We report on direct measurements of the emission character of quantum cascade laser based frequency combs, using intensity autocorrelation. Our implementation is based on fast electro-optic sampling, with a detection spectral bandwidth matching the emission bandwidth of the comb laser, around 2.5 THz....
1. When the edge sharpness parameter increases, the curve of intensity autocorrelation becomes narrow, and the autocorrelation spectra. 当锐度参量增加时,强度自相关曲线宽度变窄,自相关频谱曲线随之展宽。2) autoccorelation function of intensity fluctuations 强度涨落自相关函数...
Hard x-ray intensity autocorrelation using direct two-photon absorption. Phys. Rev. Res. 4, L012035 (2022). Article Google Scholar Vinko, S. M. et al. Creation and diagnosis of a solid-density plasma with an X-ray free-electron laser. Nature 482, 59–62 (2012). Article ADS Google ...
We construct several examples of distinct asymmetric-symmetric pulse pairs with identical or essentially identical intensity autocorrelations and power spectra. From these examples, we infer that pulse retrieval methods based on these two data sets alone produce ambiguous solutions. Furthermore, we used ...
The method reconstructs the object image through spatial intensity autocorrelation measurements and combines it with a phase recovery algorithm to overcome the errors induced by phase fluctuations. In addition, the sub-aperture array design introduced in the study realizes diffraction-limited imaging with...
通过比较光孤子在传输前后的自相关曲线和光谱图,实现了光孤子在光纤中34km无畸变传输。 5) intensity autocorrelation 强度自相关 1. When the edge sharpness parameter increases, the curve ofintensity autocorrelationbecomes narrow, and the autocorrelation spectra. ...
intensity-autocorrelation function光强自相关函数 3)correlation functions关联函数 1.The partition function andcorrelation functionsof the Ising model on a diamond fractal lattices;钻石分形晶格上Ising模型的配分函数与关联函数 2.The relative populations of states of 4~He and 8~Be were extracted from p-t...
By illuminating a photosensitive detector with the scattered light and measuring the spectrum or autocorrelation function of the resulting photocurrent, one can, in general, obtain the ensemble-average time dependence of specific collective excitations within the scattering medium. We present here a ...
ρ and λ represent the spatial autocorrelation coefficients. µ represents the residual sequence matrix, and W µ represents the interaction effect of the residual terms. Formula (6) represents different models depending on the value of the parameter λ. Specifically, if λ = 0, then ...
According to the existing research, there are two tests to assess the validity of the SYS-GMM instrumental variables and estimation results: one is the autocorrelation test, which uses the second-order sequential correlation test AR (2) to test whether the disturbance terms have a serial ...