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- Title
Photonic Majorana quantum cascade laser with polarization-winding emission.
- Authors
Han, Song; Chua, Yunda; Zeng, Yongquan; Zhu, Bofeng; Wang, Chongwu; Qiang, Bo; Jin, Yuhao; Wang, Qian; Li, Lianhe; Davies, Alexander Giles; Linfield, Edmund Harold; Chong, Yidong; Zhang, Baile; Wang, Qi Jie
- Abstract
Topological cavities, whose modes are protected against perturbations, are promising candidates for novel semiconductor laser devices. To date, there have been several demonstrations of topological lasers (TLs) exhibiting robust lasing modes. The possibility of achieving nontrivial beam profiles in TLs has recently been explored in the form of vortex wavefront emissions enabled by a structured optical pump or strong magnetic field, which are inconvenient for device applications. Electrically pumped TLs, by contrast, have attracted attention for their compact footprint and easy on-chip integration with photonic circuits. Here, we experimentally demonstrate an electrically pumped TL based on photonic analogue of a Majorana zero mode (MZM), implemented monolithically on a quantum cascade chip. We show that the MZM emits a cylindrical vector (CV) beam, with a topologically nontrivial polarization profile from a terahertz (THz) semiconductor laser. THz integrate light sources represent an important building blocks for various applications. Here the authors report an electrically driven topological laser based on photonic Majorana zero mode that can convert electricity directly into THz single-mode laser with topologically nontrivial beams.
- Subjects
LIGHT sources; SEMICONDUCTOR lasers; WAVEFRONT sensors; SEMICONDUCTOR devices; OPTICAL pumping; WAVEFRONTS (Optics); MAGNETIC fields; QUANTUM cascade lasers
- Publication
Nature Communications, 2023, Vol 14, Issue 1, p1
- ISSN
2041-1723
- Publication type
Article
- DOI
10.1038/s41467-023-36418-y