"Phase modulation"

Hänsch–Couillaud locking of Mach?Zehnder interferometer for carrier removal from a phase-modulated optical spectrum

We describe and analyze the operation and stabilization of a Mach–Zehnder interferometer, which separates the carrier and the first-order sidebands of a phase-modulated laser field, and which is locked using the Hänsch–Couillaud method. In addition …