Magnus Engholm

Publications

Articles in journals
Articles, reviews/surveys
Conference papers
Doctoral theses, comprehensive summaries
Manuscripts

Articles in journals

Chen, C. -. , Meehan, B. , Cahoon, M. A. , Hawkins, T. W. , Ballato, J. , Dragic, P. D. , Engholm, M. , Boilard, T. & et al. (2025). Emerging trends in laser-cooling of Yb-doped silicate fibers. Journal of Lightwave Technology,  

Meehan, B. , Pietros, A. R. , Chen, C. -. , Hawkins, T. W. , Engholm, M. , Dragic, P. D. , Digonnet, M. J. F. & Ballato, J. (2024). Impact of Yb2+ on the anti-Stokes fluorescence cooling performance of Yb-doped silica fibers. Optical Materials Express, vol. 14: 8, pp. 2095-2111.  

Bond, L. , Andersson, H. , Hummelgård, M. & Engholm, M. (2024). Laser-formed nanoporous graphite anodes for enhanced lithium-ion battery performance. Applied Physics Letters, vol. 125: 18  

Dahlström, C. , Duan, R. , Eivazi, A. , Magalhães, S. , Alves, L. , Engholm, M. , Svanedal, I. , Edlund, H. & et al. (2024). Stacking self-gluing cellulose II films : A facile strategy for the formation of novel all-cellulose laminates. Carbohydrate Polymers, vol. 344    

Vigneron, P. , Meehan, B. , Cahoon, M. A. , Hawkins, T. W. , Ballato, J. , Dragic, P. D. , Engholm, M. , Boilard, T. & et al. (2022). Anti-Stokes fluorescence cooling of nanoparticle-doped silica fibers. Optics Letters, vol. 47: 10, pp. 2590-2593.  

Balliu, E. , Engholm, M. , Digonnet, M. J. F. & Nilsson, H. (2022). Quasi‐cw pumping of a single‐frequency fiber amplifier for efficient shg in ppln crystals with reduced thermal load. Applied Sciences, vol. 12: 1    

Balliu, E. , Engholm, M. , Digonnet, M. J. F. , Coetzee, R. S. , Elgcrona, G. & Nilsson, H. (2021). Compact single-frequency mopa using a silica fiber highly doped with yb3+. Applied Sciences, vol. 11: 21    

Hawkins, T. W. , Dragic, P. D. , Yu, N. , Flores, A. , Engholm, M. & Ballato, J. (2021). Kilowatt power scaling of an intrinsically low Brillouin and thermo-optic Yb-doped silica fiber. Journal of the Optical Society of America. B, Optical physics, vol. 38: 12, pp. F38-F49.  

Engholm, M. , TUGGLE, M. , KUCERA, C. , HAWKINS, T. , DRAGIC, P. & BALLATO, J. (2021). On the origin of photodarkening resistance in Yb-doped silica fibers with high aluminum concentration. Optical Materials Express, vol. 11: 1, pp. 115-126.    

Knall, J. M. , Engholm, M. , Boilard, T. , Bernier, M. & Digonnet, M. J. F. (2021). Radiation-Balanced Silica Fiber Amplifier. Physical Review Letters, vol. 127: 1  

Knall, J. , Engholm, M. , Boilard, T. , Bernier, M. , Vigneron, P. -. , Yu, N. , Dragic, P. D. , Ballato, J. & et al. (2021). Radiation-balanced silica fiber laser. Optica, vol. 8: 6, pp. 830-833.    

Knall, J. , Engholm, M. , Ballato, J. , Dragic, P. D. , Yu, N. & Digonnet, M. J. F. (2020). Experimental comparison of silica fibers for laser cooling. Optics Letters, vol. 45: 14, pp. 4020-4023.  

Knall, J. , Vigneron, P. , Engholm, M. , Dragic, P. D. , Yu, N. , Ballato, J. , Bernier, M. & Digonnet, M. J. F. (2020). Laser cooling in a silica optical fiber at atmospheric pressure. Optics Letters, vol. 45: 5, pp. 1092-1095.  

