Physics in Laser Near-Field Nanomanufacturing: Fundamental Understanding and Novel Probing

Xu, Shen; Zhang, Lijun; Yue, Yanan; Wang, Xinwei

doi:10.1007/978-94-007-6178-0_100915-1

Cited by 1 publication

(1 citation statement)

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“…a few nm). The tip undergoes a thermal expansion upon pulsed laser irradiation, resulting in mechanical contact with the sample surface to form nano-indentation [26][27][28]. The tip could also act as a receiving antenna that collects laser energy and as a transmitting antenna to the tip to enhance the optical field by a few orders of magnitude.…”

Section: Introductionmentioning

confidence: 99%

Thermal behavior of materials in laser-assisted extreme manufacturing: Raman-based novel characterization

Wang

Yue

et al. 2020

Int. J. Extrem. Manuf.

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Laser-assisted manufacturing (LAM) is a technique that performs machining of materials using a laser heating process. During the process, temperatures can rise above over 2000 °C. As a result, it is crucial to explore the thermal behavior of materials under such high temperatures to understand the physics behind LAM and provide feedback for manufacturing optimization. Raman spectroscopy, which is widely used for structure characterization, can provide a novel way to measure temperature during LAM. In this review, we discuss the mechanism of Raman-based temperature probing, its calibration, and sources of uncertainty/error, and how to control them. We critically review the Raman-based temperature measurement considering the spatial resolution under near-field optical heating and surface structure-induced asymmetries. As another critical aspect of Raman-based temperature measurement, temporal resolution is also reviewed to cover various ways of realizing ultrafast thermal probing. We conclude with a detailed outlook on Raman-based temperature probing in LAM and issues that need special attention.

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Section: Introductionmentioning

confidence: 99%