Growth, anisotropic spectroscopy and laser operation of the monoclinic Nd:KGd(PO3)4 crystal. (18th November 2015)

• Record Type: Journal Article
• Authors: Solé, Rosa Maria; Pujol, Maria Cinta; Massons, Jaume; Aguiló, Magdalena; Díaz, Francesc; Brenier, Alain
• Is Part Of: Journal of physics. Volume 48:Number 49(2015)
• Publication Date: 2015-11-18
• Subjects: laser materials -- nonlinear optical materials -- absorption -- emission; Physics -- Periodicals; 530
• DOI: 10.1088/0022-3727/48/49/495502
• Languages: English
• ISSNs: 0022-3727

Abstract

Abstract: Type III KGd(PO3 )4 and Nd:KGd(PO3 )4 single crystals have been successfully grown. We have proved that these crystals have a wide transparency window closing at 160 nm in the UV region and extending to 4 μ m in the IR region. We have determined that a slight rotation occurred for the dielectric frame in the 355–1064 nm range of wavelengths. We have measured the absorption in the 4 I9/2 → 4 F5/2 channel and the emission in the 4 F3/2 → 4 I11/2 channel. In addition to the three N p, N m, N g usual polarizations, a fourth spectroscopic parameter representing the framework rotation of the linear polarization imaginary part around the N p axis was needed for a full description. Lasing was obtained at 1052.4 nm in N p polarization (ordinary wave) for propagation in the N g − N m principal plane.