Publications

Articles in journals Conference papers Doctoral theses, comprehensive summaries Manuscripts

Articles in journals

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, 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, pp. 195105-1.

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.

Conference papers

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). Reduction of photodarkening in Yb/Al-doped fiber lasers. In Fiber Lasers V: Technology, Systems, and Applications. (PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS). pp. U269--U276.

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. (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, comprehensive summaries

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