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Publications (10 of 610) Show all publications
Yang, X., Lindberg, R., Larsson, J., Xu, C., Brydegaard, M., Bood, J. & Laurell, F. (2018). A 1.57 µm fiber source for atmospheric CO2 continuous-wave differential absorption lidar. In: : . Paper presented at Northern Optics and Photonics 2018.
Open this publication in new window or tab >>A 1.57 µm fiber source for atmospheric CO2 continuous-wave differential absorption lidar
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2018 (English)Conference paper, Poster (with or without abstract) (Refereed)
Abstract [en]

We present a simple turn-key fiber amplifier system which allows for a narrow wavelength tunability with a stable level of output power.  This system was used in continuous-wave differential absorption light detection and ranging (CW-DIAL) [1] to measure the atmospheric CO2-concentration in Lund. Preliminary experimental results are also presented.

National Category
Atom and Molecular Physics and Optics
Research subject
Physics
Identifiers
urn:nbn:se:kth:diva-235362 (URN)
Conference
Northern Optics and Photonics 2018
Note

QC 20181107

Available from: 2018-09-24 Created: 2018-09-24 Last updated: 2019-01-07Bibliographically approved
Lu, D., Peña, A., Segonds, P., Debray, J., Zukauskas, A., Laurell, F., . . . Boulanger, B. (2018). Angular quasi-phase-matching in a sphere of PPRKTP. In: Optics InfoBase Conference Papers: . Paper presented at Mid-Infrared Coherent Sources, MICS 2018, 26 March 2017 through 28 March 2017. Optical Society of America
Open this publication in new window or tab >>Angular quasi-phase-matching in a sphere of PPRKTP
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2018 (English)In: Optics InfoBase Conference Papers, Optical Society of America, 2018Conference paper, Published paper (Refereed)
Abstract [en]

we report the first measurements of angular quasi-phase-matching directions of secondharmonic generation performed in the periodically-poled Rb-doped KTiOPO4 biaxial crystal cut as a sphere.

Place, publisher, year, edition, pages
Optical Society of America, 2018
Keywords
Infrared devices, Optical parametric oscillators, Rubidium compounds, Titanium compounds, Biaxial crystal, KTiOPO4, Measurements of, Periodically poled, Quasi phase matching, Second-harmonic, Phase matching
National Category
Condensed Matter Physics
Identifiers
urn:nbn:se:kth:diva-236429 (URN)10.1364/MICS.2018.MT2C.5 (DOI)2-s2.0-85047169138 (Scopus ID)9781557528209 (ISBN)
Conference
Mid-Infrared Coherent Sources, MICS 2018, 26 March 2017 through 28 March 2017
Note

QC 20181025

Available from: 2018-10-25 Created: 2018-10-25 Last updated: 2018-10-25Bibliographically approved
Budriunas, R., Kucˇinskas, D., Stanislauskas, T., Gadonas, D., Viotti, A.-L., Zukauskas, A., . . . Varanavicˇius, A. (2018). Broadband noncollinear optical parametric amplification in GaSe pumped at 1.5μm. In: Optics InfoBase Conference Papers: . Paper presented at Mid-Infrared Coherent Sources, MICS 2018, 26 March 2017 through 28 March 2017. OSA - The Optical Society
Open this publication in new window or tab >>Broadband noncollinear optical parametric amplification in GaSe pumped at 1.5μm
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2018 (English)In: Optics InfoBase Conference Papers, OSA - The Optical Society , 2018Conference paper, Published paper (Refereed)
Abstract [en]

We demonstrate broadband parametric amplification in GaSe crystal in noncollinear geometry. Seed pulses spanning 1.5-2.6μm are produced by cascaded χ(2) nonlinearity in a periodically poled Rb:KTP crystal. Amplified pulse bandwidths supporting 10-15fs transformlimited pulse durations at ~2μm central wavelength are achieved.

