We explain the rotational frequency shift of a light beam in classical terms and measure it using a mm-wave source. The shift is equal to the total angular momentum per photon multiplied by the angular velocity between the source and observer. This is analogous to the translational Doppler shift, which is equal to the momentum per photon multiplied by the translational velocity. We show that the shifts due to the spin and orbital angular momentum components of the light beam act in an additive way.
|Title of host publication
|Optical Angular Momentum
|Number of pages
|Published - 2016 Apr 19
Bibliographical notePublisher Copyright:
© 2003 by Taylor & Francis Group, LLC.
All Science Journal Classification (ASJC) codes
- General Engineering
- General Physics and Astronomy