Optical losses in p-type layers of GaN ridge waveguides in the IR region

Ohad Westreich; Moti Katz; Gil Atar; Yossi Paltiel; Noam Sicron

doi:10.1063/1.4992103

Optical losses in p-type layers of GaN ridge waveguides in the IR region

Ohad Westreich^*, Moti Katz, Gil Atar, Yossi Paltiel, Noam Sicron

^*Corresponding author for this work

Department of Applied Physics

Research output: Contribution to journal › Article › peer-review

4 Scopus citations

Abstract

Optical losses in c-plane (0001) GaN ridge waveguides, containing Mg-doped layers, were measured at 1064 nm, using the Fabry-Perot method. The losses increase linearly with the modal content of the p-layer, indicating that the absorption in these waveguides is dominated by p-layer absorption. The p-layer absorption is strongly anisotropic with E⊥c losses 4 times higher than E∝c. The absorption is temperature independent between 10 °C and 60 °C, supporting the possibility that it is related to Mg-bound holes.

Original language	English
Article number	022103
Journal	Applied Physics Letters
Volume	111
Issue number	2
DOIs	https://doi.org/10.1063/1.4992103
State	Published - 10 Jul 2017

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abstract = "Optical losses in c-plane (0001) GaN ridge waveguides, containing Mg-doped layers, were measured at 1064 nm, using the Fabry-Perot method. The losses increase linearly with the modal content of the p-layer, indicating that the absorption in these waveguides is dominated by p-layer absorption. The p-layer absorption is strongly anisotropic with E⊥c losses 4 times higher than E∝c. The absorption is temperature independent between 10 °C and 60 °C, supporting the possibility that it is related to Mg-bound holes.",

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AU - Westreich, Ohad

AU - Katz, Moti

AU - Atar, Gil

AU - Paltiel, Yossi

AU - Sicron, Noam

PY - 2017/7/10

Y1 - 2017/7/10

N2 - Optical losses in c-plane (0001) GaN ridge waveguides, containing Mg-doped layers, were measured at 1064 nm, using the Fabry-Perot method. The losses increase linearly with the modal content of the p-layer, indicating that the absorption in these waveguides is dominated by p-layer absorption. The p-layer absorption is strongly anisotropic with E⊥c losses 4 times higher than E∝c. The absorption is temperature independent between 10 °C and 60 °C, supporting the possibility that it is related to Mg-bound holes.

AB - Optical losses in c-plane (0001) GaN ridge waveguides, containing Mg-doped layers, were measured at 1064 nm, using the Fabry-Perot method. The losses increase linearly with the modal content of the p-layer, indicating that the absorption in these waveguides is dominated by p-layer absorption. The p-layer absorption is strongly anisotropic with E⊥c losses 4 times higher than E∝c. The absorption is temperature independent between 10 °C and 60 °C, supporting the possibility that it is related to Mg-bound holes.

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Optical losses in p-type layers of GaN ridge waveguides in the IR region

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