The discussion revolves around a problem related to the Fabry-Perot cavity, specifically focusing on the relationship between the distance between mirrors and the free spectral range (FSR) of the system. The original poster is tasked with demonstrating that increasing the distance L by \(\lambda/2\) is sufficient to scan the transmission peak over one FSR.
The discussion is ongoing, with some participants seeking clarification on the terminology and concepts involved, particularly regarding the free spectral range. Guidance has been offered to explore relevant literature and graphical representations related to the problem.
One participant notes that their textbook does not contain information on FSR, indicating a potential gap in resources or understanding of the topic. This may affect their ability to engage fully with the problem.