High-performance femtosecond-laser microfabricated lattice-like-cladding waveguides in Er3+ and MgO co-doped LiNbO3 crystals for multi-wavelength guidance and luminescence

Jinman Lv; Ge Li; Yumeng Duan; Xinzhi Zheng; Yujie Ma; Feng Chen

Results in Physics (Jun 2024)

High-performance femtosecond-laser microfabricated lattice-like-cladding waveguides in Er3+ and MgO co-doped LiNbO3 crystals for multi-wavelength guidance and luminescence

Jinman Lv,
Ge Li,
Yumeng Duan,
Xinzhi Zheng,
Yujie Ma,
Feng Chen

Affiliations

Jinman Lv: Shenzhen Key Laboratory of Ultraintense Laser and Advanced Material Technology, Center for Intense Laser Application Technology, and College of EngineeringPhysics, Shenzhen Technology University, Shenzhen 518118, China; Corresponding authors at: Shenzhen Key Laboratory of Ultraintense Laser and Advanced Material Technology, Center for Intense Laser Application Technology, and College of EngineeringPhysics, Shenzhen Technology University, Shenzhen 518118, China.
Ge Li: Shenzhen Key Laboratory of Ultraintense Laser and Advanced Material Technology, Center for Intense Laser Application Technology, and College of EngineeringPhysics, Shenzhen Technology University, Shenzhen 518118, China
Yumeng Duan: Shenzhen Key Laboratory of Ultraintense Laser and Advanced Material Technology, Center for Intense Laser Application Technology, and College of EngineeringPhysics, Shenzhen Technology University, Shenzhen 518118, China
Xinzhi Zheng: Shenzhen Key Laboratory of Ultraintense Laser and Advanced Material Technology, Center for Intense Laser Application Technology, and College of EngineeringPhysics, Shenzhen Technology University, Shenzhen 518118, China
Yujie Ma: Shenzhen Key Laboratory of Ultraintense Laser and Advanced Material Technology, Center for Intense Laser Application Technology, and College of EngineeringPhysics, Shenzhen Technology University, Shenzhen 518118, China; Corresponding authors at: Shenzhen Key Laboratory of Ultraintense Laser and Advanced Material Technology, Center for Intense Laser Application Technology, and College of EngineeringPhysics, Shenzhen Technology University, Shenzhen 518118, China.
Feng Chen: School of Physics, State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, China

Journal volume & issue: Vol. 61
p. 107776

Abstract

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We report on microfabrication of the straight and S-shaped waveguides with lattice-like-cladding structures in Er3+ and MgO co-doped LiNbO3 by femtosecond laser writing. The waveguides with so-called Type II geometry support fundamental-mode propagation of light at near-infrared wavelength of 1550 nm and mid-infrared wavelength of 4 μm, which was experimentally and numerically investigated. In addition, it has been found that the guidance is only along the perpendicular (i.e., TE) polarization, which can be produced through controlling the femtosecond laser’s parameters and direction. The green up-conversion at 550 nm under 4S3/2 → 4I15/2 transitions as well as the near-infrared luminescence at 1530 nm under 4I13/2 → 4I15/2 transition have been realized in the waveguides, and the resulting up-conversion luminescence efficiency was higher than Type I waveguides, which proved the Type II WGs can preserve and inspire the properties of the materials.

Published in Results in Physics

ISSN: 2211-3797 (Online)
Publisher: Elsevier
Country of publisher: Netherlands
LCC subjects: Science: Physics
Website: http://www.journals.elsevier.com/results-in-physics/

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