Ga2O3 microwires as wide dynamical range temperature sensors

Manuel Alonso-Orts; Daniel Carrasco; José M. San Juan; María L. Nó; Alicia de Andrés; Emilio Nogales; Bianchi Méndez

doi:10.1117/12.2618319

5 March 2022 Ga₂O₃ microwires as wide dynamical range temperature sensors

Manuel Alonso-Orts, Daniel Carrasco, José M. San Juan, María L. Nó, Alicia de Andrés, Emilio Nogales, Bianchi Méndez

Proceedings Volume 12002, Oxide-based Materials and Devices XIII; 120020A (2022) https://doi.org/10.1117/12.2618319
Event: SPIE OPTO, 2022, San Francisco, California, United States

Abstract

In this work, we present our recent results on the applicability of optical microcavities based on Cr doped Ga₂O₃ wires to operate as a nanothermometer in a wide temperature range (at least from 150 up to 550 K) and achieving a temperature precision of around 1 K. To this purpose, DBR (distributed Bragg reflectors) have been used to enhance the reflectivity at the lateral ends of the wires. The transduction mechanism encompasses both the luminescence features of the characteristic R-lines of Cr³⁺ ions in this host as well as the interferometric effects of the Fabry-Perot resonances within the cavity.

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Citation Download Citation

Manuel Alonso-Orts, Daniel Carrasco, José M. San Juan, María L. Nó, Alicia de Andrés, Emilio Nogales, and Bianchi Méndez "Ga₂O₃ microwires as wide dynamical range temperature sensors", Proc. SPIE 12002, Oxide-based Materials and Devices XIII, 120020A (5 March 2022); https://doi.org/10.1117/12.2618319

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