Low cost ring laser angular rate sensor

A method of making a ring laser comprising:

• forming at least three flat surfaces on a block, said flat surfaces each having a normal to the plane thereof, and all of said normal to said surfaces being substantially coplanar, said flat surfaces arranged relative to each other to permit a selected group of connected line segments extending between said flat surfaces to form a closed-loop polygon in which a normal to each of said flat surfaces passes through the vertex of adjacent ones of said connected line segments, intersects the flat surface, and bisects the angle between said adjacent line segments;
• boring a first set of cavities through said block along said selected group of line segments;
• boring at least a second set of cavities through said block similarly arranged as said first set of cavities;
• affixing mirrors to said flat surfaces;
• and
• slicing said block into separate block portions having a single set of cavities.