TY - JOUR
T1 - Optical properties of GaN/Er:GaN/GaN core-cladding planar waveguides
AU - Yan, Yaqiong
AU - Sun, Zhenyu
AU - Zhao, Weiping
AU - Li, Jing
AU - Lin, Jingyu
AU - Jiang, Hongxing
N1 - Funding Information:
The work is supported by the Directed Energy - Joint Transition Office Multidisciplinary Research Initiative program (grant #N00014-17-1-2531). H. X. Jiang and J. Y. Lin would also like to acknowledge the support of Whitacre Endowed Chairs by the AT&T Foundation.
Publisher Copyright:
© 2019 The Japan Society of Applied Physics.
PY - 2019/7/1
Y1 - 2019/7/1
N2 - Erbium-doped GaN (Er:GaN) possesses superior optical, mechanical and thermal properties and is a very promising material as a gain medium for solid-state high-energy lasers. We report here the optical properties of GaN/Er:GaN/GaN core-cladding planar waveguides (PWGs). Optical confinement in the core layer has been investigated. The measured optical loss coefficients of Er:GaN PWGs at 1.54 μm are 1.0 cm-1 for the TE polarization mode and 1.2 cm-1 for the TM polarization mode. Approaches to further reduce optical loss and the optimal configuration for resonantly pumped GaN/Er:GaN/GaN PWGs for achieving amplification near 1.5 μm have been identified.
AB - Erbium-doped GaN (Er:GaN) possesses superior optical, mechanical and thermal properties and is a very promising material as a gain medium for solid-state high-energy lasers. We report here the optical properties of GaN/Er:GaN/GaN core-cladding planar waveguides (PWGs). Optical confinement in the core layer has been investigated. The measured optical loss coefficients of Er:GaN PWGs at 1.54 μm are 1.0 cm-1 for the TE polarization mode and 1.2 cm-1 for the TM polarization mode. Approaches to further reduce optical loss and the optimal configuration for resonantly pumped GaN/Er:GaN/GaN PWGs for achieving amplification near 1.5 μm have been identified.
UR - http://www.scopus.com/inward/record.url?scp=85073657859&partnerID=8YFLogxK
U2 - 10.7567/1882-0786/ab2730
DO - 10.7567/1882-0786/ab2730
M3 - Article
AN - SCOPUS:85073657859
VL - 12
JO - Applied Physics Express
JF - Applied Physics Express
SN - 1882-0778
IS - 7
M1 - 075505
ER -