First near-UV hybrid integrated laser in the Al2O3 platform

Cornelis Franken*, Ward Hendriks, Meindert Dijkstra, Adriano do Nascimento Jr., Lisa Winkler, Albert van Rees, Soheila Mardani, Ronald Dekker, Joost van Kerkhof, Peter van der Slot, Sonia García Blanco, Klaus Boller

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review


Hybrid integrated diode lasers offer a robust and small-sized solution for applications in telecommunications, quantum optics and metrology due to their wide tunability and ultra-narrow linewidth. Here, we present the fabrication, packaging and successful operation of the first fully integrated, aluminum oxide (Al2O3) based, hybrid diode laser operating at 405 nm. Low-loss, high-confinement waveguides are fabricated with a measured propagation loss of only 2.8 ± 0.3 dB/cm. The hybrid laser consists of a GaN SLED butt-coupled to an Al2O3 feedback circuit comprising of two microring resonators that form a frequency selective Vernier filter. The chip assembly is packaged in a hermetically sealed, butterfly housing for optimal performance and durability. The laser shows a maximum output power of 0.74 mW and is tunable over the entire gain bandwidth of 4.4 nm.
Original languageEnglish
Title of host publicationIntegrated Optics
Subtitle of host publicationDevices, Materials, and Technologies XXVII
EditorsSonia M. García-Blanco, Pavel Cheben
ISBN (Electronic)978-1-5106-5954-4
ISBN (Print)978-1-5106-5953-7
Publication statusPublished - 7 Apr 2023
EventSPIE Photonics West 2023 - The Moscone Center, San Fransisco, United States
Duration: 31 Jan 20232 Feb 2023

Publication series

NameProceedings of SPIE
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X


ConferenceSPIE Photonics West 2023
Country/TerritoryUnited States
CitySan Fransisco
Internet address


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