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Spectral response of distributed-feedback resonators with a continuously distributed phase shift
KTH, School of Engineering Sciences (SCI), Applied Physics, Laser Physics.
KTH, School of Engineering Sciences (SCI), Applied Physics, Fotonik och mikrovågsteknik.
KTH, School of Engineering Sciences (SCI), Applied Physics, Materials and Nanophysics. (Visiting Scientist)
KTH, School of Engineering Sciences (SCI), Applied Physics.ORCID iD: 0000-0001-7688-1367
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2019 (English)In: 2019 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference, CLEO/Europe-EQEC 2019, Institute of Electrical and Electronics Engineers Inc. , 2019Conference paper, Published paper (Refereed)
Abstract [en]

Distributed-feedback (DFB) resonators [1, 2] are of interest for inherently producing narrow-linewidth laser emission, without the need of external cavities or filters. The single-frequency emission is obtained by designing an additional phase shift δφdesign of π/2, thereby producing a resonance that is spectrally located at the centre of the reflection band. Conventionally, δφdesign is introduced abruptly in the Bragg grating, but this method has the important disadvantage of causing spatial-hole burning in the laser resonator due to a high photon density where the phase shift is located. An attractive solution is to distribute the phase shift, e.g. by widening the waveguide region, thus increasing the effective refractive index.

Place, publisher, year, edition, pages
Institute of Electrical and Electronics Engineers Inc. , 2019.
National Category
Atom and Molecular Physics and Optics
Identifiers
URN: urn:nbn:se:kth:diva-272371DOI: 10.1109/CLEOE-EQEC.2019.8872970Scopus ID: 2-s2.0-85074661218ISBN: 9781728104690 (print)OAI: oai:DiVA.org:kth-272371DiVA, id: diva2:1426846
Conference
CLEO/EUROPE-EQEC, 23–27 June 2019, Munich, Germany, The 2019 Conference on Lasers & Electro-Optics / Europe and the European Quantum Electronics Conference (CLEO®/Europe-EQEC)
Note

QC 20200427

Available from: 2020-04-27 Created: 2020-04-27 Last updated: 2020-04-27Bibliographically approved

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Kores, Cristine C.Ismail, NurLaurell, FredrikPollnau, Markus

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