Solid-state gyrolaser with controlled optical pumping

摘要

The gyrolaser has a ring-shaped optical cavity (1) with mirrors (11-14), and a solid state amplifying medium (15) pumped by a laser diode (16) whose optical emission power is determined by a current supply source (17). A measuring unit (18) e.g. photo-detector, measures optical frequency difference existing between two optical modes, and a set of measuring units (20, 21) measures total optical power circulating in the optical cavity. A control unit (22) controls the current delivered by a supply source in such a way to constantly maintain the total optical power.