Single_Frequency_AlGaInN_PIC_Laser.pdf (757.42 kB)
Single-Frequency Violet and Blue Laser Emission from AlGaInN Photonic Integrated Circuit Chips
preprint
posted on 2023-02-01, 14:41 authored by Thomas Wunderer, Anat Siddharth, Noble Johnson, Christopher Chua, Mark Teepe, Zhihong Yang, Max Batres, Patrick Maeda, Grigorii Likhachev, Tobias KippenbergChip-based, single-frequency and low phase-noise integrated
photonic laser diodes emitting in the violet
(412 nm) and blue (461 nm) regime are demonstrated.
The GaN-based edge-emitting laser diodes were coupled
to high-Q on-chip micro-resonators for optical
feedback and mode selection resulting in laser self-injection
locking with narrow emission linewidth. Multiple
group III-nitride (III-N) based photonic integrated
circuit chips with different waveguide designs including
single-crystalline AlN, AlGaN, and GaN were developed
and characterized. Single-frequency laser operation
was demonstrated for all studied waveguide
core materials. The best side-mode suppression ratio
was determined to be ∼36 dB at 412 nm with a
single-frequency laser emission linewidth of only about
3.8 MHz at 461 nm. The performance metrics of this
novel type of laser suggest potential implementation in
next generation, portable quantum systems.