(PM)VOA Variable Optical Attenuators

Active Area Diameter 0.18 mm; Max. Dark Count Rate 25-2,500 c/s; Photon Detection Efficiency 60%-75%; Max. Count Rate 40 M c/s; Dead Time 22, 50 ns; Pulse Width 10, 30 nsExcelitas’ SPCM single photon counting modules are self-contained modules that meet the low-light-level detection demands of confocal microscopy, fluorescence, luminescence, and TCSPC, particle sizing and quantum communications.SPCM modules use a unique silicon avalanche photodiode (SLiK) with a 180 µm diameter circular active area, achieving peak photon detection efficiency greater than 65% to even 75% (depending on model) with unmatched uniformity over the full active area.The photodiode is both thermoelectrically cooled and temperature controlled, ensuring stabilized performance despite ambient temperature changes. Operating temperature range has been increased and the module will function with case temperatures between +5 ˚C and +70 ˚C.SPCM single photon counting modules are ideal for laboratory and OEM use and offer market-leading photon detection efficiency (PDE), low after-pulsing, high linear dynamic range, and low dark counts.Excelitas' newly enhanced SPCM-AQRH single photon counting module detects single photons over the wavelength range of 400 nm to 1064 nm with performance parameters superior to other solid state or vacuum-tube based photon counters.The SPCM-AQRH achieves >70% peak photon detection efficiency at 650 nm. A TTL-level pulse is generated for each photon detected and the signal is available at the BNC connector at the rear of the module. The module comes as standard with a free-space window to the APD, with FC fiber adapter, C-mount or tube cage mount bracket/adapter options.Recent electronic circuit enhancements have reduced the minimum dead time to less than 25 ns, thereby increasing linearity and improving the dynamic range of the module. Timing resolution of the module was also improved significantly. The SPCM-AQRH has internal protection circuitry that protects the avalanche photodiode and the module electronics from damage due to accidental overload from exposure to ambient lighting.The Excelitas SPCM-AQRH-WX-TR is a single photon counting module of the latest product generation, specifically selected and performance-optimized for timing resolution. This family of –TR modules is designed to support applications in time-correlated single photon counting (TCSPC), fluorescence lifetime measurements and fluorescence lifetime imaging microscopy (FLIM).The SPCM-AQRH-WX-TR uses a specially selected SLiK silicon avalanche photodiode with timing resolution better than 250 ps while maintaining peak photon detection efficiency (PDE) of more than 75% at 650 nm over a 180 µm diameter active area. While some performance parameters, in particular afterpulse probability, are traded off against the optimized timing performance, other performance parameters of the standard SPCM-AQRH, such as outstanding uniformity, overload protection, temperature stability and linearity, are still maintained by this timing-optimized module.The Excelitas SPCM-NIR is a single photon counting module specifically selected and performance-optimized for the near infrared wavelength spectrum. This NIR spectrum enhanced device is designed to support long range LiDAR, quantum communication and microscopy, as well as many other applications.The SPCM-NIR uses a specially selected SLiK silicon avalanche photodiode with peak single photon detection efficiency typically better than 73%. This module achieves enhanced red and NIR sensitivity while maintaining such other performance parameters of the standard SPCM-AQRH, such as outstanding uniformity, overload protection, temperature stability and linearity.The SPCM-AQ4C is a four-channel photon counting module capable of detecting single photons of light over the wavelength range from 400 nm to 1060 nm. Each channel is independent from the others.The SPCM-AQ4C uses a unique silicon avalanche photodiode (SLiK) with a peak photon detection efficiency exceeding 60% at 650 nm and an improved circuit with a peak count rate >4M c/s for short bursts of time on all four channels and a count rate of 1.5 M c/s for continuous operation. There is a "dead time" of 50 ns between pulses.The module requires +2 V, +5 V, and +30 V power supplies. The output of each channel – a TTL pulse that is 4.5 V high (into a 50 Ω load) and 25 ns wide – is available at the card edge behind the circuit board. Each TTL pulse corresponds to a detected photon. All input and output signals are available at the card connector.Applications: Particle Sizing & Characterization; Confocal Microscopy; Photon Correlation Spectroscopy; Quantum Cryptography; Astronomical Observation; Optical Range Finding; Adaptive Optics; Ultra-sensitive Fluorescence; Flow Cytometry; Wind LiDAR Part Number Photo Sensitive Diameter Maximum Dark Count Rate Photon Detection Efficiency @ 650 nm Max. Count Rate before Saturation Dead Time Pulse Width Downloads SPCM-AQRH-10 0.18 mm 1500 c/s 65% 40M c/s 22 ns 10 ns Datasheet SPCM-AQRH-11 0.18 mm 1000 c/s 65% 40M c/s 22 ns 10 ns Datasheet SPCM-AQRH-12 0.18 mm 500 c/s 65% 40M c/s 22 ns 10 ns Datasheet SPCM-AQRH-13 0.18 mm 250 c/s 65% 40M c/s 22 ns 10 ns Datasheet SPCM-AQRH-14 0.18 mm 100 c/s 65% 40M c/s 22 ns 10 ns Datasheet SPCM-AQRH-15 0.18 mm 50 c/s 65% 40M c/s 22 ns 10 ns Datasheet SPCM-AQRH-16 0.18 mm 25 c/s 65% 40M c/s 22 ns 10 ns Datasheet SPCM-AQRH-XX-TR 0.18 mm 100-1500 c/s 65% 40M c/s 22 ns 10 ns Datasheet SPCM-NIR-XX 0.18 mm 100-1500 c/s 75% 40M c/s 22 ns 10 ns Datasheet SPCM-AQ4C fibered 500 c/s 60% >2M/channel c/s 50 ns 30 ns Datasheet C30902SH-TC 0.475 mm 2500 c/s >5% - - - - C30902SH-DTC 0.475 mm 350 c/s >5% - - - - Please note that Excelitas products are available from us only in Denmark, Finland, Iceland, Norway, and Sweden. 

