818T-150 In Stock

The 818T-150 by Newport is an advanced High-Power Detector designed to offer precise power measurements for a wide range of pulsed and continuous wave (CW) sources, spanning from ultraviolet (UV) to far infrared (IR) wavelengths. When paired with a compatible optical meter, this detector proves particularly valuable, enabling accurate power assessment and even pulse energy measurement. Primarily engineered to gauge CW optical power, the 818T-150 relies on the meticulous observation of thermal effects resulting from incident optical energy on its detection surface. This detector, when integrated with an optical meter, facilitates pulse energy measurement by effectively time-integrating the incident power on the detector during a pulse event.

The 818T-150's characteristic response to variations in optical power is represented as a voltage response following a step function. This response displays an exponential pattern, allowing users to preemptively accelerate the voltage to its final level prior to the actual detector signal, enhancing real-time analysis accuracy. The 818T-150 has a proprietary high damage threshold surface, designed to withstand power densities up to 10 times higher than conventional "black" thermopiles. This distinctive capability significantly extends the detector's operational range, contributing to its enhanced utility. The large active area of the "black" absorbing surface is optimized for precise measurements in excimer laser applications. To optimize performance, it's advisable to expand the incident beam rather than focus it directly onto the detector. This detector's integrity can be monitored through visual inspection, and potential damage is discernible by discoloration. The occurrence of surface melting serves as an indication of power densities surpassing the recommended operational threshold.