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Marinins, AleksandrsORCID iD iconorcid.org/0000-0002-0728-6684
Publications (10 of 19) Show all publications
Marinins, A., Udalcovs, A., Ozolins, O., Pang, X., Veinot, J. G., Jacobsen, G., . . . Popov, S. (2018). All-Optical Intensity Modulation in Polymer Waveguides Doped with Si Quantum Dots. In: 2018 conference on lasers and electro-optics (CLEO): . Paper presented at Conference on Lasers and Electro-Optics (CLEO), MAY 13-18, 2018, San Jose, CA. IEEE
Open this publication in new window or tab >>All-Optical Intensity Modulation in Polymer Waveguides Doped with Si Quantum Dots
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2018 (English)In: 2018 conference on lasers and electro-optics (CLEO), IEEE , 2018Conference paper, Published paper (Refereed)
Abstract [en]

We demonstrate all-optical intensity modulation in integrated PMMA optical waveguides doped with silicon quantum dots. The 1550 nm probe signal is absorbed by free carriers excited in silicon quantum dots with 405 nm pump light.

Place, publisher, year, edition, pages
IEEE, 2018
Series
Conference on Lasers and Electro-Optics, ISSN 2160-9020
National Category
Atom and Molecular Physics and Optics
Identifiers
urn:nbn:se:kth:diva-304011 (URN)000526031002093 ()978-1-9435-8042-2 (ISBN)
Conference
Conference on Lasers and Electro-Optics (CLEO), MAY 13-18, 2018, San Jose, CA
Note

Syskonpost

Not duplicate with Diva 1258716

QC 20211026

Available from: 2021-10-26 Created: 2021-10-26 Last updated: 2022-06-25Bibliographically approved
Marinins, A., Udalcovs, A., Ozolins, O., Pang, X., Veinot, J., Jacobsen, G., . . . Popov, S. (2018). All-optical intensity modulation in polymer waveguides doped with si quantum dots. 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 >>All-optical intensity modulation in polymer waveguides doped with si quantum dots
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2018 (English)In: Optics InfoBase Conference Papers, Optical Society of America, 2018Conference paper, Published paper (Refereed)
Abstract [en]

We demonstrate all-optical intensity modulation in integrated PMMA optical waveguides doped with silicon quantum dots. The 1550 nm probe signal is absorbed by free carriers excited in silicon quantum dots with 405 nm pump light.

Place, publisher, year, edition, pages
Optical Society of America, 2018
Keywords
Fiber optic sensors, Light modulation, Nanocrystals, Semiconductor quantum dots, Waveguides, 1550 nm, All optical, Free carriers, Polymer waveguides, Probe signals, Pump light, Si quantum dot, Silicon quantum dots, Optical signal processing
National Category
Atom and Molecular Physics and Optics
Identifiers
urn:nbn:se:kth:diva-236442 (URN)10.1364/CLEO_AT.2018.JW2A.31 (DOI)2-s2.0-85052563473 (Scopus ID)9781557528209 (ISBN)
Conference
CLEO: Applications and Technology, CLEO_AT 2018, 13 May 2018 through 18 May 2018
Note

QC 20181025

Available from: 2018-10-25 Created: 2018-10-25 Last updated: 2022-06-26Bibliographically approved
Dyakov, S. A., Zhigunov, D. M., Marinins, A., Shalygina, O. A., Vabishchevich, P. P., Shcherbakov, M. R., . . . Tikhodeev, S. G. (2018). Plasmon induced modification of silicon nanocrystals photoluminescence in presence of gold nanostripes. Scientific Reports, 8, Article ID 4911.
Open this publication in new window or tab >>Plasmon induced modification of silicon nanocrystals photoluminescence in presence of gold nanostripes
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2018 (English)In: Scientific Reports, E-ISSN 2045-2322, Vol. 8, article id 4911Article in journal (Refereed) Published
Abstract [en]

