Day 20

I learned ABCD law today and I was trying to write code for probe beam's path in Matlab; I think this is a good way to double check my calculations. Although I knew how to do matrixes multiplications, I'm not sure how to get spot size.

I was checking camera's exposure again today. I could see the light integrated during a certain exposure time on the images collected. But I couldn't tell the shape of the object. I think there exists a transition time between the light on and off, which caused the decreasing of resolution.

In dark:

Short moment with the light on during exposure time:

 A good news is that Dr. Qiao came back and I'll have a meeting with her tomorrow.