4.7 Article

Bridgman growth and characterization of a HoCa4O(BO3)3 crystal

Journal

CRYSTENGCOMM
Volume 23, Issue 27, Pages 4833-4839

Publisher

ROYAL SOC CHEMISTRY
DOI: 10.1039/d1ce00270h

Keywords

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Funding

  1. National Natural Science Foundation of China [51832009, 51772150]
  2. NSAF [U1930126]
  3. Strategic Priority Research Program of Chinese Academy of Sciences [XDA25020311]

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An HoCa4O(BO3)(3) crystal with a b-direction of 1 inch was successfully grown and analyzed for crystalline quality and structure, with wavelength settings for quasi-parametric chirped-pulse amplification (QPCPA) technology application identified. The study also investigated the specific heat, thermal diffusion coefficient, and thermal conductivity of the crystal to ensure it meets the requirements for QPCPA application.
RCa4O(BO3)(3) crystals (RCOB, R stands for rare earth elements) are an excellent class of nonlinear optical crystals. Herein, a 1 inch b-direction HoCa4O(BO3)(3) (HoCOB) crystal has been grown with the Bridgman method for the first time. The rocking curve was used to study the crystalline quality of the crystal, and the full width at half maximum (FWHM) of the rocking curve was 86.4 ''. The monoclinic unit cell parameters were found to be a = 8.0792 angstrom, b = 16.0114 angstrom, c = 3.5314 angstrom, and beta = 101.26 degrees, and the unit cell volume was calculated to be 448.0262 angstrom(3). The Raman spectra of HoCOB with different orientations were used to analyze the structure. According to the transmission spectrum of the HoCOB crystal, the wavelength of quasi-parametric chirped-pulse amplification (QPCPA) technology application was set. The wavelengths of the three interacting waves were set at 1060 nm (pump), 2255 nm (signal), and 2000 nm (idler), respectively. In addition, the specific heat, thermal diffusion coefficient, and thermal conductivity of the HoCOB crystal were investigated, and it can satisfy the requirements for QPCPA application.

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