Abstract
A device for coupling a laser resonator with the external medium consisting of two identical one-dimensional wire gratings positioned in parallel planes with a mutual shift of wires in these planes by half the period is proposed, developed, and experimentally studied. The possibility of using this structure is proven theoretically. The scheme of a laser source used to study the dependence of the output laser power on the distance between the gratings is presented. It is experimentally found that the transmittance of the proposed structure strongly depends both on the distance between the grating planes and on the relative period shift of gratings in these planes.
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