Hybrid integrated GaSb/Si3N4 narrow linewidth (<50 kHz) distributed Bragg reflector laser

Samu Pekka Ojanen; Nouman Zia; Jukka Viheriälä; Eero Koivusalo; Joonas Hilska; Ajwaad Quashef; Anders Wallin; Kalle Hanhijärvi; Thomas Fordell; Mircea Guina

doi:10.1063/5.0227303

Hybrid integrated GaSb/Si₃N₄ narrow linewidth (<50 kHz) distributed Bragg reflector laser

Samu Pekka Ojanen
, Nouman Zia
, Jukka Viheriälä
, Eero Koivusalo
, Joonas Hilska
, Ajwaad Quashef
, Anders Wallin
, Kalle Hanhijärvi
, Thomas Fordell
, Mircea Guina

Physics

Research output: Contribution to journal › Article › Scientific › peer-review

3 Citations (Scopus)

41 Downloads (Pure)

Abstract

A narrow linewidth hybrid integrated distributed Bragg reflector (DBR) laser platform operating at 2 μm wavelength region is demonstrated. The laser architecture comprises AlGaInAsSb/GaSb type-I quantum well reflective semiconductor optical amplifiers butt-coupled to a Si₃N₄ photonic integrated circuit (PIC), incorporating a narrow-band DBR. The DBR is realized with a long spiral-shaped waveguide structure with periodic circular posts placed adjacent to the waveguide. At room temperature operating conditions, the laser exhibits a maximum continuous wave output power of more than 17 mW for emission near 2 μm. Linewidth properties are analyzed with a heterodyne measurement technique, involving the mixing of the laser signal with a frequency comb phase-locked to an ultra-stable laser. The hybrid laser exhibits a narrow linewidth of ∼8 kHz in 1 ms timescale and ∼50 kHz in 10 ms timescale.

Original language	English
Article number	091106
Journal	Applied Physics Letters
Volume	125
Issue number	9
DOIs	https://doi.org/10.1063/5.0227303
Publication status	Published - 26 Aug 2024
Publication type	A1 Journal article-refereed

Publication forum classification

Publication forum level 3

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

Access to Document

10.1063/5.0227303Licence: CC BY

091106_1_5.0227303Final published version, 1.03 MBLicence: CC BY

https://urn.fi/URN:NBN:fi:tuni-202409108642Licence: CC BY

Cite this

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title = "Hybrid integrated GaSb/Si3N4 narrow linewidth (<50 kHz) distributed Bragg reflector laser",

abstract = "A narrow linewidth hybrid integrated distributed Bragg reflector (DBR) laser platform operating at 2 μm wavelength region is demonstrated. The laser architecture comprises AlGaInAsSb/GaSb type-I quantum well reflective semiconductor optical amplifiers butt-coupled to a Si3N4 photonic integrated circuit (PIC), incorporating a narrow-band DBR. The DBR is realized with a long spiral-shaped waveguide structure with periodic circular posts placed adjacent to the waveguide. At room temperature operating conditions, the laser exhibits a maximum continuous wave output power of more than 17 mW for emission near 2 μm. Linewidth properties are analyzed with a heterodyne measurement technique, involving the mixing of the laser signal with a frequency comb phase-locked to an ultra-stable laser. The hybrid laser exhibits a narrow linewidth of ∼8 kHz in 1 ms timescale and ∼50 kHz in 10 ms timescale.",

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T1 - Hybrid integrated GaSb/Si3N4 narrow linewidth (<50 kHz) distributed Bragg reflector laser

AU - Ojanen, Samu Pekka

AU - Zia, Nouman

AU - Viheriälä, Jukka

AU - Koivusalo, Eero

AU - Hilska, Joonas

AU - Quashef, Ajwaad

AU - Wallin, Anders

AU - Hanhijärvi, Kalle

AU - Fordell, Thomas

AU - Guina, Mircea

PY - 2024/8/26

Y1 - 2024/8/26

N2 - A narrow linewidth hybrid integrated distributed Bragg reflector (DBR) laser platform operating at 2 μm wavelength region is demonstrated. The laser architecture comprises AlGaInAsSb/GaSb type-I quantum well reflective semiconductor optical amplifiers butt-coupled to a Si3N4 photonic integrated circuit (PIC), incorporating a narrow-band DBR. The DBR is realized with a long spiral-shaped waveguide structure with periodic circular posts placed adjacent to the waveguide. At room temperature operating conditions, the laser exhibits a maximum continuous wave output power of more than 17 mW for emission near 2 μm. Linewidth properties are analyzed with a heterodyne measurement technique, involving the mixing of the laser signal with a frequency comb phase-locked to an ultra-stable laser. The hybrid laser exhibits a narrow linewidth of ∼8 kHz in 1 ms timescale and ∼50 kHz in 10 ms timescale.

AB - A narrow linewidth hybrid integrated distributed Bragg reflector (DBR) laser platform operating at 2 μm wavelength region is demonstrated. The laser architecture comprises AlGaInAsSb/GaSb type-I quantum well reflective semiconductor optical amplifiers butt-coupled to a Si3N4 photonic integrated circuit (PIC), incorporating a narrow-band DBR. The DBR is realized with a long spiral-shaped waveguide structure with periodic circular posts placed adjacent to the waveguide. At room temperature operating conditions, the laser exhibits a maximum continuous wave output power of more than 17 mW for emission near 2 μm. Linewidth properties are analyzed with a heterodyne measurement technique, involving the mixing of the laser signal with a frequency comb phase-locked to an ultra-stable laser. The hybrid laser exhibits a narrow linewidth of ∼8 kHz in 1 ms timescale and ∼50 kHz in 10 ms timescale.

U2 - 10.1063/5.0227303

DO - 10.1063/5.0227303

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