We report on the results of theoretical and experimental studies of photoluminescense of silicon nanocrystals in the proximity to plasmonic modes of different types. In the studied samples, the type of plasmonic mode is determined by the filling ratio of a one-dimensional array of gold stripes which covers the thin film with silicon nanocrystals on a quartz substrate. We analyze the extinction, photoluminesce spectra and decay kinetics of silicon nanocrystals and show that the incident and emitted light is coupled to the corresponding plasmonic mode. We demonstrate the modification of the extinction and photoluminesce spectra under the transition from wide to narrow gold stripes. The experimental extinction and photoluminescense spectra are in good agreement with theoretical calculations performed by the rigorous coupled wave analysis. We study the contribution of individual silicon nanocrystals to the overall photoluminescense intensity, depending on their spacial position inside the structure.

Place, publisher, year, edition, pages
NATURE PUBLISHING GROUP, 2018
National Category
Physical Sciences
Identifiers
urn:nbn:se:kth:diva-225716 (URN)10.1038/s41598-018-22633-x (DOI)000427820800031 ()29559692 (PubMedID)2-s2.0-85044281953 (Scopus ID)
Note

QC 20180411

Available from: 2018-04-11 Created: 2018-04-11 Last updated: 2024-03-15Bibliographically approved
Popov, S., Marinins, A., Sychugov, I., Yan, M., Vasileva, E., Li, Y., . . . Ozolins, O. (2018). Polymer photonics and nano-materials for optical communication. In: 2018 17TH WORKSHOP ON INFORMATION OPTICS (WIO): . Paper presented at 17th Workshop on Information Optics (WIO), JUL 16-19, 2018, Quebec, CANADA. Institute of Electrical and Electronics Engineers (IEEE)
Open this publication in new window or tab >>Polymer photonics and nano-materials for optical communication
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2018 (English)In: 2018 17TH WORKSHOP ON INFORMATION OPTICS (WIO), Institute of Electrical and Electronics Engineers (IEEE), 2018Conference paper, Published paper (Refereed)
Abstract [en]

Polymer materials offer process compatibility, design flexibility, and low cost technology as a multi-functional platform for optical communication and photonics applications. Design and thermal reflowing technology of low loss polymer waveguides, as well as demonstration of transparent wood laser are presented in this paper.

Place, publisher, year, edition, pages
Institute of Electrical and Electronics Engineers (IEEE), 2018
Series
Workshop on Information Optics, ISSN 2472-159X
Keywords
polymers, photonics, communication, wood, lasers
National Category
Polymer Chemistry
Identifiers
urn:nbn:se:kth:diva-249907 (URN)10.1109/WIO.2018.8643460 (DOI)000462765500008 ()2-s2.0-85063499703 (Scopus ID)978-1-5386-6013-3 (ISBN)
Conference
17th Workshop on Information Optics (WIO), JUL 16-19, 2018, Quebec, CANADA
Note

QC 20190503

Available from: 2019-05-03 Created: 2019-05-03 Last updated: 2024-03-18Bibliographically approved
Marinins, A., Ozolins, O., Pang, X., Udalcovs, A., Navarro, J. R., Kakkar, A., . . . Popov, S. (2018). Thermal Reflow Engineered Cylindrical Polymer Waveguides for Optical Interconnects. IEEE Photonics Technology Letters, 30(5), 447-450
Open this publication in new window or tab >>Thermal Reflow Engineered Cylindrical Polymer Waveguides for Optical Interconnects
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2018 (English)In: IEEE Photonics Technology Letters, ISSN 1041-1135, E-ISSN 1941-0174, Vol. 30, no 5, p. 447-450Article in journal (Refereed) Published
Abstract [en]

Integrated polymer photonics brings low cost and high fabrication flexibility to optoelectronic industry. However, this platform needs to overcome several issues to be effective enough for practical applications. In this letter, we experimentally demonstrate a decrease of propagation losses and polarization sensitivity of polymer waveguide-based devices as a result of thermal treatment. Heating of poly(methyl methacrylate) strip optical waveguides above the glass transition temperature initiates a waveguide surface reflow due to a decrease of the polymer viscosity and surface tension energy. This results in a decrease of surface roughness and shape change from rectangular to cylindrical. Thus, scattering losses and polarization sensitivity are minimized. 

