A new attenuator design for the 818 series detectors is implemented! 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.

The 818-IG/CM Low-Power Indium Gallium Arsenide (InGaAs)Photoetector is supplied with a NIST traced calibration report that details individual detector responsivity over the 800 to 1650 nm wavelength range. This model includes a BNC/8-pin mini-DIN calibration module that provides compatibility with legacy Newport power meters such as 1835/2835-C. The adapter contains the detector calibration data, model number, serial number and calibration date for seamless operation with a Newport legacy power meter. 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.

Model 818-IG/CM 

Detector Type InGaAs Spectral Range 800 to 1650 nm active Diameter 0.3 cm Material Indium Gallium Arsenide Power Density, Average Max w/ Attenuator 2 W/cm2 Power Density, Average Maximum w/o Attenuator 3 mW/cm2 Pulse Energy, Maximum - w/ Attenuator 0.35 µJ/cm2 Pulse Energy, Maximum - w/o Attenuator 0.35 nJ/cm2 Uniformity ±2 % Detector Active Area 0.071 cm2 Calibration Uncertainty 2% @ 800-900 nm, 2% @ 901-1650 nm Calibration Uncertainty, w/ Attenuator 5% @ 800-900nm, 2% @ 901-1650nm NEP 0.04 pW/v Hz Reverse Bias, Maximum 2 V Linearity ±0.5 % Connector Type 8-Pin Din.