title: Observation of transparency of Erbium-doped silicon nitride in photonic crystal nanobeam cavities.
abstract: One dimensional nanobeam photonic crystal cavities are fabricated in an Er-doped amorphous silicon nitride layer. Photoluminescence from the cavities around 1.54 microm is studied at cryogenic and room temperatures at different optical pump powers. The resonators demonstrate Purcell enhanced absorption and emission rates, also confirmed by time resolved measurements. Resonances exhibit linewidth narrowing with pump power, signifying absorption bleaching and the onset of stimulated emission in the material at both 5.5 K and room temperature. We estimate from the cavity linewidths that Er has been pumped to transparency at the cavity resonance wavelength.
authors.affiliation: Department of Electrical Engineering, Stanford University, Stanford, CA 94305, USA.
authors.forename: Yiyang
authors.initials: Y
authors.lastname: Gong
authors.forename: Maria
authors.initials: M
authors.lastname: Makarova
authors.forename: Selcuk
authors.initials: S
authors.lastname: Yerci
authors.forename: Rui
authors.initials: R
authors.lastname: Li
authors.forename: Martin J
authors.initials: MJ
authors.lastname: Stevens
authors.forename: Burm
authors.initials: B
authors.lastname: Baek
authors.forename: Sae Woo
authors.initials: SW
authors.lastname: Nam
authors.forename: Luca
authors.initials: L
authors.lastname: Dal Negro
authors.forename: Jelena
authors.initials: J
authors.lastname: Vuckovic
mesh_terms: D004581:Electronics / Q000295:instrumentation; D004867:Equipment Design; D004871:Erbium / Q000737:chemistry*; D008163:Luminescent Measurements / Q000295:instrumentation*; D008855:Microscopy, Electron, Scanning; D008962:Models, Theoretical; D036103:Nanotechnology / Q000295:instrumentation*; D055095:Optics and Photonics / Q000295:instrumentation*; D017655:Silicon Compounds / Q000737:chemistry*; D013696:Temperature
chemical_list: D017655:Silicon Compounds; D004871:Erbium; C032734:silicon nitride