title: Optical characterization of directly deposited graphene on a dielectric substrate.
abstract: By using scanning multiphoton microscopy we compare the nonlinear optical properties of the directly deposited and transferred to the dielectric substrate graphene. The direct deposition of graphene on oxidized silicon wafer was done by utilizing sacrificial copper catalyst film. We demonstrate that the directly deposited graphene and bi-layered transferred graphene produce comparable third harmonic signals and have almost the same damage thresholds. Therefore, we believe directly deposited graphene is suitable for the use of e.g. nanofabricated optical setups.
authors.forename: Tommi
authors.initials: T
authors.lastname: Kaplas
authors.forename: Lasse
authors.initials: L
authors.lastname: Karvonen
authors.forename: Sepehr
authors.initials: S
authors.lastname: Ahmadi
authors.forename: Babak
authors.initials: B
authors.lastname: Amirsolaimani
authors.forename: Soroush
authors.initials: S
authors.lastname: Mehravar
authors.forename: Nasser
authors.initials: N
authors.lastname: Peyghambarian
authors.forename: Khanh
authors.initials: K
authors.lastname: Kieu
authors.forename: Seppo
authors.initials: S
authors.lastname: Honkanen
authors.forename: Harri
authors.initials: H
authors.lastname: Lipsanen
authors.forename: Yuri
authors.initials: Y
authors.lastname: Svirko