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Spatial and temporal thermal management of a spintronic terahertz emitter

Gandubert, Gabriel, Nkeck, Joel Edouard, Ropagnol, Xavier, Morris, Denis and Blanchard, François. 2024. « Spatial and temporal thermal management of a spintronic terahertz emitter ». Applied Physics Express, vol. 17, nº 8.

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Abstract

This work presents methods for addressing undesirable thermal effects induced by the pump beam of an oscillator laser to improve the efficiency of a terahertz (THz) spintronic emitter. We explore two approaches: spatial distribution of pump energy using a 2D lens array and temporal modulation of the pump duty cycle. Optimizing the spatial distribution approximately doubles the THz signal by increasing local heat dissipation, delaying the saturation limit. Similarly, temporal spreading of pump pulses by adjusting the duty cycle allows greater thermal relaxation within the heterostructure, enhancing the overall efficiency of THz wave generation.

Item Type: Peer reviewed article published in a journal
Professor:
Professor
Blanchard, François
Affiliation: Génie électrique
Date Deposited: 10 Sep 2024 15:56
Last Modified: 28 Oct 2024 14:55
URI: https://espace2.etsmtl.ca/id/eprint/29436

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