Things you need to know about the Usage of Integrating Sphere Labsphere

When one employs an integrating sphere labsphere for measuring optical power, you remove all the hassles faced with direct coupling method. But one must not forget that there are certain things about the integrating sphere you must know.

Read on to learn about those things…

You must pay attention to the internal reflectance

The internal surface of the sphere should be highly reflective and at a wavelength of light which is to be measured. This only will ascertain the right measurements. Old integrating spheres were made up of two hollow hemispheres. The inner surface is usually given a coat of material which reflects wavelength of interest and eventually diffuses the input light. Coating used is sensitive to environment changes such as atmospheric conditions: bases, acids and vacuum). The integrating sphere labsphere must be coated every year.

Calibrate detector and weight together 

The distinct feature of any sphere and detector is completely specific to the degree that it must be calibrated to. After calibration, both the detector and the sphere should be together and maintain the correct calibration. If the two are separated or the angular orientation of the detector is changed by rotating, it will alter the response of the two too.

Always pick the correct detector for your wavelength

The wavelength influences one’s preference of the detector material and the sphere coating. Remember, wavelength responsivity of the detector – Ge, InGaAs, Si varies.

In Conclusion

Now that you know the necessary things about integrating sphere labsphere, don’t forget them.