The RoHS compliant 1936-R and 2936-R optical power and energy meters, replacing 1936-C and 2936-C, are one of the most sophisticated optical power meters available in the market.
The 818-SL/DB Silicon (Si) Photodetector is supplied with a NIST traced calibration report that details individual detector responsivity measured with and without attenuator. Exclusive OD3 attenuator technology extends the calibrated optical dynamic range of our photodiode sensor heads by three decades. The serial numbers for the detector and the attenuator are matched to ensure NIST traceability. The 10 mm clear aperture with the cross hair will improve the detector alignment to the input optical beam more accurately and help avoid detector overfilling. This model includes a BNC/DB15 calibration module. The adapter contains the detector calibration data, model number, serial number and calibration date for seamless operation. Also available are a variety of accessories such as collimating lens assemblies, fiber optic adapters, and a bare fiber adapter, and a 1 inch optic holder. Note that Model 818-SL/CM is available offline only. Model 818-SL is no longer available.
Detector Type Standard Material Silicon Sensor Size Ø11.3 mm Spectral Range 400 - 1100 nm Maximum Measurable Power 2.0 W Maximum Measurable Power Without Attenuator 4 mW with 1830-R and 1936-R, 2.5 mW with 843-R, 1919-R, and 841-PE-USB Maximum Power Density 30 W/cm2 Maximum Power Density without Attenuator 3 W/cm2 Maximum Pulse Energy with Attenuator 5 µ Maximum Pulse Energy Without Attenuator 5 n Calibration Uncertainty without Attenuator ±1% @ 400-940nm, ±4% @ 941-1100 nm Calibration Uncertainty With Attenuator ±1% @ 400-940nm, ±4% @ 941-1100nm Linearity ±0.5 % Uniformity ±2 % Rise Time ≤2 µs Attenuator OD3, Detachable Connector Type DB15 RoHS Compliant Minimum Detectable Power 20 pW (1936-R/2936-R), 100 pW (1830-R, 843-R, 1919-R, 841-PE-USB), 5 nW (1918-R) Clear Aperture 10.3 mm