Digital Variable;Single Mode;1300/1550 nm;FC/PC

250-2500 nm; Reflectance Value 2-99%; Reflectance Tolerance at 600 nm ±2%-±5%; Reflective Area 50.8x50.8-610x610 mm; Dimensions 57x57x17-616x616x17 mmLabsphere’s Spectralon® diffuse reflectance targets are ideal for laboratory, production and field applications that require long exposure to harsh environmental conditions such as field validation experiments performed to collect remote sensing data. Because of the diffuse reflectance properties of Spectralon, these targets maintain a constant contrast over a wide range of lighting conditions.Spectralon diffuse reflectance targets are available in plates up to 610 x 610 mm, in white or gray material, and are mounted in a rugged anodized aluminum frame. Calibration data from 250 to 2500 nm, every 50 nm, is supplied with the targets. Calibration data is traceable to the National Institute of Standards and Technology (NIST). All targets are thermally and chemically stable and easily cleaned.Targets larger than 610 x 610 mm can be constructed and calibrated, and custom targets of various reflectance values are also available up to 3 x 3 m. Please contact the AMS Technologies reflectance target experts to discuss your customized diffuse reflectance target solution.Key Features:Durable and WashableWavelength Range: 250 to 2500 nmVarious Reflectance Values Available: 2% to 99%Reflectance Tolerance at 600 nm: ±2% , ±3% , ±5%Flatness Range over 350 to 760 nm: ±4% , ±5%Impervious to Harsh EnvironmentsThermally and Chemically StableReflective Area: 50.8 x 50.8 to 610 x 610 mmDimensions Mounted: 57 x 57 x 17 to 616 x 616 x 17 mmApplications: Backlight Illuminators; Environmental Test Targets; Laser Targets; Optical Reflectors; Remote Sensing Targets; Proximity Sensors; Light/Sensor CompensationPlease note that Labsphere products are available from us only in Denmark, Finland, Iceland, Italy, Norway, and Sweden.

Highly Lambertian; 250-2500 nm; Reflectance Factor 2-99%; Reflective Area Ø 31.75, 50.80 mm; Dimensions Ø38.1x14.0, Ø60.45x15.2 mmLabsphere’s Spectralon® diffuse reflectance standards can offer the highest diffuse reflectance values of any known substance. These durable, chemically inert standards can have typical reflectance values ranging from 2% to 99% and are spectrally flat over the UV-VIS-NIR spectrum.All Spectralon materials are optically flat to ±4% over the range of 250 to 2500 nm and ±1% over the photopic region of the spectrum.Spectralon diffuse reflectance standards are highly Lambertian, with Spectralon SRM-99 reflectance material being the most Lambertian reflector available for use over the wavelength range from 250 to 2500 nm.All reflectance calibration tests are performed in the Reflectance Spectroscopy Laboratory at Labsphere. The standards used in these tests are directly traceable to the National Institute of Standards and Technology (NIST).Spectralon diffuse reflectance standards are available individually and in sets, consisting of a diffuse white standard and a selection of diffuse gray standards. Each standard is supplied with complete diffuse reflectance data from 250 to 2500 nm, every 50 nm. All standards are housed in a durable delrin holder with a protective cover.Diffuse reflectance standards are available in sets of four or eight standards in either 31.75 or 50.80 mm diameters. A set of four standards includes one each of the following reflectance values: 99%, 75%, 50% and 2%. A set of eight standards includes one each of the following reflectance values: 99%, 80%, 60%, 40%, 20%, 10%, 5% and 2%.Diffuse reflectance standards are also available individually (31.75 or 50.80 mm diameter, reflectance values 99%, 80%, 75%, 60%, 50%, 40%, 25%, 20%, 10%, 5% and 2%) or even on custom order with reflectance properties to meet your specific needs. Please contact the AMS Technologies reflectance standard experts to discuss your customized diffuse reflectance standard solution.Key Features:Calibrated Spectralon Standards, Accredited Under NVLAP ISO 17025 Lab Code 200951-0Highly LambertianDurableChemically InertWavelength Range: 250 to 2500 nmSpectrally Flat Over the UV-VIS-NIR SpectrumOptically Flat to ±4% Over Wavelength Range, ±1% Over the Photopic Region of the SpectrumReflectance Factor: 2% to 99%Reflective Area: 31.75, 50.80 mm DiameterDimensions: 38.1 mm Dia. x 14.0 mm Height, 60.45 mm Dia. x 15.2 mm HeightApplications: Densitometers; Integrating Sphere Systems; Optical Equipment; Photographic Equipment; Reflectometers; Remote Sensing InstrumentsPlease note that Labsphere products are available from us only in Denmark, Finland, Iceland, Italy, Norway, and Sweden.

Pigtail style inline variable;Polarization Maintaining;1310/1550 nm;Miniature Housing;FC/APC;FC/APC