概要（Overview）

The 81625A is a high-performance optical head designed for precision measurements in advanced photonics. Its main component is an Indium Gallium Arsenide (InGaAs) sensor, which is known for its sensitivity and efficiency in the near-infrared to the short-wave infrared spectral range. This optical head features a large 5mm diameter sensor, enabling it to capture a substantial amount of light, which is ideal for applications requiring high power measurements. It is a robust and reliable choice for professionals in the field of optical testing and measurement.