Pulse

Optical Beats

• Group Velocity
• Phase Velocity

Effective Pulse Length

$\Delta t_{\text{effective}}$ is the width of a rectangle whose height and area are the same as those of the pulse

$$\Delta t_{\text{effective}}=\frac{1}{f(0)}{\int }_{-\infty }^{\infty }|f(t)|dt$$

$\Delta \omega$ is defined similarly

Pulse Frequency