Place, publisher, year, edition, pages
OSA - The Optical Society, 2018
Keywords
Band structure, Gallium compounds, Infrared devices, Layered semiconductors, Selenium compounds, Amplified pulse, Central wavelength, GaSe crystals, KTP crystals, Optical parametric amplification, Parametric amplification, Periodically poled, Transform-limited pulse, Optical parametric amplifiers
National Category
Atom and Molecular Physics and Optics
Identifiers
urn:nbn:se:kth:diva-236407 (URN)10.1364/MICS.2018.MW2C.2 (DOI)2-s2.0-85047117873 (Scopus ID)9781557528209 (ISBN)
Conference
Mid-Infrared Coherent Sources, MICS 2018, 26 March 2017 through 28 March 2017
Note

QC 20181026

Available from: 2018-10-26 Created: 2018-10-26 Last updated: 2018-12-04Bibliographically approved
Tian, J., Laurell, F., Pasiskevicius, V., Qiu, M. & Jang, H. (2018). Demonstration of terahertz ferroelectric metasurface using a simple and scalable fabrication method. Optics Express, 26(21), 27917-27930
Open this publication in new window or tab >>Demonstration of terahertz ferroelectric metasurface using a simple and scalable fabrication method
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2018 (English)In: Optics Express, ISSN 1094-4087, E-ISSN 1094-4087, Vol. 26, no 21, p. 27917-27930Article in journal (Refereed) Published
Abstract [en]

We report on experimental implementation of a ferroelectric metasurface using an x-cut KTiOPO4 (KTP) crystal for efficient manipulation of terahertz (THz) radiation. Based on the multipolar resonances that are accommodated in KTP micro-blocks in a square array, the metasurface is fabricated by precision diamond-blade dicing. Adjusting the size of the KTP micro-blocks to tailor the relative spectral positions of the anisotropic multipolar resonances, we demonstrate a subwavelength-thin THz polarizer that functions as a transparent film in the y-direction and a magnetic mirror in the z-direction with a transmission contrast of 13 dB near 0.37 THz (820 mu m). The ferroelectric-based all-dielectric metasurface will provide a versatile platform to engineer the THz waves in the far field and could potentially be combined with THz generation in the same material.

Place, publisher, year, edition, pages
Optical Society of America, 2018
National Category
Other Physics Topics
Identifiers
urn:nbn:se:kth:diva-238123 (URN)10.1364/OE.26.027917 (DOI)000447287700086 ()2-s2.0-85055031905 (Scopus ID)
Note

QC 20181120

Available from: 2018-11-20 Created: 2018-11-20 Last updated: 2018-12-07Bibliographically approved
Tian, J., Laurell, F., Pasiskevicius, V., Qiu, M. & Jang, H. (2018). Ferroelectric metasurfaces for THz Wave manipulation. In: 2018 Conference on Lasers and Electro-Optics, CLEO 2018 - Proceedings: . Paper presented at 2018 Conference on Lasers and Electro-Optics, CLEO 2018, San Jose, United States, 13 May 2018 through 18 May 2018. Institute of Electrical and Electronics Engineers (IEEE), Article ID 8427339.
Open this publication in new window or tab >>Ferroelectric metasurfaces for THz Wave manipulation
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2018 (English)In: 2018 Conference on Lasers and Electro-Optics, CLEO 2018 - Proceedings, Institute of Electrical and Electronics Engineers (IEEE), 2018, article id 8427339Conference paper, Published paper (Refereed)
Abstract [en]

We propose ferroelectric metasurfaces based on KTiOPO4 and demonstrate the fabrication procedures. It will provide a versatile platform for THz wave manipulation and open up new possibilities to monolithically combine it with THz generation.

Place, publisher, year, edition, pages
Institute of Electrical and Electronics Engineers (IEEE), 2018
National Category
Other Physics Topics
Identifiers
urn:nbn:se:kth:diva-234875 (URN)2-s2.0-85052564478 (Scopus ID)9781943580422 (ISBN)
Conference
2018 Conference on Lasers and Electro-Optics, CLEO 2018, San Jose, United States, 13 May 2018 through 18 May 2018
Note

QC 20180912

Available from: 2018-09-12 Created: 2018-09-12 Last updated: 2018-09-12Bibliographically approved
Tian, J., Laurell, F., Pasiskevicius, V., Qiu, M. & Jang, H. (2018). Ferroelectric metasurfaces for THz wave manipulation. In: Optics InfoBase Conference Papers: . Paper presented at CLEO: Applications and Technology, CLEO_AT 2018, 13 May 2018 through 18 May 2018. Optical Society of America
Open this publication in new window or tab >>Ferroelectric metasurfaces for THz wave manipulation
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2018 (English)In: Optics InfoBase Conference Papers, Optical Society of America, 2018Conference paper, Published paper (Refereed)
Abstract [en]

We propose ferroelectric metasurfaces based on KTiOPO4 and demonstrate the fabrication procedures. It will provide a versatile platform for THz wave manipulation and open up new possibilities to monolithically combine it with THz generation.

