Polarized spectral properties of a notable Yb3+: LaCa4O(BO3)3 crystal

Abstract Yb3+: LaCa4O(BO3)3 single crystal, as a laser material with disordered structure, was successful grown by the Czochralski method. The important polarized spectra and laser performance parameters were analyzed in detail. The crystal has broad emission cross-section (FWHM = 57.1 nm for E‖Y) at 1029 nm, wide gain cross-section (FWHM = 42.0 nm for E‖Y) at 1029 nm, and long fluorescence lifetime of 2.88 ms, which are beneficial to the tunable laser emission and Q-switching ultra-short laser pulse. The results also report a lower pump threshold value which was calculated to be 0.4 kW/cm2 at 1029 nm compared with other well-known crystals.