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Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：Calculation of high-order harmonic generation of atoms and molecules by combining time series prediction and neural networks
时间序列预测 神经网络计算 原子分子 高阶谐波生成
2023/5/9
High-order harmonic generation (HHG) from the interaction of ultra-intense laser pulses with atoms is an important tabletop short-wave coherent light source. Accurate quantum simulations of it present...
Cornell researchers have developed nanostructures that enable record-breaking conversion of laser pulses into high-harmonic generation, paving the way for new scientific tools for high-resolution imag...
In-Band OSNR Monitoring via Slow-Light Enhanced Third Harmonic Generation in Silicon Photonic Crystal Waveguides
In-Band OSNR Monitoring Slow-Light Enhanced Third Harmonic Generation Silicon Photonic Crystal Waveguides
2015/7/16
We demonstrate optical performance monitoring of in-band OSNR in 40Gbit/s Return-to-Zero signals via slow-light enhanced third-harmonic generation in silicon photonic crystal waveguides, improving on ...
Blue and Ultra-Violet Radiations Using Quasi-Phase-Matched Second Harmonic Generation Devices
SHG QPM Bulk Waveguide
2009/6/8
Quasi-phase matched (QPM) second-harmonic generation (SHG) device offers various application for blue and ultra-violet (UV) radiations. Advanced poling technology made it possible to realize micron an...
Characteristics of High-order Harmonic Generation in Carbon Dioxide Gas Jet
High-order harmonic generation Alignment, Molecule Laser intensity
2009/6/1
Angular characteristics of high-order harmonic generation from aligned CO2 molecules have been investigated. The modulation inversion of harmonic yield with respect to molecular alignment can be alter...
Angular Dependence of High-order Harmonic Generation from Nonadiabatically Aligned Molecules
High order harmonic generation Molecular alignment Femtosecond laser pulse
2009/6/1
We measured the dependence of high-order harmonic generation (HHG) on the angle α between polarization directions of high-intensity femtosecond laser pulses in the pump and probe experiment. The exper...
Second Harmonic Generation Using an All-Fiber Q-Switched Yb-Doped Fiber Laser and MgO:c-PPLN
All-Fiber Q-Switched MgO:c-PPLN
2008/10/31
We have experimentally demonstrated an efficient all-fiber passively Q-switched Yb-doped fiber laser with Samarium doped fiber as a saturable absorber. Average output power of 3.4 W at a repetit...
Noise Analysis of Second-Harmonic Generation in Undoped and MgO-Doped Periodically Poled Lithium Niobate
MgO-Doped Periodically Lithium Niobate
2008/10/31
Noise characteristics of second-harmonic generation (SHG) in periodically poled lithium niobate (PPLN) using the quasiphase matching (QPM) technique are analyzed experimentally. In the experiment, a0....
Slow Light Enhanced Third-Harmonic Generation in Silicon Photonic Crystal Waveguides
Third-Harmonic Silicon Photonic Crystal Waveguides
2015/8/6
We report visible (green) third-harmonic generation in silicon by launching near-infrared picosecond pulses into highly confined photonic crystal waveguides. We demonstrate slow light enhancement of t...
Intra-cavity second harmonic generation with Nd:YVO4/BIBO laser at 542 nm
Second harmonic generation Phase-matching Angular bandwidth Yellow–green light BIBO crystal
2011/12/12
We report, for the first time, an efficient intra-cavity second-harmonic generation (SHG) at 1084 nm in a nonlinear optical crystal,BiB3O6(BIBO) at the direction of (h,u) = (170.1,90), performed wit...
Enhanced second-harmonic generation in AlGaAs/AlxOy tightly confining waveguides and resonant cavities
second-harmonic generation AlGaAs/AlxOy tightly resonant cavities
2015/8/11
We demonstrate second-harmonic generation (SHG) from sub-micrometer-sized AlGaAs/AlxOy artificially birefringent waveguides. The normalized conversion efficiency is the highest ever report...
Intra-cavity second harmonic generation with Nd:YVO4/BIBO laser at 542 nm
Second harmonic generation Phase-matching Angular bandwidth Yellow–green light BIBO crystal
2011/12/19
We report, for the first time, an efficient intra-cavity second-harmonic generation (SHG) at 1084 nm in a nonlinear optical crystal, BiB3O6(BIBO) at the direction of (h,u) = (170.1,90), performed wi...