title: Photo-chemical study and optical properties of microtips self- written on vertical laser diodes using NIR photo-polymerization.
abstract: Near infra-red (NIR) self-guided photo-polymerization is investigated in the context of micro-optics photo-fabrication on VCSELs (Vertical-Cavity Surface Emitting Lasers). We present the optimized process we have developed to allow for a collective fabrication on III-V devices wafers under real-time optical monitoring. The influence of photo-chemical parameters on final micro-elements dimensions is studied for two types of single mode 760 nm VCSELs. The difference of the resulting tip shape between the two lasers is due to the strong differences of their emissions, as they are nicely reproduced by the computed near-field profiles. The tip shapes are also compared to those produced by the light emitted by an optical fiber and differences with VCSEL tips are discussed. Also the VCSEL characteristics with fabricated tips are discussed and found in good agreement with optical modeling.
authors.affiliation: CNRS, LAAS, 7 avenue du colonel Roche, F-31400 Toulouse, France.
authors.forename: D
authors.initials: D
authors.lastname: Barat
authors.forename: V
authors.initials: V
authors.lastname: Bardinal
authors.forename: I
authors.initials: I
authors.lastname: Dika
authors.forename: O
authors.initials: O
authors.lastname: Soppera
authors.forename: P
authors.initials: P
authors.lastname: Debernardi
authors.forename: A
authors.initials: A
authors.lastname: Rumyantseva
authors.forename: B
authors.initials: B
authors.lastname: Reig
authors.forename: M
authors.initials: M
authors.lastname: Renault
authors.forename: T
authors.initials: T
authors.lastname: Camps
authors.forename: A
authors.initials: A
authors.lastname: Bruyant
authors.forename: J B
authors.initials: JB
authors.lastname: Doucet
authors.forename: J P
authors.initials: JP
authors.lastname: Malval
authors.forename: E
authors.initials: E
authors.lastname: Daran
mesh_terms: D007259:Infrared Rays; D054023:Lasers, Semiconductor; D054802:Molecular Imprinting / Q000379:methods*; D011108:Polymers / Q000737:chemistry* / Q000528:radiation effects*; D012031:Refractometry; D013499:Surface Properties
chemical_list: D011108:Polymers