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We theoretically propose a practical method for realizing intense terahertz(THz) emission from intrinsic Josephson junctions (IJJs) using an external heatsource. An artificial inhomogeneous temperature distribution by the localheating strongly excites the Josephson plasma wave inside IJJs and enhances THzemission power. We show optimum heating conditions for achieving high power THzemission. Our result indicates that local heat control is a powerful method torealize practical solid-state THz-emitters utilizing IJJs.

Possibility to enhance teraherz emission from intrinsic Josephson junction by external local heating