Recent content by sml2010

hi dear Cthugha thank you for your reply. I only need a very small spot at a single position, the laser beam in my focus distance heated big zone (near 1.2 mm) but i want have a laser beam with 0.2 mm heated zone. I am looking for a method to have a small spot beam to have a smaller heated...

Hi Please help me to know : if i have a laser beam with 5 millimeter diameter that reduced to 0.5 millimeter diameter with a lens, Can i reduced the 0.5 millimeter diameter beam to 0.05 or less that 0.5 with another the same lens...

Hi I have a laser beam(engraving laser machine) and then use a lens for focus the beam but my lens has a crack on the center of lens and when i use my laser in high power the beam diameter will bigger and burning area zone is bigger so: 1- Does the crack doesn't let the maximum focus?in law or...

Thank you very much of all dear my friend that help me and post a reply here thank you

Hi to all Can some one help me for below question: What is different between "isotropic thermal conductivity" with " anisotropic thermal conductivity" ? where and when we must use isotropic or anisotropic ? which one is more accurate? I solve an example in a FEM software and it is...