17–22 May 2026
C.I.D
Europe/Zurich timezone

Experimental Study on High-Power Continuous-Wave Optical Enhancement Cavities

THP3623
21 May 2026, 16:00
2h
C.I.D

C.I.D

Deauville, France
Poster Presentation MC3.T25: Advanced techniques/Novel sources: Lasers Poster session

Speaker

Yan Zhao (Tsinghua University)

Description

We present a four-mirror bowtie-type continuous-wave optical enhancement cavity capable of sustaining an average intracavity power exceeding 1 megawatt at a wavelength of 1064 nm for several minutes. The experiment achieved a maximum intracavity power of 1.15 MW, while the intracavity beam maintained a pure fundamental Gaussian lateral mode with an effective enhancement factor exceeding 9,000. We focus on the measurement and study of power stability, transverse mode shape, and phase noise levels of intracavity beam, as well as the thermal effects of the optical cavity, and discuss directions for improving high-power optical cavities. These results lay a solid foundation for future applications, such as steady-state microbunching extreme ultraviolet light sources and photo-neutralization systems in fusion reactor facilities.

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Authors

Lixin Yan (Tsinghua University) Xing Liu (Tsinghua University) Yan Zhao (Tsinghua University) Zhou Yang (Tsinghua University) yutong huang (Tsinghua University)

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