Place, publisher, year, edition, pages
Institute of Electrical and Electronics Engineers Inc., 2018
Keywords
Integrated optics, optical interconnections, optical polymers, Esters, Glass transition, Light polarization, Optical interconnects, Optical sensors, Optical waveguides, Polarization, Surface roughness, Waveguide components, Waveguides, Integrated polymers, Optical attenuators, Optical device fabrication, Optoelectronic industry, Polarization sensitivity, Polymer waveguides, Waveguide surfaces, Polymers
National Category
Physical Sciences
Identifiers
urn:nbn:se:kth:diva-227403 (URN)10.1109/LPT.2018.2797685 (DOI)000429172600005 ()2-s2.0-85040999156 (Scopus ID)
Note

Export Date: 9 May 2018; Article; CODEN: IPTLE; Correspondence Address: Marinins, A.; School of Engineering Sciences, KTH Royal Institute of TechnologySweden; email: marinin@kth.se; Funding details: 608099; Funding details: SEAS, Harvard School of Engineering and Applied Sciences; Funding details: 324391; Funding details: 2016-04510; Funding details: Knut och Alice Wallenbergs Stiftelse; Funding details: KTH, Kungliga Tekniska Högskolan; Funding text: Manuscript received March 14, 2017; revised January 21, 2018; accepted January 22, 2018. Date of publication January 24, 2018; date of current version February 12, 2018. This work was supported in part by EU Project ICONE under Grant 608099, in part by the EU Project GRIFFON under Grant 324391, in part by the Swedish ICT-TNG Program, in part by the Vetenskapsrädet Project PHASE under Grant 2016-04510, and in part by the Knut and Alice Wallenberg Foundation. (Corresponding author: Aleksandrs Marinins.) A. Marinins, A. Kakkar, R. Schatz, and S. Popov are with the School of Engineering Sciences, KTH Royal Institute of Technology, 10044 Stockholm, Sweden (e-mail: marinin@kth.se; adityak@kth.se; rschatz@kth.se; sergeip@kth.se). QC 20180529

Available from: 2018-05-29 Created: 2018-05-29 Last updated: 2022-06-26Bibliographically approved
Marinins, A., Ozolins, O., Pang, X., Udalcovs, A., Navarro, J. R., Kakkar, A., . . . Popov, S. (2017). Cylindrical Polymer Optical Waveguides with Polarization Independent Performance. In: CLEO: Science and Innovations. Paper presented at CLEO - Conference on Lasers and Electro-Optics. OSA Publishing
Open this publication in new window or tab >>Cylindrical Polymer Optical Waveguides with Polarization Independent Performance
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2017 (English)In: CLEO: Science and Innovations, OSA Publishing , 2017Conference paper, Published paper (Refereed)
Abstract [en]

Heating of poly(methyl methacrylate) ridge optical waveguides slightly above glass transition temperature minimizes surface roughness and provides cylindrical shape. We experimentally demonstrate propagation loss decrease and polarization insensitivity as a result of waveguide thermal treatment.

Place, publisher, year, edition, pages
OSA Publishing, 2017
National Category
Atom and Molecular Physics and Optics Communication Systems
Identifiers
urn:nbn:se:kth:diva-215617 (URN)10.1364/CLEO_SI.2017.SF1J.6 (DOI)000427296202029 ()2-s2.0-85044237446 (Scopus ID)
Conference
CLEO - Conference on Lasers and Electro-Optics
Note

QC 20171106

Available from: 2017-11-02 Created: 2017-11-02 Last updated: 2024-03-18Bibliographically approved
Lobov, G. S., Marinins, A., Etcheverry, S., Zhao, Y., Vasileva, E., Sugunan, A., . . . Popov, S. (2017). Direct birefringence and transmission modulation via dynamic alignment of P3HT nanofibers in an advanced opto-fluidic component. Optical Materials Express, 7(1), 52-61
Open this publication in new window or tab >>Direct birefringence and transmission modulation via dynamic alignment of P3HT nanofibers in an advanced opto-fluidic component
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2017 (English)In: Optical Materials Express, E-ISSN 2159-3930, Vol. 7, no 1, p. 52-61Article in journal (Refereed) Published
Abstract [en]

