DataVXAdvanced Optical MaterialsPaper
journal article·2018-08

Seven‐Photon‐Excited Upconversion Lasing at Room Temperature

Hai Zhu, An Q. Chen, Yan Y. Wu, Wen F. Zhang, Shi C. Su, Xu Ji, Peng T. Jing, Siu F. Yu, Chong X. Shan, Feng Huang

Advanced Optical Materials· Volume 6· Issue 16
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Source abstract

Abstract

Abstract In contrast to conventional harmonic generation, realized using nonlinear crystal, the multiphoton‐excited (MPE) laser has critical applications in fluorescence imaging probe and biological photonics. Here, lasing emission from a crystal plate under 7‐photon excitation at room temperature is reported for the first time, which is the highest order MPE lasing reported up to date. Moreover, MPE lasing spikes and high‐order harmonic peaks are observed simultaneously. The saturation behavior of harmonic generation and abnormal fluorescence enhancement identify that the interaction of photon–electron in 7‐photon‐excited lasing transits from photon‐excited to a more field‐driven regime. The results may pave the way for short wavelength laser by taking advantage of the processability and larger scale of solid crystals.
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Research context

OpenAlex topics: Nonlinear Optical Materials Studies · Laser-Matter Interactions and Applications · Advanced Fluorescence Microscopy Techniques

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Affiliations

State Key Laboratory of Optoelectronic Materials and Technologies School of Physics Sun Yat‐Sen University Guangzhou 510275 China

Department of Applied Physics the Hong Kong Polytechnic University Hung Hum Kowloon Hong Kong 999077 China

Institute of Optoelectronic Material and Technology South China Normal University Guangzhou 510631 China

Changchun Institute of Optics Fine Mechanics and Physics Chinese Academic Science Changchun 130033 China

State Key Laboratory of Optoelectronic Materials and Technologies School of Materials Science and Engineering Sun Yat‐Sen University Guangzhou 510275 China

Funding

National Natural Science Foundation of China

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