Recent content by Zachariah

basler scout sca640-70gm lens mounted.

The set up is so simple: Two lights are mixed in an integrant sphere which is coupled with an optical fiber, at the end of the optical fiber i placed a camera for readout. Precautions already had been taken into consideration: - Sufficient supply power. - No external noise. - All parameters...

Can the optical components (Lenses..) be responsible for such aberration?

Thank you very much, i hope this will help.

Well actually i don't say this is definitely an interference, i encountered this phenomena and i tried to know why it occurs and i did not find any other explanation but the possibility of having an optical interaction. Same electrical circuit is used in all other combination i experimented and...

LEDs need 3V and consume some milliamperes, the power supply output is 3V/1A

Ok i will try this, i keep u tuned. Is this protocol has an appellation so i can read more about it? Link?

The imager was not saturated in any of those measurements, i worked with moderated powers. Using low powers leads to good result, and as long as i increase the power, this phenomena becomes critical. The detector accuracy is taken into consideration. I think the experiment u suggested is...

To be sure i don't have a measurement error i tried several configurations: - Two LEDs with separated spectra --> good result - Two LEDs with overlapped spectra, LEDs are similar (fabricated from same semiconductor materiel) --> intensity decreases - Two LEDs with overlapped spectra, LEDs are...

Yes, the detector is linear with respect to the incident power. I actually mix the two lights inside an integrant sphere coupled with the optical fiber, all measures are taken without changing any parameter, i only turn on and off LEDs.

To be clear, i tried two LEDs with spectra totally separated, i took the image of the incoming light via an optical fiber, the mean intensity of a ROI is equal to the sum of individual intensities, then i used the two LEDs mentioned above, and the resulted intensity is less than the sum by more...

I agree, in this case we cannot visualize the pattern, and even if we take an image of it with the camera, we will get the mean intensity which is the sum of the individual intensities, but in my case, the result intensity is always below that sum, that pushed me to suppose the existence of...

Thanks for your fast replay, actually i am not intending to visualize interference pattern as with Young slits, but just looking for an evidence for the existence of a constructive or destructive superposition of waves.

Hi, i have a question about the optical interference, supposing we have two LEDs which spectra are partially overlapped, can we have interferences?? is there any chance to have a partial coherence between the two lights??