title: Optical spectroscopy, 1.06μm emission properties of Nd3+-doped phosphate based glasses.
abstract: Neodymium doped phosphate based glasses with composition of (P2O5+K2O+Al2O3+CaF2) were prepared. The samples were analysed through differential thermal analysis (DTA), Fourier transform infrared (FTIR), absorption, emission and decay measurements. Judd-Ofelt parameters (Ωλ) have been determined from the spectral intensities of absorption bands in order to calculate the radiative parameters like radiative transition probabilities (AR), radiative lifetime (τR) and branching ratios (βR) for the4F3/2→4I11/2laser transition of Nd3+ion. The effective emission bandwidths (Δλeff), experimental branching ratios (βexp) and stimulated emission cross-sections (σe) have been determined from the emission spectrum. The decay curves of the4F3/2level exhibited almost single exponential nature for all the Nd3+ion concentrations.
authors.affiliation: Department of Material Science and Engineering, Shenzhen Graduate School, Harbin Institute of Technology, Shenzhen 518055, China; Department of Physics, Rajeev Gandhi Memorial College of Engineering and Technology, Nandyal 518501, Andhra Pradesh, India. Electronic address: rasoolphysics08@gmail.com.
authors.forename: Rasool
authors.initials: R
authors.lastname: Sk Nayab
authors.affiliation: Department of Physics, Sree Vidyanikethan Engineering College, Sree Sainath Nagar College, A. Rangampet 517102, A.P., India.
authors.forename: Sasikala
authors.initials: S
authors.lastname: T
authors.affiliation: Department of Physics, Sri Venkateswara University, Tirupati 517502, India.
authors.forename: Mohan Babu
authors.initials: MB
authors.lastname: A
authors.affiliation: Department of Physics, Sri Venkateswara University, Tirupati 517502, India; Department of Physics, Chadalawada Ramanamma Engineering College, Renigunta Road, Tirupati 517506, India. Electronic address: lrmphysics@yahoo.co.in.
authors.forename: Rama Moorthy
authors.initials: RM
authors.lastname: L
authors.affiliation: Department of Physics, Chadalawada Ramanamma Engineering College, Renigunta Road, Tirupati 517506, India.
authors.forename: Jayasankar
authors.initials: J
authors.lastname: C K
keywords: DTA luminescence; Glasses; Judd-Ofelt parameters; Optical properties; Stimulated emission cross-section