Skewed rhombus ring laser gyro

A ring resonator for the propagation of a beam of electromagnetic energy comprising:

• a plurality of reflectors positioned at the vertices of a regular tetrahedron and arranged to define a nonplanar propagation path therebetween and to provide circular birefringence to said beam, said nonplanar path having first and second path portions, said second path portion being the mirror image of said first path portion.

A plurality of reflectors positioned at the vertices of a regular tetrahedron so as to form a nonplanar resonant path for the propagation of a beam of electromagnetic energy therebetween, said nonplanar resonant path having equilateral segments disposed on a maximum of two planes and arranged to provide circular birefringence to said beam.

An optical system for the propagation of a beam of electromagnetic energy comprising:

• four mirrors positioned at the vertices of a regular tetrahedron for directing said beam of electromagnetic energy along an optical ring path haaving equal length segments lying in two intersecting planes, and
• wherein said optical ring path is arranged to provide circular birefringence to said beam.

In combination:

• a substantially cubical supporting block;
• and
• means for producing a resonant ring path having a nominal length within said block, said producing means comprising four mirrors positioned at diagonally opposite vertices of the faces of said cubical supporting block for providing an equilateral closed pa;th substantially along four contiguous diagonals of four faces of said block.