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- Oct 30, 2014
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Hi,
I have a 500mW 405 laser diode with a G2 lens. I need to spatially filter the beam to produce a beautiful gaussian profile. I am trying to produce a clean set of interference fringes through a Mach-Zender interferometer.
I have a optics table and a 12.5 micron pinhole with nice positioning capability. I can produce a nice gaussian central portion but I always have a lot of rings around the central portion. These rings cause problems later in my setup. I was told the spatial filter isn't matched correctly if you still have rings.
Has anyone had success spatial filtering with a similar setup?
Thanks.
I have a 500mW 405 laser diode with a G2 lens. I need to spatially filter the beam to produce a beautiful gaussian profile. I am trying to produce a clean set of interference fringes through a Mach-Zender interferometer.
I have a optics table and a 12.5 micron pinhole with nice positioning capability. I can produce a nice gaussian central portion but I always have a lot of rings around the central portion. These rings cause problems later in my setup. I was told the spatial filter isn't matched correctly if you still have rings.
Has anyone had success spatial filtering with a similar setup?
Thanks.