How many photons are emitted in each pulse

What's new New posts Latest activity. Log in Register. Search titles only. Search Advanced search…. Log in. Close Menu. JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding. Welcome to our community Be a part of something great, join today! Register Log in. Physics Finding number of photons? Related questions Question f Question 6b What is the formula for frequency? How can I calculate wavelength of radio waves?

How can I calculate wavelength in meters? How can I calculate wavelength of a photon? How can I calculate the wavelength from energy?

Each photon of light at nm is 2. The whole pulse is 0. It is a simple matter of division to get:. We divided the energy of the whole pulse by the energy per photon to get the number of photons. Feel free to comment on the areas which are confusing. Good luck. You are given the energy of the laser pulse and asked how many electrons comprise it. If you know the energy of a single photon, just divide the energy of the laser pulse by the energy of one photons to see how many photons make up the pulse.

So most of the problem is just figuring out the energy of one photon from the given wavelength. I would use the wavelength of the laser light to calculate the energy of one single photon using the equation. This eliminates having to find the frequency and just saves a little time.