Tianli Lee

4 Questions 2 Answers 0 Followers

Questions related from Tianli Lee

What is the theory behind imaging a precision pinhole?

In my efforts to characterise a 0.67 NA microscope objective, I have placed a 20 micron precision pinhole at the focal plane of the objective, and back illuminated the pinhole with a 767nm laser....

16 February 2019 222 0 View

What are the computational techniques/opensource codes to analyze interferometry fringe patterns?

I have been using Michelson Interferometry to characterise the surface flatness of my glass cell. In the reference arm of my interferometer, I am using a mirror of surface flatness lambda/10. The...

20 October 2018 5,302 3 View

How do I measure the surface flatness of a anti-reflection coated glass cell?

I have a glass cell in which my lab group is keen to trap single atoms using an optical tweezer (objective sits outside the glass cell). Before we do so, it is key to characterise the flatness and...

20 October 2018 4,573 3 View

Recommendations on cameras and lens for motorised focus manipulation via raspberry pi board?

I am currently working on a distance detection system, and would like to demonstrate it's capabilities by coupling it to an optical system through a raspberry pi board. The proposed idea is to...

14 June 2018 1,365 2 View