Compare Model Drawings, CAD & Specs Sensor Size Spectral Range Maximum Measurable Power Maximum Measurable Power Without Attenuator Availability Price
$753
In Stock
10 x 10 mm 780 - 1800 nm 2.0 W (1830-R, 1918-R, 1936-R/2936-R), 1.3 W (843-R, 1919-R, 841-PE-USB) 5 mW (1830-R, 1918-R, 1936-R/2936-R), 1.3 mW (843-R, 1919-R, 841-PE-USB)
In Stock
$985
In Stock
10 x 10 mm 200 - 1100 nm 0.2 W (200-400 nm); 50 mW (400-1100 nm) 0.3 mW (200 - 400 nm); 0.1 mW (400 - 600 nm, >1050 nm) , 0.07 mW (600 - 1050 nm)
In Stock
$717
In Stock
10 x 10 mm 400 - 1100 nm 2.0 W 4 mW (1830-R, 1918-R, 1936-R/2936-R), 2.5 mW (843-R, 1919-R, 841-PE-USB)
In Stock
$1,018
In Stock
10 x 10 mm 780 - 1800 nm 2.0 W (1830-R, 1918-R, 1936-R/2936-R), 1.3 W (843-R, 1919-R, 841-PE-USB) 5 mW (1830-R, 1918-R, 1936-R/2936-R), 1.3 mW (843-R, 1919-R, 841-PE-USB)
In Stock
$916
In Stock
10 x 10 mm 400 - 1100 nm 2.0 W 4 mW with 1830-R and 1936-R, 2.5 mW with 843-R, 1919-R, and 841-PE-USB
In Stock
$1,132
In Stock
10 x 10 mm 200 - 1100 nm 0.2 W (200-400 nm); 50 mW (400-1100 nm) 0.3 mW (200 - 400 nm); 0.1 mW (400 - 600 nm, >1050 nm) , 0.07 mW (600 - 1050 nm)
In Stock

Features

818 Series vs. 918D Series

Both the 818-ST2 series and the 918D-ST series incorporate a large 10 mm X 10 mm Si or Ge photodiode. These slim detectors are ideal for measurements in tight locations with busy setups. All models provide a built-in calibrated OD3 attenuator switch. With the 818-ST2 series, the calibration module is detachable from the BNC connector, allowing versatile interfacing with Newport meters, oscilloscopes, or current meters. The high performance 918D-ST series detectors feature the Attenuator On/Off sensor and the temperature sensor. The power readings are automatically corrected for the Attenuator position and are compensated for the temperature variation.

Clear Anodization for UV Detectors

The UV detectors are packaged in clear anodized aluminum housing to avoid burning (resulting in potential damages on optics in the setup), especially in the UV wavelength range.

Highest Quality Photodiodes

Newport uses the highest quality semiconductor detector materials available. Available sensor types are silicon (Si), UV-enhanced Si, and Germanium. Each detector comes with a calibration report detailing the measured responsivity in 10 nm increments throughout the specified spectral range. Newport’s advanced calibration facility performs the tightest calibrations in the business, further improving the absolute accuracy of our detectors.

Rugged Aluminum Housing

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 918D-ST and 818-ST2 Series are designed in aluminum housing to address this issue, and to make it workable in more challenging environments.

Tightest Calibration Uncertainty

Newport's wand detectors 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 with and without the attenuator are shipped with each product. To maintain accuracy and guarantee performance Newport recommends annual photodiode detector calibration.

Wide Dynamic Range with Built-in Attenuator

The built-in OD3 attenuators, calibrated for each matching detector and shipped together, extend the calibrated optical dynamic range of our detectors by three decades. Our attenuator design provides high damage threshold and spectral flatness. With the low NEP associated with the photodiodes we are using, a wider dynamic range is achieved. For less than 1 mW input power, we recommend removing the attenuator to maximize the signal to noise ratio.

Note on Detector Connectors

The models with the /DB suffix come with a detachable BNC/DB15 calibration module that provides direct compatibility with Newport’s current power meter offering. The models with the /CM suffix come with a detachable BNC/8-pin mini-DIN calibration module that provides compatibility with legacy Newport power meters. The standard BNC connector allows flexible interfacing with oscilloscopes, lock-in amplifiers or current meters. In both cases, the /CM and /DB adapters contain the detector calibration data, model number, serial number and calibration date for seamless operation with the power meter.