Hello, I use a 10x infinity objective as a condenser in a optical trap setup. The collimated forward scattered light is then focused with a 40mm lens onto a QPD. This is the imaging techqnique. There is also BFPI, and I am not clear on this method. My understanding is that I need to image the...
Hi, I am looking to illuminate a quadrant photo diode using a condenser/ lens combination in a optical trap setup. I see thorlabs has a kit that has a 100x objective as a trap and a 10x objective as a condenser. Does that mean that one doesn't need to collect all the laser light scattered from a...
Andy, sorry for the delay, I wanted to review everything once. I also went over your conversation with Kubikat. I would need to show you some pictures to explain. Slide1 is a closeup of the problem region.I have 1" optics, the filter and the mirrors before the tube lens. DSC09636 gives you...
Hi Andy, thanks for replying. I have a 10x (.25NA)objective as a condenser, I was using a 1.25 NA condenser before with the same effect.
I know its not Kohler illumination (since the objective is 1.25 oil) but this is also what Thorlabs uses in their "optical trapping kit".
Hello folks, I am on a project that involves combining Raman microscopy + optical tweezers, and I made a setup over the past year. All of this is home built on minimal funds so its not the neatest of all setups. It involves an upright microscope (coupled to trapping laser) and collecting the...