Fabry-Perot Effect Research Articles

Broad band far infrared Fabry-Perot with variable finesse

A new type of Fabry-Perot etalon that works on a very broad band for far infrared radiation has been tested. This implementation has been obtained by replacing usual meshes with wire polarizers. Its finesse can be adjusted by rotating a polarizer respect to the other one. The Fabry-Perot effect has been obtained in reflection instead of transmission.

Fast and sensitive nonlinear processes: bistability in CdHgTe

We discuss the origin and characteristics of the very large intensity-dependent changes in the refractive index of the semiconductor cadmium mercury telluride at 10.6 m. With continuous wave (c.w.) radiation and sample temperatures of 77 K nonlinear Fabry-Perot effects can be observed at powers as low as 1 mW. The Auger dominated recombination process and the thermal contributions to the refractive index make observations of optical bistability difficult with c.w. radiation. However, the use of a pulsed CO 2 laser and two-photon absorption of the radiation does lead to the observation of bistability at room temperature. We compare these results with the reported work on InSb.

Determination of the Optical Properties and Absolute Concentrations of Electron-Hole Drops in Germanium

We report measurements of the scattering and absorption of 3.39-\ensuremath{\mu}m light by electron-hole drops in Ge. An unexpected Fabry-Perot effect in our samples allows us to measure not only the drop size but also their absolute concentration and the optical indices of refraction of the electron-hole condensate.