Place, publisher, year, edition, pages
Optical Society of America, 2018
National Category
Other Physics Topics
Identifiers
urn:nbn:se:kth:diva-238342 (URN)10.1364/CLEO_AT.2018.JW2A.82 (DOI)2-s2.0-85049144909 (Scopus ID)9781557528209 (ISBN)
Conference
CLEO: Applications and Technology, CLEO_AT 2018, 13 May 2018 through 18 May 2018
Note

QC 20181121

Available from: 2018-11-21 Created: 2018-11-21 Last updated: 2018-11-21Bibliographically approved
Gibson, U. J., Ballato, J., Peacock, A., Laurell, F. & Fokine, M. (2018). Future of semiconductor-core optical fibers. In: Optics InfoBase Conference Papers: . Paper presented at Specialty Optical Fibers, SOF 2018, 2 July 2018 through 5 July 2018. OSA - The Optical Society
Open this publication in new window or tab >>Future of semiconductor-core optical fibers
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2018 (English)In: Optics InfoBase Conference Papers, OSA - The Optical Society , 2018Conference paper, Published paper (Refereed)
Abstract [en]

Semiconductor-core optical fibers hold promise for long wavelength transmission systems as well as for nonlinear and active optoelectronic devices. This talk includes a status report on fiber properties and a prospectus of some future directions.

Place, publisher, year, edition, pages
OSA - The Optical Society, 2018
Keywords
Optoelectronic devices, Semiconductor devices, Fiber properties, Long wavelength, Optical fibers
National Category
Other Physics Topics
Identifiers
urn:nbn:se:kth:diva-236447 (URN)10.1364/SOF.2018.SoM2H.1 (DOI)2-s2.0-85051267741 (Scopus ID)9781557528209 (ISBN)
Conference
Specialty Optical Fibers, SOF 2018, 2 July 2018 through 5 July 2018
Note

QC 20181022

Available from: 2018-10-22 Created: 2018-10-22 Last updated: 2018-10-22Bibliographically approved
Canalias, C. C., Zukauskas, A., Tjörnhamman, S., Viotti, A.-L., Pasiskevicius, V. & Laurell, F. (2018). Highly efficient periodically poled KTP-isomorphs with large apertures and extreme domain aspect-ratios. In: Nonlinear Frequency Generation and Conversion: Materials and Devices XVII: . Paper presented at Nonlinear Frequency Generation and Conversion: Materials and Devices XVII 2018; San Francisco; United States; 29 January 2018 through 31 January 2018. SPIE - International Society for Optical Engineering, 10516, Article ID 105160W.
Open this publication in new window or tab >>Highly efficient periodically poled KTP-isomorphs with large apertures and extreme domain aspect-ratios
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2018 (English)In: Nonlinear Frequency Generation and Conversion: Materials and Devices XVII, SPIE - International Society for Optical Engineering, 2018, Vol. 10516, article id 105160WConference paper, Published paper (Refereed)
Abstract [en]

Since the early 1990's, a substantial effort has been devoted to the development of quasi-phased-matched (QPM) nonlinear devices, not only in ferroelectric oxides like LiNbO3, LiTaO3 and KTiOPO4 (KTP), but also in semiconductors as GaAs, and GaP. The technology to implement QPM structures in ferroelectric oxides has by now matured enough to satisfy the most basic frequency-conversion schemes without substantial modification of the poling procedures. Here, we present a qualitative leap in periodic poling techniques that allows us to demonstrate devices and frequency conversion schemes that were deemed unfeasible just a few years ago. Thanks to our short-pulse poling and coercive-field engineering techniques, we are able to demonstrate large aperture (5 mm) periodically poled Rb-doped KTP devices with a highly-uniform conversion efficiency over the whole aperture. These devices allow parametric conversion with energies larger than 60 mJ. Moreover, by employing our coercive-field engineering technique we fabricate highlyefficient sub-μm periodically poled devices, with periodicities as short as 500 nm, uniform over 1 mm-Thick crystals, which allow us to realize mirrorless optical parametric oscillators with counter-propagating signal and idler waves. These novel devices present unique spectral and tuning properties, superior to those of conventional OPOs. Furthermore, our techniques are compatible with KTA, a KTP isomorph with extended transparency in the mid-IR range. We demonstrate that our highly-efficient PPKTA is superior both for mid-IR and for green light generation-as a result of improved transmission properties in the visible range. Our KTP-isomorph poling techniques leading to highly-efficient QPM devices will be presented. Their optical performance and attractive damage thresholds will be discussed.

