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Your search keyword '"Yu, Zhihao"' showing total 12 results
Start Over Author "Yu, Zhihao" Journal optics letters
12 results on '"Yu, Zhihao"'

11. Sourceless optical fiber high temperature sensor

Author

Tian, Zhipeng, Yu, Zhihao, Liu, Bo, and Wang, Anbo

Abstract

A sourceless sapphire fiber extrinsic Fabry–Perot interferometer for ultrahigh temperature sensing is developed. A sapphire wafer is mounted on the tip of a sapphire fiber as the Fabry–Perot cavity. The interference signal is generated by the thermal radiation that transmits through the wafer and is guided to a spectrometer by a sapphire and then a silica fiber. The entire sensor system is compact and low cost. The sensor was experimentally tested up to 1593°C, and a resolution around 1°C was achieved.

Published
2016

12. Second-harmonic generation divergence-a method for domain size evaluation of 2D materials.

Author

Deng J, Xu Z, Yu Z, and Zheng J

Abstract

Single-atomic-layered materials are important for future electronics. They allow optoelectronic devices to be fabricated at the single-atomic layer level. A single-atomic-layered two-dimensional (2D) transition metal dichalcogenide (TMD) film is usually composed of randomly orientated single-crystalline domains, and the size distribution of the domains on a large-area film has a significant impact on the applications of the film, but the impact is difficult to characterize. We report an approach to evaluate the size of the single-crystalline domains by measuring the second-harmonic generation divergence caused by the domains of different orientations. Using this method, domain size mapping on an 8×8 m m 2 region of a continuous M o S 2 film is achieved. This method provides a fast and efficient way of domain size characterization across a large area in a non-destructive and transfer-free manner for single-atomic-layered TMD films.

Published
2021
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