Poly-3-hexylthiophene (P3HT) nanofibers are semiconducting high-aspect ratio nanostructures with anisotropic absorption and birefringence properties found at different regions of the optical spectrum. In addition, P3HT nanofibers possess an ability to be aligned by an external electric field, while being dispersed in a liquid. In this manuscript we show that such collective ordering of nanofibers, similar to liquid crystal material, significantly changes the properties of transmitted light. With a specially fabricated opto-fluidic component, we monitored the phase and transmission modulation of light propagating through the solution of P3HT nanofibers, being placed in the electric field with strength up to 0.1 V/μm. This report describes a technique for light modulation, which can be implemented in optical fiber-based devices or on-chip integrated components.

Keywords
Absorption spectroscopy, Aspect ratio, Birefringence, Electric fields, Light modulation, Liquid crystals, Modulation, Nanofibers, Optical fiber fabrication, Optical fibers, Anisotropic absorption, Birefringence property, External electric field, Fiber-based device, High aspect ratio nano-structures, Liquid crystal materials, Poly-3-hexylthiophene, Transmission modulation, Light transmission
National Category
Nano Technology
Identifiers
urn:nbn:se:kth:diva-202242 (URN)10.1364/OME.7.000052 (DOI)000392205600007 ()2-s2.0-85008157720 (Scopus ID)
Note

Funding text: European Union (EU) project ICONE (Grant #608099); Swedish Research Council (VR-SRL 2012-4421, VR-SRL 2013-6780); Swedish Foundation for Strategic Research (SSF, Grant no EM11-0002). The authors acknowledge Prof. Walter Margulis for fruitful discussions regarding optical fiber components and for his assistance in improving the quality of the manuscript. QC 20170320

Available from: 2017-03-20 Created: 2017-03-20 Last updated: 2025-03-06Bibliographically approved
Lobov, G., Marinins, A., Shafagh, R. Z., Zhao, Y., van der Wijngaart, W., Wosinski, L., . . . Popov, S. (2017). Electro-optical effects of high aspect ratio P3HT nanofibers colloid in polymer micro-fluid cells. Optics Letters, 42(11), 2157-2160
Open this publication in new window or tab >>Electro-optical effects of high aspect ratio P3HT nanofibers colloid in polymer micro-fluid cells
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2017 (English)In: Optics Letters, ISSN 0146-9592, E-ISSN 1539-4794, Vol. 42, no 11, p. 2157-2160Article in journal (Refereed) Published
Abstract [en]

This Letter reports the electro-optical (EO) effect of Poly(3-hexylthiophene-2,5-diyl) (P3HT) nanofibers colloid in a polymer micro-fluidic EO cell. P3HT nanofibers are high aspect ratio semiconducting nanostructures, and can be collectively aligned by an external alternating electric field. Optical transmission modulated by the electric field is a manifestation of the electro-optical effect due to high inner crystallinity of P3HT nanofibers. According to our results, the degree of alignment reaches a maximum at 0.6 V/μm of electric field strength, implying a big polarizability value due to geometry and electrical properties of P3HT nanofibers. We believe that one-dimensional crystalline organic nanostructures have a large potential in EO devices due to their significant anisotropy, wide variety of properties, low actuation voltages, and opportunity to be tailored via adjustment of the fabrication process.

