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Optical Power Detector, InGaAs, 800-1650 nm, OD1 Attenuator
Optical Power Detector, InGaAs, 800-1650 nm, OD1 Attenuator
Model: 918D-IG-OD1R
Product Series Overview
918D Photodiode Sensors with Attenuator SwitchThe 918D-IG-OD1R InGaAs Photodetector is designed for low optical power measurements. It features include integrated calibration-data storage, built-in OD1 attenuation filter with automatic On/Off detection, temperature sensing electronics for temperature drift compensation and is compatible with DB15 based Newport Power Meters. The Indium Gallium Arsenide (InGaAs) photodetector is NIST-traceable calibrated for 800-1650 nm optical power measurements. It includes a certificate of calibration with calibration curves and data for both attenuator on and off conditions.
Excellent Photodiode Linearity
These photodiodes show excellent linearity over a large dynamic range. This is ideal for use in applications that require high accuracy measurements down to the pW level, especially when combined with a high sensitivity power meter that can accommodate the large dynamic range of the optical signal.
Responsivity Variation over Temperature
A natural characteristic of a photodiode is for the its optical response to change as the temperature changes near the bandgap of semiconductor materials. Newport’s 918D series sensors feature a thermocouple near the photodiode, which allows certain Newport meters to read the temperature and automatically adjust the responsivity, ensuring the most accurate measurements.
Factors that Affect Maximum Measurable Power
The maximum measurable power of photodiode sensors is dependent on several factors such as the wavelength of incoming light, photodiode current output saturation, temperature, use of an attenuator and a power meter's maximum current input value. Newport provides maximum power specifications based on the power meter models, with and without an attenuator, and wavelength-dependent maximum power level. With these factors affecting measurable power in mind, choosing the proper detector for your application is critical.
Attenuator On/Off Sensor
The attenuator on/off sensor is built into the detector head. When a 918D series detector is connected to power meter models 1938-R, 2938-R, 1936-R, 2936-R, 1919-R, 843-R, 843-R-USB, 844-PE-USB, 845-PE-RS, the meter automatically switches the responsivity value. The user does not need to update the power meter setup. The detector is calibrated with the integrated attenuator and without it, and the data is saved in the EEPROM.
Specifications
- Detector TypePost Mounted
- Detector InputFree Space
- Detector MaterialIndium Gallium Arsenide
- Spectral Range800 - 1650 nm
- Sensor SizeØ3 mm
- AttenuatorOD1, Built-in
- Maximum Measurable Power30 mW
- Minimum Measurable Power20 pW
- Maximum Measurable Power Benchtop Meter30 mW
- Maximum Measurable Power Handheld Meter10 mW
- Maximum Measurable Power Without Attenuator4 mW
- Maximum Power Density10 W/cm²
- Maximum Power Density without Attenuator3 W/cm²
- Maximum Pulse Energy Without Attenuator5 nJ
- Maximum Pulse Energy50 nJ
- Calibration ModuleDB15 Connector Pigtail
- Calibration Uncertainty2.4% (900-1430 nm)
2.6% (1430-1600 nm) - Linearity±1 %
- Uniformity±2 %
- Rise Time≤2 µs
- Clear ApertureØ10.3 mm
- Connector TypeDB15
- Cable Length2 m
- Operating Temperature Range5 to 50°C
- Operating Humidity<70% RH
- RoHSCompliant
Resources & Downloads
3D Product Models
2D Product Drawings
918D CAD Drawing(96 kB, PDF)
Manuals
918D Photodiode Sensors User Manual(4.3 MB, PDF)
Technical Notes
Other
918D Series EU27 CE Declaration of Conformity(189.7 kB, PDF)
Literature
918D Photodiode Sensors Datasheet(1.8 MB, PDF)
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Compatible Power Meters
| Compare | Description | Drawings, CAD & Specs | Avail. | Price | ||
|---|---|---|---|---|---|---|
 | 1938-RAdvanced Optical Power & Meter, Benchtop, Single Channel | |||||
| 2938-RAdvanced Optical Power & Meter, Benchtop, Dual Channel | |||||
 | 1919-ROptical Power Meter, Handheld, High Performance | |||||
 | 843-ROptical power meter, economical, handheld, laser power and energy | |||||
| 843-R-USBOptical Power Meter, Economical Handheld, Laser Power & Energy | |||||
 | 844-PE-USBVirtual Power Meter, Optical Power and Energy, USB | |||||
 | 845-PE-RSVirtual Power Meter, RS232 |