偏波間位相変調による単一周波数コヒーレント光源のヘテロダイン化

抄録

We intend to make a coherent heterodyne light source that oscillates at a low beat frequency which has a simple structure and is easy to handle.
The frequency of light waves can be shifted by the doppler effect, which occurs in swept along the length of the movable arm of a polarization interferometer.
This paper showes how to make a heterodyne light source by retardance modulation based on this method.
Next, we present an application of the trial manufactured heterodyne light source to visualization of the distribution of responsivity on the photodiode's surface and the electrode's position by optical beam induced curennt, and the measurement of small displacement in a nano meterscale region by the heterodyne interferometric method.