Low Light Level Detection (L3D) analytical modules from Excelitas are designed for analytical, life science and biomedical applications. These user-friendly full modules are offered as a standard, commercial-off-the-shelf (COTS) product.
The HeliX™ Silicon Avalanche Photodiode (APD) Module and LynX Silicon Photomultiplier Module series are compact, easy-to-use, analogue low-light-level detection (L3D) modules employing Excelitas’ leading-edge Si APD and SiPM chips. The CIPRM Coherent InGaAs PIN Balanced Receiver Module incorporates two photodiodes and amplifiers for ultra-sensitive coherence laser radar and optical coherence applications.
The Helix™ APD module is in a hermetic TO package, mounted on a practical OEM based PCB which includes high-voltage power supply, temperature compensation, a low-noise transimpedance amplifier, APD bias monitor and micro-controller. With this compact voltage-output module, the preamplifier gain is optimized to obtain maximum dynamic range and linearity with the APD at gain adjustable operating voltage. It optimizes APD operation in key performance parameters such as higher sensitivity, and better signal-to-noise ratio across the 400 nm - 1100 nm wavelength range. Standard modules are available with the C30902EH or the C30954EH APDs.
The Lynx™ SiPM module is in a hermetic TO-8 package with thermoelectric cooler, a stable voltage power supply circuit, and a low noise transimpedance amplifier. This compact voltage output module has the preamplifier gain optimized to obtain maximum dynamic range and linearity with the SiPM at pre-set operating voltage. It outperforms other SiPM solutions in key performance parameters such as higher photon detection efficiency (PDE) and better signal-to-noise ratio across the full 400 nm - 900 nm wavelength spectrums.
In the CIPRM-1 balanced optical receiver Excelitas has the best features of high performance InGaAs photodiodes and low noise, high gain transimpedance amplifier to offer a practical solution to detect small changes above the interfering noise floor of incoming signal. The advantage is that the common optical noise is cancelled out. This receiver incorporates two low-noise photodiodes with well-matched responsivity in order to ensure a high common mode rejection ratio (CMRR). It has two single mode fiber optic inputs, an RF output, electrical supply inputs, and two photo-current monitor outputs. Module is also available with two FC receptacle inputs.
The CIPRM modules come in a robust casing with flange mounting holes for securing the module to working surfaces or platforms. Combined with a wide operating temperature range, the CIPRM can work in some of the toughest and harshest environments.
Excelitas also offer customized modules tailored to the needs of the customer. Depending upon customer requirements, modifications can include a different APD, optional calibration, bandwidth optimization, FC-connectorized packaging, and customized testing.