Photon Optics

[Music] okay good morning welcome to introduction to photonics we started last week with the learning outcome of identifying fundamental principles of photon optics and quantifying photon properties since this picture is drastically different from the kind of things that we've been seeing previously just from coming from the particle nature of light we have been spending a

little bit of time understanding what this means and of course one thing that helps in this understanding that these photons is one way of looking at them as particles but they do exhibit wave nature so they have a wave particle duality and through that duality we can bridge across and understand a lot of

properties from the wave picture as well right it gives us an opportunity but trust me what this picture also allows is to get a little more insight which cannot actually be explained so well used using the wave picture and that's what we are getting into in the next few weeks we will talk about light emission

and detection which as we will understand is a quantum phenomena right there is a certain quantized interaction that is happening and and and that's what we will read about now before we go on I just wanted to clarify one particular thing of course we talked about you know when in the photon picture that the you

you you know define an energy of a photon which corresponds to the frequency and we were looking at that relationship we look into that a little more detail today but before we go on I wanted to actually clarify something and this was actually something that was pointed out towards the end of or after

the last session so somebody was pointing out this part is very clear that you know we have a monochromatic wave and to characterize that monochrome anticipate time but the converse was not as clear what was the was a specific comment so to essentially clarify that let's just take a very short pulse so