Balliu, E. , Boetti, N. G. , Pugliese, D. , Lousteau, J. , Engholm, M. , Milanese, D. & Nilsson, H. (2020). Single-frequency, pulsed Yb³⁺-doped multicomponent phosphate power fiber amplifier. Journal of Optics, vol. 22: 11  

Engholm, M. , Hammarling, K. , Andersson, H. , Sandberg, M. & Nilsson, H. (2019). A Bio-Compatible Fiber Optic pH Sensor Based on a Thin Core Interferometric Technique. Photonics, vol. 6: 1    

Andersson, H. , Šuly, P. , Thungström, G. , Engholm, M. , Zhang, R. , Mašlík, J. & Olin, H. (2019). PEDOT : PSS thermoelectric generators printed on paper substrates. Journal of Low Power Electronics and Applications, vol. 9: 2    

Zhang, R. , Hummelgård, M. , Örtegren, J. , Yang, Y. , Andersson, H. , Balliu, E. , Blomquist, N. , Engholm, M. & et al. (2019). Sensing body motions based on charges generated on the body. Nano Energy, vol. 63  

Hammarling, K. , Engholm, M. , Andersson, H. , Sandberg, M. & Nilsson, H. (2018). Broad-Range Hydrogel-Based pH Sensor with Capacitive Readout Manufactured on a Flexible Substrate. Chemosensors, vol. 6: 3    

Zhang, R. , Engholm, M. , Hummelgård, M. , Andersson, H. , Örtegren, J. & Olin, H. (2018). High-performance transparent and flexible electrodes made by flash-light sintering of gold nanoparticles. ACS Applied Energy Materials, vol. 1: 12, pp. 7191-7198.  

Zhang, R. , Hummelgård, M. , Forsberg, V. , Andersson, H. , Engholm, M. , Öhlund, T. , Olsen, M. , Örtegren, J. & et al. (2018). Photoconductivity of acid exfoliated and flash-light-processed MoS2 films. Scientific Reports, vol. 8    

Zhang, R. & Engholm, M. (2018). Recent Progress on the Fabrication and Properties of Silver Nanowire-Based Transparent Electrodes. Nanomaterials, vol. 8: 8    

Balliu, E. , Andersson, H. , Engholm, M. , Öhlund, T. , Nilsson, H. & Olin, H. (2018). Selective laser sintering of inkjet-printed silver nanoparticle inks on paper substrates to achieve highly conductive patterns. Scientific Reports, vol. 8: 1    

Hammarling, K. , Sandberg, M. , Engholm, M. , Andersson, H. & Nilsson, H. (2018). Synthesis, Curing Behavior and Swell Tests of pH-Responsive Coatings from Acryl-Terminated Oligo(beta-Amino Esters). CHEMOSENSORS, vol. 6: 1    

Rydberg, S. & Engholm, M. (2013). Charge transfer processes and UV induced absorption in Yb:YAG single crystal laser materials. Optical Materials Express, vol. 113: 22, pp. Art. no. 223510    

Rydberg, S. & Engholm, M. (2013). Experimental evidence for the formation of divalent Ytterbium in the photodarkening process of Yb-doped fiber lasers. Optics Express, vol. 21: 6, pp. 6681-6688.    

Engholm, M. , Jelger, P. , Laurell, F. & Norin, L. (2009). Improved photodarkening resistivity in ytterbium-doped fiber lasers by cerium codoping. Optics Letters, vol. 34: 8, pp. 1285-1287.  

Engholm, M. & Norin, L. (2008). Preventing Photodarkening in Ytterbium-Doped High Power Fiber Lasers; Correlation to the UV-Transparency of the Core Glass. Optics Express, vol. 16: 2, pp. 1260-1268.  

Engholm, M. & Norin, L. (2007). Comment on:"Photodarkeningin Yb-doped aluminosilicate fiber induced by 488nm irradiation". Optical Letter, vol. 33: 11, pp. 1216.

Engholm, M. & Norin, L. (2007). Strong UV absorption and visible luminescence in ytterbium-doped aluminosilicate glass under UV excitation. Optics Letters, vol. 32: 22, pp. 3352-3354.  

Engholm, M. , Norin, L. , Edvardsson, S. , Lashgari, K. & Westin, G. (2006). A structural investigation of a synthesized precursor for fiber optical applications; the heterobimetallic ErNb_2(OPr^i)_13. Optical materials (Amsterdam), vol. 29: 4, pp. 386-391.  

Engholm, M. , Lashgari, K. , Edvardsson, S. , Westin, G. & Norin, L. (2005). Atomically designed precursors in optical fiber amplifiers : The thermal stability of the heteroimetallic ErAl_3(OPri)_12 in a solution-coated silica soot. Journal of Applied Physics, vol. 97: 11, pp. 113104  

Åberg, D. , Edvardsson, S. & Engholm, M. (2003). Direct calculation of correlated absorption amplitudes for Nd:LiYF4. Physical Review B. Condensed Matter and Materials Physics, vol. 68: 19  

Edvardsson, S. , Karlsson, K. G. & Engholm, M. (2002). Accurate spin axes and solar system dynamics: climatic variations for the Earth and Mars. Astronomy & Astrophysics, vol. 384: 2, pp. 689-701.  

