title: Facile production of up-converted quantum dot lasers.
abstract: We report a facile production of an up-converted surface-emitting DFB laser, performed by exploiting the versatility of sol-gel chemistry, the intriguing properties of well designed graded CdSe-CdS-Cd(0.5)Zn(0.5)S-ZnS colloidal quantum dots, and the scalability of nanoimprinting. Our laser prototype operates in the visible region following efficient optical pumping by either direct one-photon excitation or through the up-conversion of near infrared (NIR) light. By achieving cavity mode Q-factors in excess of 650 and retaining high lasing stabilities in air, this work highlights the feasibility of creating integrated lasing devices through solution based methods.
authors.affiliation: Dipartimento di Scienze Chimiche e U.R. INSTM, Università di Padova, Via Marzolo 1, I-35131 Padova, Italy.
authors.forename: Raffaella
authors.initials: R
authors.lastname: Signorini
authors.forename: Ilaria
authors.initials: I
authors.lastname: Fortunati
authors.forename: Francesco
authors.initials: F
authors.lastname: Todescato
authors.forename: Samuele
authors.initials: S
authors.lastname: Gardin
authors.forename: Renato
authors.initials: R
authors.lastname: Bozio
authors.forename: Jacek J
authors.initials: JJ
authors.lastname: Jasieniak
authors.forename: Alessandro
authors.initials: A
authors.lastname: Martucci
authors.forename: Gioia
authors.initials: G
authors.lastname: Della Giustina
authors.forename: Giovanna
authors.initials: G
authors.lastname: Brusatin
authors.forename: Massimo
authors.initials: M
authors.lastname: Guglielmi
mesh_terms: D019187:Cadmium Compounds / Q000737:chemistry; D005782:Gels / Q000737:chemistry; D007834:Lasers; D045663:Quantum Dots; D018036:Selenium Compounds / Q000737:chemistry; D013440:Sulfides / Q000737:chemistry; D017967:Zinc Compounds / Q000737:chemistry
chemical_list: D019187:Cadmium Compounds; D005782:Gels; D018036:Selenium Compounds; D013440:Sulfides; D017967:Zinc Compounds; C034939:cadmium sulfide; C058667:cadmium selenide; C031238:zinc sulfide