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The Newport 818-UV Low-Power Silicon Cylindrical Detector optics are designed to address the problems associated with measuring coherent light. In ordinary detectors, coherent light causes reading errors across the detector surface and measurements are more sensitive to thermal drift. This results in an additional, unreported 5% to 8% calibration uncertainty when making laser power measurements. Newport’s detector design eliminates these problems for stable, uniform detector response. Specifications. Spectral Range: 0.19–1.1 µm. Power, Average Max w/ Attenuator: 0.2 W/cm^2. Power, Average Maximum w/o Attenuator: 0.2 mW/cm^2. Pulse Energy, Maximum - w/ Attenuator: 0.10 µJ/cm^2. Pulse Energy, Maximum - w/o Attenuator: 0.1 nJ/cm^2. Accuracy at constant temperature: ±7% @ 0.19; ±2% @ 0.20-1.1. Uniformity: ±2%. Linearity: ±0.5%. Saturation Current: 0.1 mA/cm^2. Responsivity: >=0.09 A/W, 250–1000 nm. Responsivity (Peak): >0.4 A/W @ 850 ± 100 A/W. Rise Time: <= 2 µs. Shunt Resistance: >=2 M-Ohm (typ). Die Capacitance: 8,800 pF. Reverse Bias, Maximum: 100 V. Material: Silicon.
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