Articles, reviews/surveys

Maslik, J. , Andersson, H. , Forsberg, V. , Engholm, M. , Zhang, R. & Olin, H. (2018). PEDOT:PSS temperature sensor ink-jet printed on paper substrate. Journal of Instrumentation, vol. 13  

Conference papers

Bond, L. , Andersson, H. , Örtegren, J. , Larsson, M. & Engholm, M. (2024). Electrically conductive polymer-graphene composite material for selective laser sintering additive manufacturing. In Progress in Biomedical Optics and Imaging - Proceedings of SPIE.  

Meehan, B. , Hawkins, T. W. , Engholm, M. , Dragic, P. D. , Knall, J. , Digonnet, M. J. F. & Ballato, J. (2024). Hydroxyl influences on silica fiber photonic heat engines. In Proc. SPIE 12902, Photonic Heat Engines: Science and Applications VI.

Bond, L. , Andersson, H. & Engholm, M. (2024). Laser-assisted processing of nano-graphite/silicon anode materials for improved performance of Li-ion batteries. In Progress in Biomedical Optics and Imaging - Proceedings of SPIE.  

Bond, L. , Jönsson, E. & Engholm, M. (2024). Production of Yb:YVO4 nanoparticles by pulsed laser ablation in liquid using a femtosecond laser. In Progress in Biomedical Optics and Imaging - Proceedings of SPIE.  

Frey, B. N. , Balliu, E. , Vigneron, P. -. , Knall, J. , Hawkins, T. W. , Meehan, B. , Cahoon, M. A. , Ballato, J. & et al. (2023). Cooling Yb-Doped Silica Fibers and Fiber Lasers with Anti-Stokes Pumping. In Proceedings of SPIE - The International Society for Optical Engineering.  

Ballato, J. , Hawkins, T. W. , Dragic, P. D. , Engholm, M. , Digonnet, M. J. F. & Dong, L. (2023). Material approaches to thermal management in advanced fiber lasers and amplifiers. In Proceedings of SPIE - The International Society for Optical Engineering.  

Vigneron, P. , Meehan, B. , Cahoon, M. A. , Hawkins, T. W. , Ballato, J. , Dragic, P. D. , Engholm, M. , Boilard, T. & et al. (2022). Anti-Stokes Cooling of Nanoparticle-Doped Silica Fibers. In PHOTONIC HEAT ENGINES : SCIENCE AND APPLICATIONS IV. (Proceedings of SPIE)  

Knall, J. M. , Vigneron, P. -. , Engholm, M. , Dragic, P. D. , Yu, N. , Ballato, J. , Bernier, M. & Digonnet, M. (2020). Experimental observation of cooling in Yb-doped silica fibers. In Proceedings of SPIE - The International Society for Optical Engineering.  

Balliu, E. , Engholm, M. & Nilsson, H. (2019). A compact, single-frequency, high-power, SBS-free, Yb-doped single-stage fiber amplifier. In Proceedings of SPIE - The International Society for Optical Engineering.. pp. 6pp-  

Hammarling, K. , Muri, H. I. , Wahl, M. S. , Engholm, M. & Hjelme, D. R. (2018). A combined glucose and pH sensor on a single optical fiber for continuous point-of-care testing. In SPIE BIOS, Optical Fibers and Sensors for Medical Diagnostics and Treatment Applications XVIII.

Muri, H. I. , Hammarling, K. , Wahl, M. , Engholm, M. & Hjelme, D. R. (2018). Combining interferometric sensors for dual parameter fiber optic chemical sensing. In Optics InfoBase Conference Papers.    

Forsberg, V. , Andersson, H. , Engholm, M. , Thungström, G. , Zhang, R. , Hummelgård, M. , Olin, H. & Norgren, M. (2018). Photodetector of multilayer exfoliated MoS2 deposited on polyimide films. Paper presented at the 20th International Workshop on Radiation Imaging Detectors, Sundsvall, 24-28 June, 2018

Mazlik, J. , Andersson, H. , Forsberg, V. , Engholm, M. , Zhang, R. & Olin, H. (2018). Temperature sensor based on PEDOT : PSS ink-jet printed on paper substrate. Paper presented at the 20th International Workshop on Radiation Imaging Detectors, Sundsvall, 24-28 June, 2018

Hammarling, K. , Engholm, M. , Muri, H. I. , Wahl, M. S. & Hjelme, D. R. (2017). Dual parameter fiber optic sensor combining a Fabry-Perot and a Mach-Zehnder interferometer. In Proceedings of IEEE Sensors. (IEEE Sensors). pp. 1440--1442.  

