DescriptionSpecifications
Models
818-ST-UV/DB
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818-ST (/CM comes with an 8-pin DIN calibration module, and /DB comes with a DB15 calibration module)
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Highest Quality Photodiodes Are Used in Newport Semiconductor Detectors |
Newport uses the highest quality semiconductor detector materials available in our 818 Series Low-Power Detectors. In addition, each detector arrives with a complete full-spectrum calibration report detailing detector responsivity in 10 nm increments. Newport’s advanced in-house calibration facility performs the tightest calibrations in the business, further improving the absolute accuracy of our detectors. For more information, refer to Detector Calibration Services (Optical Detector Calibration Services). |
Plots of various photodiode characteristics
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Low NEP (Noise Equivalent Power) with a Wide Dynamic Range |
Exclusive OD3 attenuator technology extends the calibrated optical dynamic range of our Cylindrical and Hand-Held Wand Detectors by three decades. Our patented attenuator design provides low reflection, high damage threshold and spectral flatness, without the damage susceptibility problems of thin-film attenuators or the spectral variance of simple volume-absorbing attenuators. With the low NEP associated with the photodiodes Newport is using, a wider dynamic range is achieved. |
Typical spectral responsivity of Newport's low power detectors
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Detachable Calibration Modules for Calibrated Power Readings |
Calibration modules are required when using the 818 Series Low Power Detectors with Newport’s power meters in calibrated power reading. The module is matched to an individual detector and provides the meter with detector calibration and operating information. The calibration module option is indicated by the /CM or /DB suffix in the detector Model number. |
Rugged Aluminum Housing for 818-ST-UV(/DB) Optical Sensors |
High power laser beam, especially in the short UV wavelength range, is highly absorbed by plastic material, in which most other wand detectors are packaged. This can potentially result in evaporation of the material and with the UV wavelength optical coating can easily be damaged. Newport’s 818-ST-UV optical detector is designed in aluminum housing to address this issue, and to make it workable in more challenging environments. |
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Specifications
Model
w/ Calib. Module
w/ DB15 Connector | (/DB) | (/DB) |
| Spectral Range (µm) | 0.2-1.1 | 0.4-1.1 |
| Power, Average Max w/ Attenuator (W/cm2) | 0.2 | 2 |
| Power, Average Maximum w/o Attenuator (mW/cm2) | 0.2 | 2 |
| Pulse Energy, Maximum - w/ Attenuator (µJ/cm2) | 0.1 | 1 |
| Pulse Energy, Maximum - w/o Attenuator (nJ/cm2) | 0.1 | 1 |
| Uniformity (%)(1) | ±2 |
| Linearity (%) | ±0.5 |
| Saturation Current Density (mA/cm2) | 8 |
| Responsivity | >0.120 A/W
@ 200 nm | >0.1 A/W
400 - 1000 nm |
| Rise Time (µs) | ≤3 |
| Shunt Resistance (MΩ) (typ) | ≥50 |
| Die Capacitance (pF) | 1,100 |
| Reverse Bias, Maximum (V) | 5 |
| NEP (pW/√Hz) | 0.018 | 0.015 |
| Material | Silicon
(UV Enhanced) | Silicon
(400–1000 nm) |
| Active Area (cm2) | 1 |
| Shape | Wand |
| Attenuator, OD3 | Built-In |
1) When measured with beam centered and filling 80% of active area.
Typical spectral responsivity of Newport's low power detectors
| | Model | Description |
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818-ST
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Si Wand Detector 400–1100 nm, OD3 Attenuator, BNC Connector
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818-ST/CM
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Si Wand Detector, 400–1100 nm, OD3 Attenuator, 8-pin Calibration Module
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818-ST/DB
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Si Wand Detector, 400–1100 nm, OD3 Attenuator, DB15 Calibration Module
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818-ST-UV
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UV Wand Detector, UV-Silicon, 200–1100 nm, OD3 Attenuator, BNC Connector
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818-ST-UV/CM
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UV Wand Detector, UV-Silicon, 200–1100 nm, OD3, 8-pin Calibration Module
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818-ST-UV/DB
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UV Wand Detector, UV-Silicon, 200–1100 nm, OD3, DB15 Calibration Module
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