PVMQ/PCQ HgCdTe (MCT) Infrared Detector Arrays

1-15 µm; Active Area 0.000625-16 mm²; Detectivity ≥9.0×106- 4.0×1010 cm·Hz1/2/W; Resistance ≤120-≤1,200 Ω; Package TO39, BNC, TO8, TO 66 Vigo System’s PC/PCI range of photoconductive detectors is based on the photoconductive effect. Infrared radiation generates charge carriers in the semiconductor active region decreasing its resistance. The resistance change is sensed as a current change by applying a constant voltage bias. The PC/PCI series devices are characterized by near linear current-voltage characteristics. The electric field in photoconductors is constant across the device. These components are based on sophisticated HgCdTe heterostructures for the best performance and stability and optimized for the maximum performance at λopt. Vigo System’s PC series features 1 µm to 12 μm HgCdTe uncooled, ambient temperature IR photoconductive detectors. The devices should operate in optimum bias voltage and current readout mode. Performance at low frequencies is reduced due to 1/f noise. The 1/f noise corner frequency increases with the cut-off wavelength. PC series devices are also available thermoelectrically cooled by two-stage (PC-2TE series), three-stage (PC-3TE series) or even four-stage (PC-4TE series) TEC structures, resulting in 1 µm to 14 μm (PC-2TE), 1 µm to 15 μm (PC-3TE) or 1 µm to 16 µm (PC-3TE) HgCdTe photoconductive detectors. These series are protected by a 3° wedged sapphire (wAl2O3, PC-2TE) or zinc selenide anti-reflection coated (wZnSeAR) window, preventing unwanted interference effects. The PCI series is optically immersed in order to further improve the parameters of the devices. This series’ cut-on wavelength is limited by GaAs transmittance (~0.9 μm). Corresponding to the PC series, PCI series components are also available either as 1 µm to 12 μm HgCdTe uncooled, ambient temperature IR photoconductive detectors or as 1 µm to 15 µm (PCI-4TE: 16 µm) HgCdTe photoconductive detectors that are thermoelectrically cooled by two-stage (PCI-2TE series), three-stage (PCI-3TE series) or even four-stage (PCI-4TE series) TEC structures, again with a 3° wedged sapphire (wAl2O3, PC-2TE) or wedged zinc selenide anti-reflection coated (wZnSeAR) window, preventing unwanted interference effects. For its range of PC/PCI HgCdTe (MCT) photoconductive detectors, Vigo System provides a broad range of selected line or configurable line infrared (IR) detection modules that integrate the IR photodetector with the preamplifier and – depending on the module series – also signal processing electronics, optics, heat dissipation systems and other components in a common package. Key Features: High Detectivity Low Speed High Stability and Reliability, Long Lifetime and MTBF 1/f Noise Corner Frequency fc: ≤10 kHz to ≤20 kHz Active Element Material: Epitaxial HgCdTe Heterostructure Optimal Wavelength λopt: 5.0 to 14.0 μm With or Without Immersion Microlens Technology Uncooled, Room Temperature Operation or Thermoelectrically Cooled (2-Stage, 3-Stage or 4-Stage) Detectivity D*: ≥1.9x107 to ≥4.0×1010 cm·Hz1/2/W (λpeak, 20 kHz), ≥9.0×106 to ≥2.0×1010 cm·Hz1/2/W (λopt, 20 kHz) Different Sizes of Active/Optical Area A(O): 25×25 µm² to 4×4 mm² Current Responsivity-Active (Optical) Area Length Product Ri(λopt)·L(O): ≥0.001 to ≥3.0 A·mm/W Time Constant τ: ≤2 ns to ≤20,000 ns Bias Voltage Active Area Length Ration Vb/L: ≤0.15 V/mm to ≤24.5 V/mm Resistance R: ≤120 to ≤1,200 Ω Active Element Temperature Tdet: ~195 to ~230 K (TE-cooled Versions) Different Acceptance Angles Φ: ~36° to ~124° Different Packages: TO39, BNC, TO8, TO 66 Different Infrared Windows: None, wAl2O3, wZnSeAR Wide Range of Dedicated Preamplifiers and Accessories Available Applications: Industrial; Medical; Automotive; Environmental; Laser Power Control and Calibration; Gas Analysis; Mid-IR Spectroscopy; Gas Leak Detection; Air Quality Analysis; Water Quality Control; Engine Emission Monitoring and Control; Fuel Quality Assessment; Analysis of Temperature Distribution; Railway Transport Safety; Plastic Sorting; Security and Defense

Beamsplitters are optical components splitting an incident light beam into two parts. Beam splitters take on many forms: cubes, plates, hexagons, pentagons, polarizing, non-polarizing (usually somewhere in between), narrowband, broadband, dielectric, air-spaced, metal, cemented, optically contacted (epoxy-free bonding), a.s.o. If you are looking for a customized beamsplitter that exactly meets your specific performance and cost requirements, please get in touch with the AMS Technologies beamsplitter experts. Our supplier LightMachinery is extremely experienced with specifying, designing and manufacturing custom beamsplitters using the company’s patented fluid jet polishing (FJP) technology that allows the adjustment of the beamsplitter’s shape and flatness to within a few nanometers. We are looking forward to discussing your customized beamsplitter solution! Together with our supplier LightMachinery, it is our job at AMS Technologies to help you sort out the specifications of your customized beamsplitter. Some of the key parameters to think about are wavelength range, polarization and physical size requirements. For instance, P polarization is much more inclined to transmit at large angles (in the 45° range). The challenge for coating designers is to adjust the transmission of the two polarizations to meet the specific requirements of your custom beamsplitter. Also, if the beamsplitter will be used inside an interferometer, you may need to consider path length and phase matching requirements. It is always good if you can explain how you will be using your beamsplitter, it can really help us to define out your requirements. Due to multiple requests for a very accurate beamsplitter, AMS Technologies is offering two standard LightMachinery precision cube beam splitters with angles good down to 1 arcmin and surfaces flat to λ/10. While the OP-5119 beamsplitter is suitable for the 400 to 900 nm wavelength range in the visible (VIS) spectrum, the OP-5120 beamsplitter is optimized for infrared (IR) wavelengths from 800 to 1750 nm. However, do not hesitate to contact AMS Technologies to discuss and specify your custom beamsplitter in detail!