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Easiest solution for divergent beam, large area at 30cm

snabela

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Mar 14, 2012
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Hi!

For a biomedical application, I need to create a relatively uniform illumination of 15x15 cm at about 30 cm distance (15 degr angle). Laser should be red or near infrared.

I basically have two questions:

1. Is it possible with affordable components to create a "divergent flat-top" profile? The flat-top beam shapers I have seen cost several 1000s of dollars, which is far beyond my application.

2. If I am willing to accept a inhomogeneous beam profile, should I just take a raw laser diode or would it be better to use a cheap focusable dot laser and adjust its focus. Is it possible to make these as divergent as I need, i.e. 15 degrees?

Thanks in advance and by the way, great forum!
 




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