818 Series advanced free space photodiode sensors are calibrated for use with newport power meters. They feature a removable, threaded OD3 attenuator. Utilizing NIST-traceable standards and calibrated with high-precision equipment these optical power detectors offer the lowest calibration uncertainty in industry.
| Compare | Model | Drawings, CAD & Specs | Availability | Price | |||
|---|---|---|---|---|---|---|---|
|
818-UV/DB Optical Power Detector, UV Silicon, 200-1100nm, DB15 Calibration Module |
In Stock
|
$734.00 |
|
|||
|
818-SL/DB Optical Power Detector, Silicon, 400-1100 nm, DB15 Calibration Module |
In Stock
|
$675.00 |
|
|||
|
818-IR/DB Optical Power Detector, Germanium, 780-1800 nm, DB15 Calibration Module |
In Stock
|
$793.00 |
|
|||
|
818-IG/DB Optical Power Detector, InGaAs, 800-1650 nm, DB15 Calibration Module |
4 Weeks
|
$1,278.00 |
|
| Models |
$734.00
In Stock
Product Series Overview
|
$675.00
In Stock
Product Series Overview
|
$793.00
In Stock
Product Series Overview
|
$1,278.00
4 Weeks
Product Series Overview
|
|---|---|---|---|---|
| Detector Type | Post Mounted | Post Mounted | Post Mounted | Post Mounted |
| Detector Input | Free Space | Free Space | Free Space | Free Space |
| Detector Material | UV Enhanced Silicon | Silicon | Germanium | Indium Gallium Arsenide |
| Spectral Range | 200 - 1100 nm | 400 - 1100 nm | 780 - 1800 nm | 800 - 1650 nm |
| Sensor Size | 10 x 10 mm | Ø11.3 mm | Ø3 mm | Ø3 mm |
| Attenuator | OD3, Threaded | OD3, Threaded | OD3, Threaded | OD3, Threaded |
| Maximum Measurable Power | 1500 mW | 2000 mW | 2000 mW | 2000 mW |
| Maximum Measurable Power Without Attenuator | 5 mW (200 - 400 nm); 2.5 mW (400 - 600 nm, >1050 nm) , 1.5 mW (600 - 1050 nm) | 4 mW with 1830-R and 1936-R, 2.5 mW with 843-R, 1919-R, and 841-PE-USB | 10 mW (1918-R, 1936-R/2936-R), 1.3 mW (843-R, 1919-R, 841-PE-USB) | 10 mW (1830-R, 1918-R, 1936-R/2936-R), 1.3 mW (843-R, 1919-R, 841-PE-USB) |
| Minimum Measurable Power | 20 pW | 20 pW | 5 nW | 20 pW |
| Maximum Power Density | 30 W/cm2 | 30 W/cm2 | 30 W/cm2 | 30 W/cm2 |
| Maximum Power Density without Attenuator | 0.2 W/cm2 | 3 W/cm2 | 3 W/cm2 | 3 W/cm2 |
| Maximum Pulse Energy | 400 µJ | 60 µJ | 60 µJ | |
| Maximum Pulse Energy Without Attenuator | 0.4 µJ | 60 nJ | 60 nJ | 60 nJ |
| Linearity | ±0.5 % | ±0.5 % | ±0.5 % | ±0.5 % |
| Uniformity | ±2 % over Ø2 mm with attenuator, ±2 % over Ø4 mm without attenuator | ±2 % | ±2 % | ±2 % @ 1550 nm |
| Rise Time | 3 µs | ≤2 µs | ≤2 µs | ≤2 µs |
| Calibration Module | Removable DB15 Connector | Removable DB15 Connector | Removable DB15 Connector | |
| Connector Type | DB15 | DB15 | DB15 | DB15 |
| Cable Length | 1.5 m | 1.5 m | 1.5 m | 1.5 m |
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.
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.
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.
