Fabry-Perot Type Interferometers Research Articles

Fabry-Perot interferometer with a quarter-wave retarder and an intermediate optical exit for displacement-measurements

Fabry-Perot type interferometers (FPI) are simple and contain few components so that the cost of production is expected to be low and the realization might be possible with integrated optics or micro-optics. This paper describes a modified strongly attenuated FPI for accurate displacement measurement with the detection of the direction. In our setup one mirror can be shifted several 10cm. A quarter-wave retarder and beamsplitter are placed in the FP-cavity. A lens with short focal length followed by a beamsplitter, two analyzers under a mutual orientation of 45° act as the detector system. It is shown that the presented setup leads to good experimental results so that it is well suited for the above mentioned purposes.

Interferometric method for concurrent measurement of thermo-optic and thermal expansion coefficients

A Fabry-Perot-type interferometer is described that permits the concurrent measurement of the coefficient of thermal expansion (alpha) and the thermooptic coefficient (dn/dT) of transparent materials. Measurements of the a and the dn/dT of vitreous silica and a heavy-metal fluoride glass show that the technique is accurate, reproducible, and easily performed. In addition, the technique is used to show that the dn/dT of heavy-metal fluoride glasses is negative and temperature dependent. The magnitude of dn/dT is found to increase with increasing temperature.

Optical and structural properties of superfine stratified periodic and aperiodic structures

Fabry-Perot type interferometers (FPI) are simple and contain few components so that the cost of production is expected to be low and the realization might be possible with integrated optics or micro-optics. This paper describes a modified strongly attenuated FPI for accurate displacement measurement with the detection of the direction. In our setup one mirror can be shifted several 10cm. A quarter-wave retarder and beamsplitter are placed in the FP-cavity. A lens with short focal length followed by a beamsplitter, two analyzers under a mutual orientation of 45° act as the detector system. It is shown that the presented setup leads to good experimental results so that it is well suited for the above mentioned purposes.

Resonance, phase front, and polarization-independence constraints of inhomogeneous fabry-perot interferometers

The major objective of this paper is to demonstrate the feasibility of imposing local resonance conditions while simultaneously controlling phase front properties upon transmission through slowly-varying Fabry-Perot type interferometers. The interaction of arbitrarily distorted incident phase fronts with double and triple-screened resonators is formulated, and appropriate design procedures are outlined. Special attention is paid to the significant effects of dielectric loading on the effective frequency band and to the cross polarization problem which arises, unavoidably, in conjunction with two-dimensional phase front distortions. The suggested design procedures are demonstrated via concrete numerical examples which are subsequently analyzed throughout a finite (20%) bandwidth.

Application of Corner Mirrors for Ultramicrowave Interferometers (Correspondence)

The Michelson type, Fabry-Perot type interferometers are often used in the field of ultramicrowaves; the latter replace conventional cavity resonators in the millimeter, submillimeter wave rauge.