Quanxin Guo
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View article: Crystal Structure-dependent Ammonium-ion Storage Mechanisms in Nanostructured MnO2 Polymorphs
Crystal Structure-dependent Ammonium-ion Storage Mechanisms in Nanostructured MnO2 Polymorphs Open
View article: Large Dynamic Range Spectral Measurement in Terahertz Region Based on Frequency Up-Conversion Detection via OH1 Crystal
Large Dynamic Range Spectral Measurement in Terahertz Region Based on Frequency Up-Conversion Detection via OH1 Crystal Open
Terahertz spectroscopy systems, which integrate terahertz sources and detectors, have important applications in many fields such as materials science and security checking. Based on highly sensitive frequency up-conversion detection, large…
View article: Hierarchical Nb@Nbn Core-Shell-Like Nanocolumns for Asymmetric Supercapacitors
Hierarchical Nb@Nbn Core-Shell-Like Nanocolumns for Asymmetric Supercapacitors Open
View article: Highly sensitive multi-stage terahertz parametric upconversion detection based on RbTiOPO<sub>4</sub> crystal
Highly sensitive multi-stage terahertz parametric upconversion detection based on RbTiOPO<sub>4</sub> crystal Open
Highly sensitive terahertz frequency upconversion detection was demonstrated with a RbTiOPO 4 crystal. The detectable THz frequency ranges were 3.6-4.0, and 5.4-5.7 THz. The minimum detectable terahertz energy at 5.6 THz was about 0.2 fJ.
View article: Molybdenum Nitride Thin Films Coated Cobalt-Metal-Organic Framework Nanocolumns for High-Efficiency Alkaline Hydrogen Evolution
Molybdenum Nitride Thin Films Coated Cobalt-Metal-Organic Framework Nanocolumns for High-Efficiency Alkaline Hydrogen Evolution Open
View article: Highly sensitive frequency upconversion detection from 1 to 3 THz with OH1 crystal
Highly sensitive frequency upconversion detection from 1 to 3 THz with OH1 crystal Open
The wide applications of terahertz (THz) wave technology in the ∼1–3 THz range has resulted in a surge in the demand for the performance improvement of THz wave detection technique. In this study, a frequency tunable, highly sensitive freq…
View article: 1.8 W, high efficiency, pump-enhanced, narrow linewidth optical parametric oscillator at 3.8 µm
1.8 W, high efficiency, pump-enhanced, narrow linewidth optical parametric oscillator at 3.8 µm Open
A high efficiency, continuous-wave, narrow linewidth, pump-enhanced optical parametric oscillator (OPO) at 3.8 µm was demonstrated, which was pumped by a 1064 nm fiber laser with a linewidth of 18 kHz. The low frequency modulation locking …
View article: Modeling for extracavity-pumped terahertz parametric oscillators
Modeling for extracavity-pumped terahertz parametric oscillators Open
This paper presents a modeling method for extracavity-pumped terahertz parametric oscillators (TPO) based on stimulated polariton scattering, in which the pumping beam is from a different laser, and the Stokes beam oscillates in its cavity…
View article: Tunable Stokes Laser Based on KTiOPO4 Crystal
Tunable Stokes Laser Based on KTiOPO4 Crystal Open
The characteristics of a tunable Stokes laser based on the cascaded stimulated polariton scattering and stimulated Raman scattering in KTiOPO4 crystal were studied experimentally and theoretically. When the pumping wavelength was 1064 nm, …
View article: Improved Laser Damage Threshold of In2Se3 Saturable Absorber by PVD for High-Power Mode-Locked Er-Doped Fiber Laser
Improved Laser Damage Threshold of In2Se3 Saturable Absorber by PVD for High-Power Mode-Locked Er-Doped Fiber Laser Open
In this study, a double-end pumped high-power passively mode-locked erbium-doped fiber laser (EDFL) was realized by employing a few-layered In2Se3 flakes as a saturable absorber (SA). Herein, the uniform large-scale In2Se3 flakes were synt…
View article: Output energy enhancement in a mode-locked Er-doped fiber laser using CVD-Bi<sub>2</sub>Se<sub>3</sub> as a saturable absorber
Output energy enhancement in a mode-locked Er-doped fiber laser using CVD-Bi<sub>2</sub>Se<sub>3</sub> as a saturable absorber Open
In this study, the output energy in topological insulators (TIs)-based Erbium-doped fiber laser (EDFL) was improved using two strategies: bidirectional pumped laser cavity and saturable absorber (SA) with high damage threshold and large mo…
View article: Versatile Mode-Locked Operations in an Er-Doped Fiber Laser with a Film-Type Indium Tin Oxide Saturable Absorber
Versatile Mode-Locked Operations in an Er-Doped Fiber Laser with a Film-Type Indium Tin Oxide Saturable Absorber Open
We demonstrate the generation of versatile mode-locked operations in an Er-doped fiber laser with an indium tin oxide (ITO) saturable absorber (SA). As an epsilon-near-zero material, ITO has been only used to fashion a mode-locked fiber la…