Laser Photon Emission Simulation
This simulation visualizes photon energy and emission rate from a laser source, as described in Example 11.1.
Example
Question:
Monochromatic light of frequency \( 6.0 \times 10^{14}~\text{Hz} \) is produced by a laser. The power emitted is \( 2.0 \times 10^{-3}~\text{W} \).
(a) What is the energy of a photon in the light beam?
(b) How many photons per second, on average, are emitted by the source?
Solution:
(a) Each photon has energy \[ E = h \nu = (6.63 \times 10^{-34}~\text{J s}) \times (6.0 \times 10^{14}~\text{Hz}) = 3.98 \times 10^{-19}~\text{J} \] (b) Number of photons per second: \[ N = \frac{P}{E} = \frac{2.0 \times 10^{-3}~\text{W}}{3.98 \times 10^{-19}~\text{J}} = 5.0 \times 10^{15} \] Thus, \( 5.0 \times 10^{15} \) photons are emitted per second.
