918D-IR-OD3R In Stock

The 918D-IR-OD3R by Newport is a Photodiode Detector that is tailored for low optical power assessments, incorporating advanced temperature sensing electronics for precise compensation of temperature-induced drift. This detector showcases several key features, including an integral OD3 attenuation filter with automated on/off detection, seamless integration of calibration data storage, and utilization of high-quality Germanium material. Encompassing a comprehensive wavelength span ranging from 780 nm to 1800 nm, the 918D-IR-OD3R demonstrates exceptional sensitivity and minimal noise, facilitating accurate measurements within a broad power range extending from milli-Watts to femto-Watts.

The design of the 918D-IR-OD3R incorporates a 15-pin D-sub type connector, strategically positioned for compatibility with compatible handheld optical power meters and optical energy meters. To ensure optimal connectivity, it is advised to securely attach the detector's connector to the rear or side panels of the optical meter, employing manual hand-tightening of the accompanying thumbscrews. Within the detector's construction lies an EEPROM, effectively storing meticulously calibrated responsivity data for both attenuated and unattenuated configurations. The hot-pluggable nature of the 918D-IR-OD3R enables seamless data transfer upon initial connection to the power meter, enabling real-time corrections of responsivity concerning user-selected wavelengths. The presence of the built-in OD3 attenuator is augmented by a user-friendly thumb-wheel mechanism, strategically positioned atop the detector housing. Automatic detection by the optical meter governs the on/off status of the attenuator, streamlining the measurement process.

Intricately integrated within the 918D-IR-OD3R is a sensor mechanism, proficiently detecting the position of the attenuator and signaling the connected instrument to apply the most appropriate responsivity profile, accounting for the detector-attenuator combination. Additionally, the detector houses a thermistor, facilitating temperature measurements that are subsequently leveraged for precise numerical corrections to responsivity. The 918D-IR-OD3R's engineering is focused on maintaining accurate alignment of the internal photodiode's optical axis. This alignment is optimized by positioning the photodiode directly over the base-mounted hole, ensuring consistent performance even when the detector is rotated around its axis. This robust design approach bolsters measurement accuracy across a variety of scenarios. Notably, the detector's versatility extends to its mounting options, encompassing both post mounting and compatibility with an optional base plate featuring 8-32 and M4 threaded holes.