5 papers
Approaching intrinsic threshold breakdown voltage and ultra-high gain in graphite/InSe Schottky photodetector
Zhiyi Zhang, Bin Cheng, Jeremy Lim +10
Realizing both ultra-low breakdown voltage and ultra-high gain has been one of the major challenges in the development of high-performance avalanche photodetector. Here, we report…
Propagation-induced limits to high harmonic generation in 3D Dirac semimetals
Jeremy Lim, Yee Sin Ang, Lay Kee Ang +1
3D Dirac semimetals (DSMs) are promising materials for terahertz high harmonic generation (HHG). We show that 3D DSMs' high nonlinearity opens up a regime of nonlinear optics where…
Highly efficient terahertz generation using 3D Dirac semimetals
Lu Wang, Jeremy Lim, Liang Jie Wong
We show that 3D Dirac semimetals are promising candidates for highly efficient optical-to-terahertz conversion due to their extreme optical nonlinearities. In particular, we predic…
Efficient generation of extreme terahertz harmonics in 3D Dirac semimetals
J. Lim, Y. S. Ang, F. J. G. de Abajó +3
Frequency multiplication of terahertz signals on a solid state platform is highly sought-after for the next generation of high-speed electronics and the creation of frequency combs…
Terahertz-optical intensity grating for creating high-charge, attosecond electron bunches
J. Lim, Y. D. Chong, L. J. Wong
Ultrashort electron bunches are useful for applications like ultrafast imaging and coherent radiation production. Currently, however, the shortest achievable bunches, at attosecond…