chirped pulse
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2022 ◽  
Vol 148 ◽  
pp. 107791
Fenxiang Wu ◽  
Xingyan Liu ◽  
Xinliang Wang ◽  
Jiabing Hu ◽  
Xiaoming Lu ◽  

2022 ◽  
Vol 20 (3) ◽  
pp. 031405
Zexing Zhao ◽  
Hao Chen ◽  
Ziming Zhang ◽  
Jiatong Li ◽  
Fangxiang Zhu ◽  

Thomas McFadden ◽  
Nicole Moon ◽  
Frank Marshall ◽  
Amanda Duerden ◽  
Esther J Ocola ◽  

The molecules 1,1-difluorosilacyclopent-3-ene (3SiCPF2) and silacyclopent-3-ene (3SiCP) have been synthesized and studied using chirped pulse, Fourier transform microwave (CP-FTMW) spectroscopy. For 3SiCP this is the first ever microwave study of...

Molecules ◽  
2021 ◽  
Vol 27 (1) ◽  
pp. 17
Alberto Macario ◽  
Susana Blanco ◽  
Ibon Alkorta ◽  
Juan Carlos López

The rotational spectrum of the pentafluoropyridine-Ne complex, generated in a supersonic jet, has been investigated using chirped-pulse microwave Fourier transform spectroscopy in the 2–8 GHz range. The spectra of the 20Ne and 22Ne species have been observed, and the rotational constants have been used to determine the structure of the complex. This structure, and those of the previously experimentally studied complexes benzene-Ne and pyridine-Ne, are an excellent benchmark for the theoretical calculations on these adducts. These complexes and hexafluorobenzene-Ne have been investigated at the CCSD/6-311++G(2d,p) level. The calculations reproduce the experimental structures well and show how the van der Waals complexes are stronger for the perfluorinated compound.

Ranil M Gurusinghe ◽  
Nureshan Dias ◽  
Ritter Krueger ◽  
Arthur G. Suits

2021 ◽  
Ji Wang ◽  
Yanqing Zheng ◽  
Yunlin Chen

Abstract Optical parametric chirped pulse amplification (OPCPA) shows great potential in producing ultrashort high-intensity pulses because of its large gain bandwidth. Quasi-parametric chirped pulse amplification (QPCPA) may further extend the bandwidth, but the behavior of QPCPA at a limited pump intensity (e.g., ≤5 GW/cm2 in a nanosecond pumped QPCPA) is not fully investigated yet. We have discussed in detail the ultra-broadband amplification and the noncollinear phase-matching geometry in QPCPA. We have modeled and developed a novel noncollinear geometry in QPCPA namely ’triple-wavelength phase-matching geometry’ which provides two additional phase-matching points around the phase-matching point at the center wavelength. Our analysis demonstrates that the triple-wavelength phase-matching geometry can support stable, ultra-broadband amplification in QPCPA. The numerical simulation results show that ultrashort pulse with a pulse duration of 7.92 fs can be achieved in QPCPA when the pump intensity is limited to 5 GW/cm2, calculated using the nonlinear coefficient of YCOB.

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