198 citations · 1.5k across the 23 of their papers we have counts for
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Quantum cascade laser roadmap
Carlo Silvestri, Aleksandar D. Rakić, Dragan Indjin +46
Quantum cascade lasers (QCLs) are unipolar semiconductor lasers first demonstrated in 1994. Since then, they have played a central role in advancing mid-infrared and terahertz phot…
Machine Learning for Optical Scanning Probe Nanoscopy
Xinzhong Chen, Suheng Xu, Sara Shabani +7
The ability to perform nanometer-scale optical imaging and spectroscopy is key to deciphering the low-energy effects in quantum materials, as well as vibrational fingerprints in pl…
Deep-Learning-Aided Extraction of Optical Constants in Scanning Near-Field Optical Microscopy
Yueqi Zhao, Xinzhong Chen, Ziheng Yao +2
Scanning near-field optical microscopy is one of the most effective techniques for spectroscopy of nanoscale systems. However, inferring optical constants from the measured near-fi…
Doping-driven topological polaritons in graphene/α-MoO3 heterostructures
Hai Hu, Na Chen, Hanchao Teng +15
Controlling the charge carrier density provides an efficient way to trigger phase transitions and modulate the optoelectronic properties in natural materials. This approach could b…
Hybrid Machine Learning for Scanning Near-field Optical Spectroscopy
Xinzhong Chen, Ziheng Yao, Suheng Xu +11
The underlying physics behind an experimental observation often lacks a simple analytical description. This is especially the case for scanning probe microscopy techniques, where t…
THz Near-Field Imaging of Extreme Subwavelength Metal Structures
Xinzhong Chen, Xiao Liu, Xiangdong Guo +15
Modern scattering-type scanning near-field optical microscopy (s-SNOM) has become an indispensable tool in material research. However, as the s-SNOM technique marches into the far-…
Nonlinear terahertz metamaterials via field-enhanced carrier dynamics in GaAs
Kebin Fan, Harold Y. Hwang, Mengkun Liu +7
We demonstrate nonlinear metamaterial split ring resonators (SRRs) on GaAs at terahertz frequencies. For SRRs on doped GaAs films, incident terahertz radiation with peak fields of…