title: Monolithically integrated multi-wavelength VCSEL arrays using high-contrast gratings.
abstract: We propose a novel design for multi-wavelength arrays of vertical cavity surface-emitting lasers (VCSELs) using high-contrast gratings (HCGs) as top mirrors. A range of VCSEL cavity wavelengths in excess of 100 nm is predicted by modifying only the period and duty-cycle of the high-contrast gratings, while leaving the epitaxial layer thickness unchanged. VCSEL arrays fabricated with this novel design can easily accommodate the entire Er-doped fiber amplifier bandwidth with emission wavelengths defined solely by lithography with no restrictions in physical layout. Further, the entire process is identical to that of solitary VCSELs, facilitating cost-effective manufacturing.
authors.affiliation: Department of Electrical Engineering and Computer Science, University of California at Berkeley, Cory Hall, Berkeley, CA 94720, USA.
authors.forename: Vadim
authors.initials: V
authors.lastname: Karagodsky
authors.forename: Bala
authors.initials: B
authors.lastname: Pesala
authors.forename: Christopher
authors.initials: C
authors.lastname: Chase
authors.forename: Werner
authors.initials: W
authors.lastname: Hofmann
authors.forename: Fumio
authors.initials: F
authors.lastname: Koyama
authors.forename: Connie J
authors.initials: CJ
authors.lastname: Chang-Hasnain
mesh_terms: D004867:Equipment Design; D019544:Equipment Failure Analysis; D054023:Lasers, Semiconductor; D012031:Refractometry / Q000295:instrumentation*; D018511:Systems Integration