Place, publisher, year, edition, pages
SPIE - International Society for Optical Engineering, 2018
Series
Proceedings of SPIE - The International Society for Optical Engineering, ISSN 0277-786X ; 10516
Keywords
Counter-propagating interactions, KTP isomorphs, Large-Aperture, MOPO, Periodic poling, QPM devices
National Category
Other Physics Topics
Identifiers
urn:nbn:se:kth:diva-229334 (URN)10.1117/12.2288174 (DOI)000454223000018 ()2-s2.0-85047338956 (Scopus ID)9781510615175 (ISBN)
Conference
Nonlinear Frequency Generation and Conversion: Materials and Devices XVII 2018; San Francisco; United States; 29 January 2018 through 31 January 2018
Note

QC 20180604

Available from: 2018-06-04 Created: 2018-06-04 Last updated: 2019-01-15Bibliographically approved
Lindberg, R., Bogusławski, J., Pasternak, I., Przewłoka, A., Laurell, F., Pasiskevicius, V. & Sotor, J. (2018). Mapping Mode-Locking Regimes in a Polarization-Maintaining Er-Doped Fiber Laser. IEEE Journal of Selected Topics in Quantum Electronics, 24(3), 1-9
Open this publication in new window or tab >>Mapping Mode-Locking Regimes in a Polarization-Maintaining Er-Doped Fiber Laser
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2018 (English)In: IEEE Journal of Selected Topics in Quantum Electronics, ISSN 1077-260X, E-ISSN 1558-4542, Vol. 24, no 3, p. 1-9Article in journal (Refereed) Published
Abstract [en]

We present the performance of an all polarization-maintaining Erbium-doped fiber laser mode-locked by a multilayer graphene based saturable absorber. The cavity incorporates a Martinez-type compressor, based on a transmission grating, which allows for continuous tuning of the net cavity dispersion as well as spectral filtering. By adjusting the dispersion and the spectral bandwidth, we could operate the laser in the soliton, the dispersion managed soliton and the absorber-limited pulse regimes. The pulse durations from the laser ranged between 338 fs to 2.1 ps and the laser could be operated at nearly constant output powers in the anomalous and the normal dispersion regimes. We also conducted stability analyses based on dispersive Fourier transform measurements in the different operating regimes. Comparison of the collected spectra reveals that the soliton regime had the best overall stability.

Place, publisher, year, edition, pages
IEEE Press, 2018
National Category
Atom and Molecular Physics and Optics
Research subject
Physics
Identifiers
urn:nbn:se:kth:diva-221176 (URN)10.1109/JSTQE.2017.2769057 (DOI)000422766800001 ()2-s2.0-85033727301 (Scopus ID)
Note

QC 20180116

Available from: 2018-01-15 Created: 2018-01-15 Last updated: 2018-03-13Bibliographically approved
Viotti, A.-L., Lindberg, R., Zukauskas, A., Budriunas, R., Kucinskas, D., Stanislauskas, T., . . . Pasiskevicius, V. (2018). Mid-IR supercontinuum generation and cascaded soliton self-compression in χ^((2))-modulated KTiOPO4. In: NorthernOptics2018 proceedings   Photonics Sweden: . Paper presented at Northern Optics & Photonics 2018, 12-14 September 2018.
Open this publication in new window or tab >>Mid-IR supercontinuum generation and cascaded soliton self-compression in χ^((2))-modulated KTiOPO4
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2018 (English)In: NorthernOptics2018 proceedings   Photonics Sweden, 2018Conference paper, Oral presentation with published abstract (Refereed)
National Category
Atom and Molecular Physics and Optics
Identifiers
urn:nbn:se:kth:diva-235471 (URN)
Conference
Northern Optics & Photonics 2018, 12-14 September 2018
Note

QC 20181129

Available from: 2018-09-26 Created: 2018-09-26 Last updated: 2018-11-29Bibliographically approved
Organisations
Identifiers
ORCID iD: ORCID iD iconorcid.org/0000-0001-7688-1367

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