Author(s): Guo, QQ (Guo, Qiangqiang); Zhang, JC (Zhang, Jinchuan); Yin, R (Yin, Ran); Zhuo, N (Zhuo, Ning); Lu, QY (Lu, Quanyong); Zhai, SQ (Zhai, Shenqiang); Liu, JQ (Liu, Junqi); Wang, LJ (Wang, Lijun); Liu, SM (Liu, Shuman); Liu, FQ (Liu, Fengqi)

Source: OPTICS EXPRESS Volume: 30 Issue: 13 Pages: 22671-22678 DOI: 10.1364/OE.458589 Published: JUN 20 2022

Abstract: Micro-resonator-based lasers are well suited for high-density optoelectronic integration because of their small volumes and low thresholds. However, microcavity quantum cascade lasers for on-chip sensing have high thermal loads that make continuous-wave operation challenging. In this work, we designed an selective thermal dissipation scheme for the selective electrical isolation process to improve the thermal conductivity of the devices. The lasers operated at 50 degrees C, with 4.7-mu m emission. They were fabricated as a notched elliptical resonator, resulting in a highly unidirectional far-field profile with an in-plane beam divergence of 1.9 degrees. Overall, these directional-emission quantum cascade lasers pave the way for portable and highly integrated sensing applications. (c) 2022 Optica Publishing Group under the terms of the Optica Open Access Publishing Agreement

Accession Number: WOS:000813479600029

Author Identifiers:

Author        Web of Science ResearcherID        ORCID Number

liu, jun qi                  0000-0003-1654-6174

ISSN: 1094-4087

Full Text: https://opg.optica.org/oe/fulltext.cfm?uri=oe-30-13-22671&id=476761