- #1
fargoth
- 320
- 6
after many experiments with digital holography i finally got the best interference image i could...
but after analyzing it, i got my object in two locations!
it was supposed to be on the lower right side of the image, but i got it on the upper right side too...
any idea why it happened?
if you need more info, i can explain the setup i used to get the image:
(without getting into detail about how i control the intensity of each beam and make sure there are no distubances):
first i split the laser beam, and light my object with one beam (the object beam), the second beam is reflected by glass from (almost) behind the object, and a digital camera without it's lenses pictures the interference of the two rays.
after i got my image, i use MATLAB to construct the image back - i simulate a beam with the same wavelength of the original beam that light through the image - it's pretty easy actually, i only need to use inverse Fourier transform on my image multiplied by something which holds the info about the distance of the camera and the focal length i want to use for my simulated eye.
the script is very strait forward, so if anyone want it, i can post it here.
anyway, i just can't figure out why i got the second object...
but after analyzing it, i got my object in two locations!
it was supposed to be on the lower right side of the image, but i got it on the upper right side too...
any idea why it happened?
if you need more info, i can explain the setup i used to get the image:
(without getting into detail about how i control the intensity of each beam and make sure there are no distubances):
first i split the laser beam, and light my object with one beam (the object beam), the second beam is reflected by glass from (almost) behind the object, and a digital camera without it's lenses pictures the interference of the two rays.
after i got my image, i use MATLAB to construct the image back - i simulate a beam with the same wavelength of the original beam that light through the image - it's pretty easy actually, i only need to use inverse Fourier transform on my image multiplied by something which holds the info about the distance of the camera and the focal length i want to use for my simulated eye.
the script is very strait forward, so if anyone want it, i can post it here.
anyway, i just can't figure out why i got the second object...