Our calibrated photodiode sensors include a full spectral response calibration utilizing NIST-traceable standards calibrated with high-precision equipment maintained in Newport’s optical detector calibration facility. Tight calibration facility and process control allows the tightest calibration uncertainty in industry. Each detector is shipped with the calibration data, which is electronically stored inside the detector's EEPROM. A certificate of calibration as well as the actual calibration curves and data are shipped with each detector for attenuator and no attenuator models. To maintain accuracy and guarantee performance, Newport recommends annual photodiode detector calibration.
The 884 Series OD3 attenuators extend the calibrated optical dynamic range of our detectors by three decades. Both the attenuator and detector have their serial number scribed on the part which, to maintain calibration, must match. Our attenuator design provides high damage threshold and spectral flatness. With the low noise equivalent power (NEP) associated with the photodiodes being used, a wider dynamic range is achieved. The clear aperture of the 884 Series attenuators is 10.3 mm.
For less than 1 mW input power (or 0.1 mW for 818-UV/DB between 200-400 nm), removing the OD3 attenuator by unscrewing it from the detector head is recommended to maximize the signal-to-noise ratio.
The 818 series detectors include a BNC connector with a removable calibration module. The /DB suffix indicates a DB15-style calibration module that is directly compatible with Newport’s current power meters. For older instruments that require no calibration module (BNC), we recommend that customers purchase 818-xx/DB and simply remove the DB15 calibration module. Please order the
2 Weeks
Product Series Overview
The BNC connector extends the functionality of the 818 Series photodiode sensors. It enables direct connection to an ammeter or lock-in amplifier. It also allows the detector output to be viewed on an oscilloscope after first connecting it to a current-to-voltage preamplifier, such as Newport's model
$1,061.00
Product Series Overview
These photodiode sensors can be converted to measure optical power from connectorized or bare optical fibers. Newport offers a comprehensive set of screw-in fiber-optic adapters to match a variety of connector types. Our bare fiber holder and adapter mount are designed together to hold 250-µm bare fibers without damaging the fiber.
Newport offers a comprehensive range of optical power meters from low cost, hand-held meters to the most advanced dual-channel benchtop meter available in the market. Presented here is a list of meters compatible with the 918D Series sensors. For more detailed information about our power meters, please see our Optical Power Meter Guide.
 1938-R/2938-R |
 1936-R/2936-R |
 1919-R |
 843-R/843-R-USB |
 845-PE-RS |
 844-PE-USB |
|
|---|---|---|---|---|---|---|
| User Interface | Touchscreen | Advanced | Advanced | Simple | User Commands, PM Manager | PMManager only |
| Measurement Modes | Power, Low Freq. Power, Peak-to-Peak Power, RMS Power, Exposure, Current |
Power, Peak-to-Peak Power, RMS Power, Current |
Power, Low Freq. Power Exposure |
Power | Power, Low Freq. Power |
Power, Low Freq. Power |
| Analog Bandwidth | Up to 200 kHz | Up to 400 kHz | 15 Hz | 15 Hz | 15 Hz | 15 Hz |
| Data Storage | 2 GB internal, External USB memory size, Via PMManager |
250,000 pts internal | Limited by USB memory size | 
$1,342.00
In Stock
Product Series Overview
$1,067.00
In Stock
Product Series Overview
|
User Commands, PM Manager | Via PMManager |
| Measurement Rate per Second | 10,000 | 10,000 | 15 | 15 | 15 | 15 |
| Trigger In/Out | ✔ | ✔ | ||||
| Analog Out | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ |
| Computer Interface | USB RS232 Ethernet |
USB RS232 |
USB RS232 |
$1,342.00
In Stock
Product Series Overview
$1,067.00
In Stock
Product Series Overview
|
RS232 | USB |
Please refer to Newport Power Meter and Detector Legacy and Compatibility for a complete list of meters that are compatible with this model.
Ultra-High Velocity