Improvement of Thermal Resistance of Surface-emitting Quantum Cascade Laser using Structural Function and 3D Thermal Flow Simulation

Shigeyuki Takagi, Hirotaka Tanimura, Tsutomu Kakuno, Rei Hashimoto, Kei Kaneko, Shinji Saito

2022

Abstract

We have evaluated the thermal resistance of the surface-emitting QCL, which is expected to increase the output and improve the beam quality, based on the structure function and 3D heat flow resolution. From the structure function, the thermal resistance of the surface emitting QCL was divided into the mesa for laser excitation, the InP substrate, and the CuW mount, and the total thermal resistance of 8.0 K/W was obtained. The thermal resistance obtained by the 3D thermal analysis simulation was estimated to be 8.3 K/W, which was in good agreement with that obtained from the structure function. Furthermore, the effect of the diamond submount was evaluated and it was shown that the thermal resistance was reduced to 5.2 K/W. It is considered that the thermal resistance is reduced by the horizontal transfer of heat in the diamond submount.

Paper Citation

in Harvard Style

Takagi S., Tanimura H., Kakuno T., Hashimoto R., Kaneko K. and Saito S. (2022). Improvement of Thermal Resistance of Surface-emitting Quantum Cascade Laser using Structural Function and 3D Thermal Flow Simulation. In Proceedings of the 10th International Conference on Photonics, Optics and Laser Technology - Volume 1: PHOTOPTICS, ISBN 978-989-758-554-8, pages 128-133. DOI: 10.5220/0010896700003121

in Bibtex Style

@conference{photoptics22,
author={Shigeyuki Takagi and Hirotaka Tanimura and Tsutomu Kakuno and Rei Hashimoto and Kei Kaneko and Shinji Saito},
title={Improvement of Thermal Resistance of Surface-emitting Quantum Cascade Laser using Structural Function and 3D Thermal Flow Simulation},
booktitle={Proceedings of the 10th International Conference on Photonics, Optics and Laser Technology - Volume 1: PHOTOPTICS,},
year={2022},
pages={128-133},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0010896700003121},
isbn={978-989-758-554-8},
}

in EndNote Style

TY - CONF

JO - Proceedings of the 10th International Conference on Photonics, Optics and Laser Technology - Volume 1: PHOTOPTICS,
TI - Improvement of Thermal Resistance of Surface-emitting Quantum Cascade Laser using Structural Function and 3D Thermal Flow Simulation
SN - 978-989-758-554-8
AU - Takagi S.
AU - Tanimura H.
AU - Kakuno T.
AU - Hashimoto R.
AU - Kaneko K.
AU - Saito S.
PY - 2022
SP - 128
EP - 133
DO - 10.5220/0010896700003121