On-chip wide tuning of high-power quantum cascade laser based on a vertical-integrated heater
Mid-infrared high-peak power quantum cascade lasers are highly useful in many applications such as gas sensing and free-space communication. However, practical application scenarios place further demands on the wavelength tunability and integration of the devices. Here, we proposed an on-chip wide tuning scheme for high-peak power quantum cascade lasers based on a vertically integrated heater. The device exhibits a high peak output power of 12.6 W at λ ∼ 8.9 μm with a stable single-mode operation and a high side-mode-suppression ratio of 30 dB. The wavelength tuning range is extended to 16.1 cm−1 using the designed on-chip heater, over one-order of magnitude wider than that of pure electrical tuning to the device. A wider continuous tuning range of 45.2 cm−1 was further realized by incorporating a multi-wavelength distributed-feedback design. The demonstrated tuning scheme is simple in fabrication without any epitaxy regrowth and provides a favorable approach to the on-chip widely tunable quantum cascade lasers and their applications in fields such as multi-gas sensing and environmental monitoring.
Authors
- Rusong Li (ORCID: https://orcid.org/0000-0001-7317-937X)
- Shenqiang Zhai (ORCID: https://orcid.org/0000-0003-3186-4461)
- Haiyun Dong (ORCID: https://orcid.org/0000-0003-2650-8016)
- Binru Zhou (ORCID: https://orcid.org/0000-0002-2784-9851)
- Jinchuan Zhang (ORCID: https://orcid.org/0000-0002-8813-2096)
- Quanyong Lu (ORCID: https://orcid.org/0000-0002-2783-7201)
- Fengqi Liu (ORCID: https://orcid.org/0000-0002-3456-7449)
- Shichen Zhang (ORCID: https://orcid.org/0000-0003-3688-3717)
- Zhenhua Ma (ORCID: https://orcid.org/0000-0003-3112-3153)
- Yu Ma (ORCID: https://orcid.org/0009-0006-2141-6146)
- Yixuan Zhu (ORCID: https://orcid.org/0009-0004-1400-3306)
- Ning Zhuo (ORCID: https://orcid.org/0000-0001-6678-4125)
Institutions
- Chinese Academy of Sciences (CN)
- Physical Sciences (United States) (US)
- FZU ‒ Institute of Physics of the Academy of Sciences of the Czech Republic (CZ)
- Institute of Semiconductors (CN)
- Beijing Academy of Quantum Information Sciences (CN)
- University of Chinese Academy of Sciences (CN)
Publication Details
- Journal
- APL Photonics
- Published
- 2025-09-01
- DOI
- https://doi.org/10.1063/5.0284535
- Primary Topic
- Spectroscopy and Laser Applications
- Type
- article
- Field-Weighted Citation Impact
- 0.00
Funders
- National Natural Science Foundation of China
- Chinese Academy of Sciences
- Youth Innovation Promotion Association of the Chinese Academy of Sciences
- Youth Innovation Promotion Association