title: Simulation of an erbium-doped chalcogenide micro-disk mid-infrared laser source.
abstract: The feasibility of mid-infrared (MIR) lasing in erbium-doped gallium lanthanum sulfide (GLS) micro-disks was examined. Lasing condition at 4.5 µm signal using 800 nm pump source was simulated using rate equations, mode propagation and transfer matrix formulation. Cavity quality (Q) factors of 1.48 × 10(4) and 1.53 × 10(6) were assumed at the pump and signal wavelengths, respectively, based on state-of-the-art chalcogenide micro-disk resonator parameters. With an 80 µm disk diameter and an active erbium concentration of 2.8 × 10(20) cm(-3), lasing was shown to be possible with a maximum slope efficiency of 1.26 × 10(-4) and associated pump threshold of 0.5 mW.
authors.affiliation: Material Science and Engineering, Masdar Institute of Science and Technology, Masdar City, Abu Dhabi, P.O. Box 54224, UAE. falehaltal@IEEE.org
authors.forename: Faleh
authors.initials: F
authors.lastname: Al Tal
authors.forename: Clara
authors.initials: C
authors.lastname: Dimas
authors.forename: Juejun
authors.initials: J
authors.lastname: Hu
authors.forename: Anu
authors.initials: A
authors.lastname: Agarwal
authors.forename: Lionel C
authors.initials: LC
authors.lastname: Kimerling
mesh_terms: D018011:Chalcogens / Q000737:chemistry*; D003198:Computer Simulation; D004867:Equipment Design; D004871:Erbium / Q000737:chemistry*; D005708:Gallium / Q000737:chemistry; D007259:Infrared Rays; D007811:Lanthanum / Q000737:chemistry; D053844:Lasers, Solid-State; D008962:Models, Theoretical; D013440:Sulfides / Q000737:chemistry
chemical_list: D018011:Chalcogens; D013440:Sulfides; D007811:Lanthanum; D004871:Erbium; D005708:Gallium