The 819S Integrating Spheres are useful for measurement of divergent light from laser diode sources. Their thin walls, only a few millimeters thick, make it possible to position the laser diode very close to the internal cavity of the sphere and thus collect 100 percent of the light emitted from the front facet of the device. A baffle, positioned between the input port and the detector port, prevents the detector from directly viewing the emitting aperture of the laser or the direct area of illumination.
In an integrating sphere the detected flux is always a small fraction of the incident flux. This attenuation, caused by light reflecting many times before reaching the detector, makes the integrating sphere ideal for measurement of output light power of high-power lasers.
The 819S Integrating Sphere coating has an effective range from 300 nm to 2400 nm, with reflectivity of >97% at 600 nm. Each sphere is designed with four equally-spaced ports located on the equator of the sphere.
The unmatched environmental stability and high-performance of Newport’s Model 819 Integrating Spheres are derived from their rugged monolithic thermoplastic material and are superior to coated integrating spheres. In addition, their high damage threshold surface can be cleaned with distilled ...

The 819S Integrating Spheres are useful for measurement of divergent light from laser diode sources. Their thin walls, only a few millimeters thick, make it possible to position the laser diode very close to the internal cavity of the sphere and thus collect 100 percent of the light emitted from the front facet of the device. A baffle, positioned between the input port and the detector port, prevents the detector from directly viewing the emitting aperture of the laser or the direct area of illumination.
In an integrating sphere the detected flux is always a small fraction of the incident flux. This attenuation, caused by light reflecting many times before reaching the detector, makes the integrating sphere ideal for measurement of output light power of high-power lasers.
The 819S Integrating Sphere coating has an effective range from 300 nm to 2400 nm, with reflectivity of >97% at 600 nm. Each sphere is designed with four equally-spaced ports located on the equator of the sphere.
The unmatched environmental stability and high-performance of Newport’s Model 819 Integrating Spheres are derived from their rugged monolithic thermoplastic material and are superior to coated integrating spheres. In addition, their high damage threshold surface can be cleaned with distilled water.
Hydrophobic, chemically inert and thermally stable to 350°C, Model 819 spheres can be used in demanding environments, including underwater, high or low temperature processes and high vacuum applications. At the same time, reflectance exceeding 95% from 250–2500 nm, 98% from 310–2100 nm, and 99% from 400–1500 nm make them ideal for even the most demanding measurements from the ultraviolet to the near infrared.