em_angular_frequency

plasmapy.formulary.laser.em_angular_frequency(

wavelength: Annotated[Quantity, Unit('m')],

) → Annotated[Quantity, Unit('rad / s')]

Calculate the angular frequency \(\omega\) of a laser given the the wavelength of the beam \(\lambda\).

The angular frequency of a wave \(\omega\) can be calculated using:

\[\omega = \frac{2\pi c}{\lambda},\]

where \(\lambda\) is the wavelength of the beam and \(c\) is the speed of light.

Aliases: omega_

Parameters:

wavelength (Quantity) – Wavelength of the laser beam (convertible to m).

Returns:

omega_0 – The angular frequency of a laser with a given wavelength.

Return type:

Quantity

Notes

For details, see Ling et al. [2016].

Examples

>>> import astropy.units as u
>>> em_angular_frequency(800 * u.nm)
<Quantity 2.35456446e+15 rad / s>