Place, publisher, year, edition, pages
OSA Publishing, 2017
Keywords
P3HT, Nanofibers, optofluidics, reaction injectin molding, RIM, OSTE, micro-fluid cells
National Category
Nano Technology
Identifiers
urn:nbn:se:kth:diva-207850 (URN)10.1364/OL.42.002157 (DOI)000403534700027 ()28569870 (PubMedID)2-s2.0-85020417115 (Scopus ID)
Note

QC 20220329

Available from: 2017-05-27 Created: 2017-05-27 Last updated: 2025-03-06Bibliographically approved
Marinins, A., Zandi Shafagh, R., van der Wijngaart, W., Haraldsson, T., Linnros, J., G. C. Veinot, J., . . . Sychugov, I. (2017). Light Converting Polymer/Si Nanocrystal Composites with Stable 60-70% Quantum Efficiency and their Glass Laminates [Letter to the editor]. ACS Applied Materials and Interfaces, 9(36), 30267-30272
Open this publication in new window or tab >>Light Converting Polymer/Si Nanocrystal Composites with Stable 60-70% Quantum Efficiency and their Glass Laminates
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2017 (English)In: ACS Applied Materials and Interfaces, ISSN 1944-8244, E-ISSN 1944-8252, Vol. 9, no 36, p. 30267-30272Article in journal, Letter (Refereed) Published
Abstract [en]

Thiol-ene polymer/Si nanocrystal bulk hybrids were synthesized from alkyl-passivated Si nanocrystal (Si NC) toluene solutions. Radicals in the polymer provided a co-passivation of “dark” Si NCs, making them optically active and leading to a substantial ensemble quantum yield increase. Optical stability over several months was confirmed. The presented materials exhibit the highest photoluminescence quantum yield (~65%) of any solid-state Si NC hybrid reported to date. The broad tunability of thiol-ene polymer reactivity provides facile glass integration, as demonstrated by a laminated structure. This, together with extremely fast polymerization, makes the demonstrated hybrid material a promising candidate for light converting applications.

Place, publisher, year, edition, pages
American Chemical Society (ACS), 2017
Keywords
Si nanocrystals, polymers, photoluminescence, photovoltaics, hybrids, laminates, OSTE
National Category
Nano Technology
Identifiers
urn:nbn:se:kth:diva-213457 (URN)10.1021/acsami.7b09265 (DOI)000411043600006 ()28853276 (PubMedID)2-s2.0-85029458862 (Scopus ID)
Note

QC 20170831

Available from: 2017-08-31 Created: 2017-08-31 Last updated: 2024-03-15Bibliographically approved
Marinins, A., Knudde, N. & Popov, S. (2016). Air-Suspended SU-8 Strip Waveguides With High Refractive Index Contrast. IEEE Photonics Technology Letters, 28(17), 1862-1865
Open this publication in new window or tab >>Air-Suspended SU-8 Strip Waveguides With High Refractive Index Contrast
2016 (English)In: IEEE Photonics Technology Letters, ISSN 1041-1135, E-ISSN 1941-0174, Vol. 28, no 17, p. 1862-1865Article in journal (Refereed) Published
Abstract [en]

Integrated polymer photonics is efficient and cheap solution for many applications, such as optical communications and sensors. Waveguides are basic elements of photonic integrated circuits, and their performance directly influences optical circuit efficiency. However, it is a challenge to develop small footprint polymer waveguides with reasonable losses due to low refractive index comparing to cladding. In this letter, we present free-standing SU-8 waveguides with high refractive index contrast. SiO2 cladding is selectively etched, leaving only air as a cladding material; waveguides are supported by thin pillars. Removal of SiO2 cladding eliminates light leakage to substrate and provides better light confinement. Straight and bending SU-8 waveguides are numerically simulated and experimentally verified lambda = 1550 nm. We also report reduced propagation and bending losses in discussed waveguides.

Place, publisher, year, edition, pages
IEEE, 2016
Keywords
Optical polymers, optical strip waveguides
National Category
Physical Sciences
Identifiers
urn:nbn:se:kth:diva-190548 (URN)10.1109/LPT.2016.2573960 (DOI)000379881800017 ()2-s2.0-84978926966 (Scopus ID)
Note

QC 20160815

Available from: 2016-08-15 Created: 2016-08-12 Last updated: 2024-03-15Bibliographically approved
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ORCID iD: ORCID iD iconorcid.org/0000-0002-0728-6684

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