Dr. Wendwesen H. Gebremichael Profile

Dr. Wendwesen H. Gebremichael

Optical Scientist at Aktiwave LLC

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Author

Publications (5)

Proceedings Article | 17 March 2023 Presentation

Mid-IR waveguides and beamsplitters inside IG2 by ultrafast laser inscription for astrophotonics

Wendwesen Gebremichael, Derek Oliwa, Wei Hu, Christophe Dorrer, Jie Qiao

Proceedings Volume PC12408, PC1240807 (2023) https://doi.org/10.1117/12.2650696

KEYWORDS: Mid-IR, Waveguides, Ultrafast lasers, Beam splitters, Astrophotonics, Glasses, Wave propagation, Water, Transparency, Stars

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Proceedings Article | 1 April 2022 Presentation

Comparative study of Nd:YAG waveguide lasers inscribed with visible and near-IR femtosecond laser sources

Wendwesen Gebremichael, Christophe Dorrer, Jie Qiao

Proceedings Volume PC11988, PC1198809 (2022) https://doi.org/10.1117/12.2609000

KEYWORDS: Femtosecond phenomena, Waveguide lasers, Nd:YAG lasers, Waveguides, Wave propagation, Laser damage threshold, Physical phenomena, Output couplers, Laser-matter interactions, Dielectrics

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Proceedings Article | 14 March 2018 Presentation

Direct laser writing of double track waveguides inside calcium fluoride crystals (Conference Presentation)

Wendwesen Gebremichael, Inka Manek-Hönninger, Yannick Petit, Sophie Rouzet, Clemens Hönninger, Lionel Canioni

Proceedings Volume 10519, 105190V (2018) https://doi.org/10.1117/12.2289876

KEYWORDS: Waveguides, Crystals, Laser crystals, Calcium, Refractive index, Multiphoton lithography, Polarization, Fluorite, Nonlinear crystals, Glasses

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SPIE Journal Paper | 12 September 2017

Polarization-dependent angular distribution of the absorption behavior in ytterbium-doped monoclinic LYB and LGB laser crystals

Wendwesen Gebremichael, Yannick Petit, Sophie Rouzet, Alexandre Fargues, Véronique Jubera, Alain Garcia, Philippe Veber, Matias Velazquez, Lionel Canioni, Inka Manek-Hönninger

OE, Vol. 57, Issue 02, 021203, (September 2017) https://doi.org/10.1117/12.10.1117/1.OE.57.2.021203

KEYWORDS: Absorption, Crystals, Dielectrics, Laser crystals, Crystallography, Refractive index, Dielectric polarization, Polarization, Optical engineering, Ytterbium

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Proceedings Article | 17 February 2017 Presentation + Paper

Polarization-dependent angular distribution of the absorption behavior in Ytterbium-doped monoclinic LYB and LGB compounds

W. Gebremichael, Y. Petit, S. Rouzet, A. Fargues, P. Veber, M. Velazquez, V. Jubera, L. Canioni, I. Manek-Hönninger

Proceedings Volume 10082, 1008212 (2017) https://doi.org/10.1117/12.2251903

KEYWORDS: Crystals, Absorption, Laser crystals, Crystallography, Laser spectroscopy, Spectroscopy, Ytterbium, Polarization, Dielectrics, Refractive index, Dielectric polarization, Matrices, Anisotropy

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