Hello Optics community,
I'm currently setting up a scattering experiment using a Class 4 blue diode laser with a 10 CW power rating. The challenge is in achieving a tightly collimated beam around 1mm in diameter, crucial for my experiment. The laser has a significant full divergence angle of 19.076 degrees, with varying beam diameters at different distances:
- 41.58mm at 114.76mm from the source
- 24.52mm at 63.52mm from the source
I've already tried using a fiber port collimator, which reduced the beam divergence by about 50%. Despite this improvement, the beam still isn't sufficiently collimated for my needs. I'm considering using a two-lens system with a second convex lens to further address this issue.
Here are my specific questions:
I have attached the laser specification below for your reference and an image of the collimator I am currently using. Your expert advice would be greatly appreciated as I navigate this challenge.
Thank you in advance for your help and insights.
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