Achieving High-Power Single-Mode Operation in Vertical-Cavity Surface-Emitting Lasers Via Scalable, Higher-Order Mode Suppression Techniques

John Michael Dallesasse, Patrick Su, Kevin Peter Pikul, Leah Espenhahn, Mark Kraman

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Achieving high-power single-mode operation in Vertical-Cavity Surface-Emitting Lasers (VCSELs) has received renewed interest due to performance needs driven by facial recognition and 3D imaging in mobile telephones. Two distinct mode control methods that rely on exploiting the spatial field distribution of optical transverse modes to achieve high-power single-mode operation in VCSELs will be discussed. The first method uses a surface-deposited optical coating of multilayer SiO2/TiO2 or single-layer silicon to achieve single-mode emission. The capability to pattern these layers in a wafer-scale process makes this method attractive for high-volume manufacturing. The second method utilizes impurity-induced layer disordering (IID) to selectively intermix the top distributed Bragg reflector (DBR) in a VCSEL, thereby creating a mirror whose reflectivity spatially varies across the aperture. Using these techniques, single-mode output power in excess of 10 mW has been demonstrated with side-mode suppression ratios in excess of 35 db.

Original languageEnglish (US)
Title of host publicationECS Transactions
PublisherInstitute of Physics
Pages15-26
Number of pages12
Edition5
ISBN (Electronic)9781607685395
DOIs
StatePublished - 2022
Event242nd ECS Meeting - Atlanta, United States
Duration: Oct 9 2022Oct 13 2022

Publication series

NameECS Transactions
Number5
Volume109
ISSN (Print)1938-6737
ISSN (Electronic)1938-5862

Conference

Conference242nd ECS Meeting
Country/TerritoryUnited States
CityAtlanta
Period10/9/2210/13/22

ASJC Scopus subject areas

  • General Engineering

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