Photon stream impinging on half-silvered mirror


by Billyneutron
Tags: halfsilvered, impinging, mirror, photon, stream
Billyneutron
Billyneutron is offline
#1
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 Phys.org
Better thermal-imaging lens from waste sulfur
Scientists observe quantum superconductor-metal transition and superconducting glass
New technique detects microscopic diabetes-related eye damage
Billyneutron
Billyneutron is offline
#2
Sep30-10, 09:41 PM
P: 13
anyone?


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