Yu, Aran Kim, Moohyuk Song, Da In Park, Byoung Jun Jeong, Hae Rin You, Byeong Uk Jeon, Seung-Woo Han, Sang-Wook Kim, Myung-Ki 2024-05-02T05:00:12Z 2024-05-02T05:00:12Z 2024-05-02 2024-07 2192-8606 https://pubs.kist.re.kr/handle/201004/149782 Despite their excellent performance and versatility, the efficient integration of small lasers with other optical devices has long been hindered by their broad emission divergence. In this study, we introduce a novel approach for emission engineering in microdisk lasers, significantly enhancing their vertical emission output by directly integrating specially designed reflective metalenses, referred to as "meta-micromirrors". A 5 mu m-diameter microdisk laser is precisely positioned at an 8 mu m focal distance on a 30 x 30 mu m(2) meta-micromirror featuring a numerical aperture (NA) of 0.95, accomplished through micro-transfer printing techniques. Our experiments demonstrated a notable increase in the emission efficiency within an NA of 0.65. Specifically, we observed a 2.68-fold increase in the average emission from ten microdisk lasers. This integration not only enhances the emission efficiency of small lasers but also holds considerable implications for micro- and nano-photonic integrations. The results of this integration open up new possibilities in various fields, including photonic integrated circuits, bio-sensing technologies, and the development of quantum light sources. English WALTER DE GRUYTER GMBH Emission engineering in microdisk lasers via direct integration of meta-micromirrors Article 10.1515/nanoph-2023-0898 1 Nanophotonics, v.13, no.16, pp.2903 - 2913 Nanophotonics 13 16 2903 2913 Y scie scopus 001203243400001 2-s2.0-85190729704 Nanoscience & Nanotechnology Materials Science, Multidisciplinary Optics Physics, Applied Science & Technology - Other Topics Materials Science Optics Physics Article PHOTONIC CRYSTAL NANOLASER SINGLE METASURFACES small lasers microdisk lasers metasurfaces meta-micromirrors