Balliu, E. , Andersson, H. , Engholm, M. , Zhang, R. , Forsberg, S. & Olin, H. (2016). Laser processing of graphene oxide on different coated paper substrates. In 14th TAPPI Advanced Coating Symposium 2016.. pp. 97--101.

Balliu, E. , Andersson, H. , Engholm, M. , Forsberg, S. & Olin, H. (2016). Laser-assisted reduction of graphene oxide for paper based large area flexible electronics. In Proceedings of SPIE - The International Society for Optical Engineering.  

Balliu, E. , Andersson, H. , Hummelgård, M. , Olin, H. & Engholm, M. (2015). Laser sintering of silver nano-particles inks printed on paper substrates. In Proceedings of SPIE - The International Society for Optical Engineering.. pp. Art. no. 935112-  

Balliu, E. , Engholm, M. , Hellström, J. , Elgcrona, G. & Karlsson, H. (2014). Compact nanosecond pulsed single stage Yb-doped fiber amplifier. In Proceedings of SPIE - The International Society for Optical Engineering.. pp. Art. no. 895910-  

Norin, L. & Engholm, M. (2013). On the origin of color centers in photodarkened Yb-fibers. In Optics InfoBase Conference Papers. (Optics InfoBase Conference Papers)  

Engholm, M. , Rydberg, S. & Hammarling, K. (2013). Strong excited state absorption (ESA) in Yb-doped fiber lasers. In FIBER LASERS X: TECHNOLOGY, SYSTEMS, AND APPLICATIONS. (Proceedings of SPIE). pp. Art. no. 86010P-  

Rydberg, S. C. & Engholm, M. (2012). Photodarkening mechanisms in ytterbium fiber lasers; a comparison of UV-induced losses in glass and crystalline materials. In 2012 Conference on Lasers and Electro-Optics, CLEO 2012.. pp. Art. no. 6326558-  

Zeil, P. , Malmstrom, M. , Engholm, M. , Jelger, P. , Jacobsson, B. , Pasiskevicius, V. & Laurell, F. (2011). Extended tunability of narrow-linewidth Yb-fiber laser. In 2011 Conference on Lasers and Electro-Optics: Laser Science to Photonic Applications, CLEO 2011.. pp. Art. no. 5950619-

Engholm, M. & Norin, L. (2009). The role of charge transfer processes for the induced optical lossesin ytterbium doped fiber lasers. In The role of charge transfer processes for the induced optical lossesin ytterbium doped fiber lasers.

Engholm, M. & Norin, L. (2008). Materials optimization for ytterbium-doped high power fiber lasers. In 2008 CONFERENCE ON LASERS AND ELECTRO-OPTICS & QUANTUM ELECTRONICS AND LASER SCIENCE CONFERENCE, VOLS 1-9. New York : . pp. 232--233.

Engholm, M. & Norin, L. (2008). Reduction of photodarkening in Yb/Al-doped fiber lasers. In Proceedings of SPIE - The International Society for Optical Engineering. (PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS). pp. U269--U276.  

Engholm, M. & Norin, L. (2007). Divalent Ytterbium in Ytterbium Doped Aluminosilicate Glass - Aspects on Photodarkening in Fiber Lasers. In 2007 CONFERENCE ON LASERS & ELECTRO-OPTICS/QUANTUM ELECTRONICS AND LASER SCIENCE CONFERENCE (CLEO/QELS 2007), VOLS 1-5. New York : . pp. 1902--1903.

Lashgari, K. , Kritikos, M. , Engholm, M. , Norin, L. , Edvardsson, S. & Westin, G. (2006). Sol-gel preparation of Er-doped planar and fibre wave-guides using heterometallic. In SPIE conference, San Diego (2006)..

Doctoral theses

Engholm, M. (2008). Materials optimization for optical fiber amplifiers and fiber lasers. Dis. (Comprehensive summary) Sundvall : Mid Sweden University, 2008 (Mid Sweden University doctoral thesis : 50)

Manuscripts

Engholm, M. , Vanin, E. & Norin, L. Characterization of Erbiuim Crystallites Embedded in Silica Glass.