Register to reply

Photon stream impinging on half-silvered mirror

by Billyneutron
Tags: halfsilvered, impinging, mirror, photon, stream
Share this thread:
Sep27-10, 07:40 PM
P: 13
In the classic experiment, light impinges on half-silvered mirror, the mirror reflects just half the light and transmits the rest.

The photon before encounter with the mirror is [A>, then afterwards it evolves according to U to become [B> + i[C> (where C is the reflected light). The imaginary factor "i" is said to arise because of a net phase shift by a quarter of a wavelength which occurs between reflected and transmitted beams.

I'm confused with this last part- Why, again, is "I" used? I'm unclear about the phase shift by 1/4 wavelength. Can anyone explain this in laymens?
Phys.Org News Partner Physics news on
Physicists unlock nature of high-temperature superconductivity
Serial time-encoded amplified microscopy for ultrafast imaging based on multi-wavelength laser
Measuring the smallest magnets: Physicists measured magnetic interactions between single electrons
Sep30-10, 09:41 PM
P: 13

Register to reply

Related Discussions
Photon off a mirror ? Quantum Physics 4
Half-silvered mirrors and transmission and reflection General Physics 0
Half silvered mirror experiments Quantum Physics 3
Help with half-silvered mirrors General Physics 2