So upon watching videos and reading articles i understand few things. For one when the laser beam is focused to a tight enough point when placing a material in there (people use crayola markers) it will trap and burn that particle for a little while. My question is how can i do this without having to touch a marker to it? Can I achieve a particle effect through something else or atleast something that wont burn off the particle right away. Also is this effect as easy as talking a 405nm laser, focusing it with some sharp lenses and then having that particle get trapped. I have seen a few diagrams but still it is unclear all the equipment they use and then in a video it is just a laser focused to a point. Such as these:
UPDATE: Upon reading more i see the mW required is only around 5mW which isnt bad at all. I also see people use graphite but im not sure how ling that particle lasts? Forever until the beam is broken or only for a certain amount of time. To use graphite could i simple take a block of it and wave it in front of the laser at its lowest density point to capture the particle? My other confusion is the lens required what is so special? Is there maybe an equation that includes a class of particles, wavelength, power, and focal length of lens to see where i stand with this. I know this isnt what stack overflow is for but i just want to set this up and see it and understand it rather then just read so maybe a good diagram that i or any member coming here could understand in order to setup this experiment.