Recent content by thebigfotos

I am using the laser beam for plant growth and that specific power density excites the enzyme system in the germinating seeds.

Re: dioptika beam expander? Any idea where can I buy the polarizer?

I just want to split the photons, what kind of lens do you suggest?

Re: dioptika beam expander? Hey, I am in desperate need for one. I have two systems of 25mW power. One at wavelength 640nm and other one of 473 nm. I want to expand the beam by at-least 10 fold with decreasing the power density at the point of exposure. Can you help with that? I can buy the...

yeah, thats the school in the middle of nowhere. I know it sucks man.

Hello All, I am new to the group. Great discussion. I work on laser bio-stimulation of plants for my PhD project. I am at Texas Tech right now. I am using 640 and 473nm, 25mW diodes. The beam is pretty sharp, 2 mm for red and 5 mm for blue. It has been 2 years I am working to increase the root...

Hello all, It feels great to be a part of this cool community. I am a researcher at Texas Tech uni. I work with low power laser (below 25mW). I use lasers for bio-stimulation of plant tissues, especially seeds. I am very excited to learn from you all. Cheers, thebigfotos

Hello all, I am also trying to build my own beam expander for my laser systems. I have one with 640nm and another with 473 nm. I want the power density of between 50 and 100mw/cm2 at the point of exposure. The beam diameter for 640nm is 2mm and for 473 is 5mm. Right now the power density if...