- #1
Curl
- 758
- 0
I took a cube polycarbonate sample and put a laser through it (perpendicular to a face). When light crosses both faces (front and back), some of the light will reflect while some goes through. My questions are:
1) For the light that reflects off the first face and goes straight back into the oncoming beam: does this interferance affect the output? Or what goes on when this happens? It's probably a QM question.
2) Some light that hits the 2nd face (back) will reflect back into the sample, effectively producing many many bounces inside the plastic (which are colinear). How can I predict the amount of light that comes out of the 2nd face, towards my detector?
BTW I'm using this sensor and just measuring voltage with a computer.
http://search.newport.com/?q=*&x2=sku&q2=818-SL-L
1) For the light that reflects off the first face and goes straight back into the oncoming beam: does this interferance affect the output? Or what goes on when this happens? It's probably a QM question.
2) Some light that hits the 2nd face (back) will reflect back into the sample, effectively producing many many bounces inside the plastic (which are colinear). How can I predict the amount of light that comes out of the 2nd face, towards my detector?
BTW I'm using this sensor and just measuring voltage with a computer.
http://search.newport.com/?q=*&x2=sku&q2=818-SL-L