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Hybrid integrated near UV lasers using the deep-UV Al2O3 platform by Franken, C. A. A.; Hendriks, W. A. P. M.; Winkler, L. V.; Dijkstra, M.; Nascimento, A. R. do; van Rees, A.; Mardani, M. R. S.; Dekker, R.; van Kerkhof, J.; van der Slot, P. J. M.; García-Blanco, S. M.; Boller, K. -J. is a scholarly article available to read on EtoBox.

What is Hybrid integrated near UV lasers using the deep-UV Al2O3 platform about?

Hybrid integrated diode lasers have so far been realized using silicon, polymer, and silicon nitride (Si3N4) waveguide platforms for extending on-chip tunable light engines from the infrared throughout the visible range. Here we demonstrate the first hybrid integrated laser using the aluminum oxide (Al2O3) deep-UV capable waveguide platform. By permanently coupling low-loss Al2O3 frequency-tunable Vernier feedback circuits with GaN double-pass amplifiers in a hermetically sealed housing, we demonstrate the first extended cavity diode laser (ECDL) in the near UV. The laser shows a maximum fiber-coupled output power of 0.74 mW, corresponding to about 3.5 mW on chip, and tunes more than 4.4 nm in wavelength from 408.1 nm to 403.7 nm. Integrating stable, single-mode and tunable lasers into a deep-UV platform opens a new path for chip-integrated photonic applications.

Author

Franken, C. A. A.; Hendriks, W. A. P. M.; Winkler, L. V.; Dijkstra, M.; Nascimento, A. R. do; van Rees, A.; Mardani, M. R. S.; Dekker, R.; van Kerkhof, J.; van der Slot, P. J. M.; García-Blanco, S. M.; Boller, K. -J.

Published

2023

Language

EN