Multiphoton Upconversion Emission from Diamond Single Crystals

Yunfeng Wang, Wenfei Zhang, Chao Nan Lin, Pengpeng Ren, Ying Jie Lu, Chongxin Shan, Siu Fung Yu

Research output: Journal article publicationJournal articleAcademic researchpeer-review

9 Citations (Scopus)


Room-temperature upconversion emission up to eight-photon absorption is demonstrated from diamond single crystals under femtosecond laser excitation for the first time. The low concentration of defects and impurities is attributed to the support of free excitons emission at 235 nm. Nonlinear optical properties are also investigated by using an open-aperture Z-scan technique. The corresponding three-, five-, and eight-photon absorption coefficients of the diamonds are found to be 1.8 × 10-2cm3/GW2, 5 × 10-9cm7/GW4, and 1.6 × 10-19cm13/GW7, respectively. Considering its high hardness and high thermal conductivity, diamonds are a versatile nonlinear optical material suitable for high-power deep ultraviolet applications under multiphoton excitation.
Original languageEnglish
Pages (from-to)18935-18941
Number of pages7
JournalACS Applied Materials and Interfaces
Issue number22
Publication statusPublished - 6 Jun 2018


  • diamond single crystals
  • nonlinear optical absorption
  • nonlinear optics
  • photoluminescence
  • upconversion emission

ASJC Scopus subject areas

  • General Materials Science


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