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Summary of Contents for MKS Ophir FPD-IG-25
- Page 1 Fast Photodiode Detectors Fasr Photodiode Detectors FPD-IG-25 Temporal Sensors User Manual Ophir Optronics Solutions Ltd.
- Page 2 Ophir Fast Photodiode Detector User’s Manual Thank you for purchasing your Fast Photodiode Detector from Ophir. This user’s manual will help answer any questions you may have regarding the safe use and optimal operation of your Fast Photodiode Detector. Table of Contents Fast Photodiode Detector Overview .........................
- Page 3 II. Operation of your Ophir Fast Photodiode Detector A. Caution: Eye safety precautions must be followed with any equipment used in the vicinity of laser beams. Laser beams may reflect from the surface of the detector or the optical mount and caution must be exercised.
- Page 4 IV. Accessories The following types of accessories are available for use with Ophir Fast Photodiode Detectors: 1. Fiber optic cable connectors 2. Adapters for attachment to IS6 integrating spheres 3. ND filters for attenuating the laser signal level Fiber Adapters SC type 7Z08227 ST type...
- Page 5 B. A signal has been detected previously obtained, but is currently lost. 1. Try steps listed under A. 2. Inspect the active area of the photodiode for any signs of damage. 3. Test the batteries : a. Units with internal batteries will typically operate for several years, but operation with CW or high rep rate lasers can drain the batteries much faster.
- Page 6 Spectral Response FPD-IG-25 1000 1200 1400 1600 1800 Wavelength [nm] VII. Drawings: Fast Photodiode Detectors FPD-IG-25 User Manual...
- Page 7 VIII. Schematic: Fast Photodiode Detectors Glossary of Terms Bandwidth: The range of frequencies from 0Hz (DC) to the frequency at which the responsivity decreases by 3dB. Bandwidth and rise time can be approximately related by the equation: Bandwidth ≈ 0.35/rise time for a Gaussian pulse input. Bias Voltage: The photodiode’s junction capacitance can be modified by applying a reverse voltage.
- Page 8 Responsivity: In amps per watt (A/W), responsivity is the current output of the photodiode for a given input power, and is determined by the diode structure. Responsivity varies with wavelength and diode material. Responsivity (Irradiance): In V per W/cm is the voltage output as a function of the light input irradiance.
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