Multiwavelength laser action of Nd 3+:YAlO 3 single crystals grown by the laser heated pedestal growth method
We describe the growth of high quality transparent fibers of pure and Nd-doped YAlO 3 from unreacted pedestals (green rods) by the laser heated pedestal growth technique. The X-ray diffraction analysis shows that the fibers are monocrystalline, with a distorted Pnma perovskite structure and grow along <0 1 0> direction ( b axis). In this work, multi-wavelength laser action is demonstrated for these fibers in the two main laser channels of Nd 3+ ions. In the 4F 3/2 → 4I 11/2 laser transition, low threshold multi-wavelength laser emission is obtained at wavelengths of 1065, 1073 and 1081 nm. Additionally, for the first time in LHPG grown YAlO 3 fibers, laser action in the 4F 3/2 → 4I 13/2 transition is demonstrated at a wavelength of 1341 nm.