Optical Windows are optimized for a wide range of infrared technologies, including:Infrared Thermal Imaging: Enhances image clarity and system reliability in surveillance, automotive night vision, and industrial inspection.Photoelectric Detection Systems: Improves sensitivity and accuracy in scientific instrumentation and remote sensing.Environmental Monitoring: Suitable for gas detection and spectroscopic analysis in harsh environments.Defense and Aerospace: Offers lightweight, durable optics for UAVs, targeting systems, and infrared countermeasures.Medical and Industrial Diagnostics: Enables precise thermal profiling and non-invasive diagnostics.What's Next?GH Optics continues to innovate in the field of infrared optics, expanding its portfolio of germanium-free solutions to meet the evolving demands of global industries. The LWIR Ge-free Optical Windows represent a significant step forward in sustainable, high-performance infrared technology.For researchers, engineers, and procurement specialists seeking reliable, cost-effective alternatives to germanium optics, GH Optics provides a compelling solution backed by deep expertise and rigorous quality standards.Contact our sales team today to request a quote, discuss customization options, or learn more about how LWIR Ge-free Optical Windows can enhance your infrared systems.