Control of the spectral parameters of neodymium ions in anisotropic crystals with a scheelite structure

• Published in: Quantum electronics (Woodbury, N.Y.) Vol. 49; no. 6; pp. 570 - 576
• Main Authors: Shilova, G.V., Sirotkin, A.A., Zverev, P.G.
• Format: Journal Article
• Language: English
• Published: Bristol Kvantovaya Elektronika, Turpion Ltd and IOP Publishing 01.06.2019; IOP Publishing
• Subjects: anisotropic crystals; ANISOTROPY; BARIUM TUNGSTATES; Calcium compounds; CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; Crystal structure; CRYSTALS; dual-wavelength lasing; GAIN; LASERS; Lead molybdates; LITHIUM FLUORIDES; LUMINESCENCE; Neodymium; NEODYMIUM IONS; neodymium laser; ORIENTATION; Parameters; polarised luminescence spectrum; POLARIZATION; Scheelite; SPECTRA; STRONTIUM TUNGSTATES; WAVELENGTHS; YTTRIUM FLUORIDES
• ISSN: 1063-7818; 1468-4799
• DOI: 10.1070/QEL16896

The spectral parameters of neodymium ions in anisotropic YLiF4, SrMoO4, PbMoO4, CaMoO4, SrWO4, and BaWO4 crystals with a scheelite structure are experimentally studied in the region of 1 μm. The luminescence spectra of neodymium ions at the 4F3/2 → 4I11/2 transition in these crystals exhibit pronounced polarisation dependences. It is shown that, using different orientations of the active laser element and separating a particular radiation polarisation, one can control the spectral dependence of the active medium gain, switch the laser wavelength, and create dual-wavelength lasers. A dual-wavelength Nd3+ : YLiF4 laser emitting at λ = 1047 and 1053 nm with identical linear polarisations and good temporal and spatial matching is demonstrated.