Jesper Lægsgaard

Jesper Lægsgaard

Associate Professor

DTU FOTONIK
Department of Photonics Engineering

Fiber Optics, Devices and Non-linear Effects

Technical University of Denmark

Ørsteds Plads

Building 345A, room 272

2800 Kgs. Lyngby

Ph.
Fax +45 45 93 65 81
E-mail jlag@fotonik.dtu.dk

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2016
 

Progress in Cherenkov femtosecond fiber lasers

Liu, Xiaomin ; Svane, Ask Sebastian ; Lægsgaard, Jesper ; Tu, Haohua ; Boppart, Stephen A. ; Turchinovich, Dmitry
in journal: Journal of Physics D: Applied Physics (ISSN: 0022-3727) (DOI: http://dx.doi.org/10.1088/0022-3727/49/2/023001), vol: 49, issue: 2, 2016

Type: Journal article (Peer reviewed)

Status: Published     |    Year: 2016     |    DOI: http://dx.doi.org/10.1088/0022-3727/49/2/023001

 

Optimizing Yb concentration of fiber amplifiers in the presence of transverse modal instabilities and photodarkening

Lægsgaard, Jesper
in journal: Applied Optics (ISSN: 1559-128X) (DOI: http://dx.doi.org/10.1364/AO.55.001966), vol: 55, issue: 8, pages: 1966-1970, 2016

Type: Journal article (Peer reviewed)

Status: Published     |    Year: 2016     |    DOI: http://dx.doi.org/10.1364/AO.55.001966

 

Hollow-core fibers for high power pulse delivery

Michieletto, Mattia ; Lyngsø, Jens K. ; Jakobsen, Christian ; Lægsgaard, Jesper ; Bang, Ole ; Alkeskjold, Thomas Tanggaard
in journal: Optics Express (ISSN: 1094-4087) (DOI: http://dx.doi.org/10.1364/OE.24.007103), vol: 24, issue: 7, pages: 7103-7119, 2016

Type: Journal article (Peer reviewed)

Status: Published     |    Year: 2016     |    DOI: http://dx.doi.org/10.1364/OE.24.007103

 

High-power picosecond pulse delivery through hollow core photonic band gap fibers

Michieletto, Mattia ; Johansen, Mette Marie ; Lyngsø, Jens Kristian ; Lægsgaard, Jesper ; Bang, Ole ; Alkeskjold, Thomas T.
part of: Proceedings of SPIE, 2016, SPIE - International Society for Optical Engineering,
Presented at:
Fiber Lasers XIII: Technology, Systems, and Applications, 2016, San Francisco, California

Type: Article in proceedings (Peer reviewed)

Status: Published     |    Year: 2016     |    DOI: http://dx.doi.org/10.1117/12.2211324

2015
 

Optical frequency stabilization using gas-filled hollow-core photonic crystal fibers

Triches, Marco ; Hald, Jan ; Lyngsoe, Jens K. ; Bang, Ole ; Lægsgaard, Jesper
part of: 2014 Photonics Europe, pages: 90-91, 2015,
Presented at:
SPIE Photonics Europe 2014, 2014, Brussels

Type: Conference abstract in proceedings (Peer reviewed)

Status: Published     |    Year: 2015

 

Polarization switch of four-wave mixing in large mode area hybrid photonic crystal fibers

Petersen, Sidsel Rübner ; Alkeskjold, Thomas Tanggaard ; Olausson, Christina Bjarnal Thulin ; Lægsgaard, Jesper
in journal: Optics Letters (ISSN: 0146-9592) (DOI: http://dx.doi.org/10.1364/OL.40.000487), vol: 40, issue: 4, pages: 487-490, 2015

Type: Journal article (Peer reviewed)

Status: Published     |    Year: 2015     |    DOI: http://dx.doi.org/10.1364/OL.40.000487

 

Optical frequency standard using acetylene-filled hollow-core photonic crystal fibers

Triches, Marco ; Michieletto, Mattia ; Hald, Jan ; Lyngsø, Jens Kristian ; Lægsgaard, Jesper ; Bang, Ole
in journal: Optics Express (ISSN: 1094-4087) (DOI: http://dx.doi.org/10.1364/OE.23.011227), vol: 23, issue: 9, pages: 11227-11241, 2015

Type: Journal article (Peer reviewed)

Status: Published     |    Year: 2015     |    DOI: http://dx.doi.org/10.1364/OE.23.011227

 

Intermodal and cross-polarization four-wave mixing in large-core hybrid photonic crystal fibers

Petersen, Sidsel Rübner ; Alkeskjold, Thomas Tanggaard ; Olausson, Christina Bjarnal Thulin ; Lægsgaard, Jesper
in journal: Optics Express (ISSN: 1094-4087) (DOI: http://dx.doi.org/10.1364/OE.23.5954), vol: 23, issue: 5, pages: 5954-5971, 2015

Type: Journal article (Peer reviewed)

Status: Published     |    Year: 2015     |    DOI: http://dx.doi.org/10.1364/OE.23.5954

 

Interferometric characterization of few-mode fibers (FMF) for mode-division multiplexing (MDM)

Muliar, Olena ; Usuga Castaneda, Mario A. ; Rottwitt, Karsten ; Lægsgaard, Jesper
part of: Proceedings of SPIE (ISBN: 9781628414592), 2015, SPIE - International Society for Optical Engineering,
Presented at:
Photonic Instrumentation Engineering II, 2015, San Francisco, Ca

Type: Article in proceedings (Peer reviewed)

Status: Published     |    Year: 2015     |    DOI: http://dx.doi.org/10.1117/12.2079413

 

Large-mode-area hybrid photonic crystal fiber amplifier at 1178 nm

Petersen, Sidsel Rübner ; Chen, Mingchen ; Shirakawa, Akira ; Olausson, Christina Bjarnal Thulin ; Alkeskjold, Thomas Tanggaard ; Lægsgaard, Jesper
in journal: Optics Letters (ISSN: 0146-9592) (DOI: http://dx.doi.org/10.1364/OL.40.001741), vol: 40, issue: 8, pages: 1741-1744, 2015

Type: Journal article (Peer reviewed)

Status: Published     |    Year: 2015     |    DOI: http://dx.doi.org/10.1364/OL.40.001741