I have a fiber output which is collimated by a simple PCX lens. I check the beam collimation with a shear plate.
I’d like to model this using POP but I’m not sure it’s possible? Seems like I would need non-sequential mode to account for the splitting.
Or is it possible another way, maybe using the Huygens integral in NSQ?
+3
You’re right. Use a shear plate in non-sequential mode to get shear fringes. Sequential mode gives you the wavefront directly.
But what about diffraction? It's a gaussian beam...
+3
Well, a shear plate is just an experimental method to view the wavefront. POP lets you look at the phase of the wavefront including diffraction directly, you don’t need a model shear plate to see it.
True but I need to do a sensitivity analysis of how well collimated the beam is, based on the fringe pattern seen. In other words how good does the fringe pattern need to be to get “good” collimation.
Enter your username or e-mail address. We'll send you an e-mail with instructions to reset your password.
Do not provide any information or data that is restricted by applicable law, including by the People’s Republic of China’s Cybersecurity and Data Security Laws ( e.g., Important Data, National Core Data, etc.).
不要提供任何受适用法律，包括中华人民共和国的网络安全和数据安全法限制的信息或数据（如重要数据、国家核心数据等）。