Improvement in Thermal Resistance of Surface-Emitting Quantum Cascade Laser by Using a Diamond Submount

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

2023

Abstract

To reduce thermal resistance and improve heat dissipation in surface-emitting quantum cascade lasers (QCLs), we investigated their structure in which a diamond submount is inserted between a mesa and a CuW mount. From the results of the thermal flow simulation of three-dimensional models of the QCLs, the thermal resistance of the QCL without the diamond submount was 8.5 K/Wand that of the QCL with the diamond submount was 5.2 K/W. From the structure function obtained using the static method, the thermal resistance of the QCL without the diamond submount was 8.5 K/W and that of the QCL with the diamond submount was 6.3 K/W. From the measured output range of the QCLs, the measurement output power of the QCL without the diamond submount was 265 mW and that of the QCL with the diamond submount was 290 mW. The reduction in thermal resistance and the improvement in laser output were confirmed to be due to the diamond submount.

Paper Citation

in Harvard Style

Takagi S., Tanimura H., Kakuno T., Hashimoto R., Kaneko K. and Saito S. (2023). Improvement in Thermal Resistance of Surface-Emitting Quantum Cascade Laser by Using a Diamond Submount. In Proceedings of the 11th International Conference on Photonics, Optics and Laser Technology - Volume 1: PHOTOPTICS, ISBN 978-989-758-632-3, pages 82-87. DOI: 10.5220/0011777800003408

in Bibtex Style

@conference{photoptics23,
author={Shigeyuki Takagi and Hirotaka Tanimura and Tsutomu Kakuno and Rei Hashimoto and Kei Kaneko and Shinji Saito},
title={Improvement in Thermal Resistance of Surface-Emitting Quantum Cascade Laser by Using a Diamond Submount},
booktitle={Proceedings of the 11th International Conference on Photonics, Optics and Laser Technology - Volume 1: PHOTOPTICS,},
year={2023},
pages={82-87},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0011777800003408},
isbn={978-989-758-632-3},
}

in EndNote Style

TY - CONF

JO - Proceedings of the 11th International Conference on Photonics, Optics and Laser Technology - Volume 1: PHOTOPTICS,
TI - Improvement in Thermal Resistance of Surface-Emitting Quantum Cascade Laser by Using a Diamond Submount
SN - 978-989-758-632-3
AU - Takagi S.
AU - Tanimura H.
AU - Kakuno T.
AU - Hashimoto R.
AU - Kaneko K.
AU - Saito S.
PY - 2023
SP - 82
EP - 87
DO - 10.5220/0011777800003408