The hyperpolarizability dispersion of neon is not anomalous
نویسندگان
چکیده
Experimental measurements are presented which show that the anomalous hyperpolarizability dispersion previously observed for neon is spurious. The electric-field-induced second harmonic generation measurements of the hyperpolarizability of neon are now in agreement with the best ab initio results, both in the static limit and at optical frequencies. This experiment gives )+.,== 122.2kO.4 and 123.5f0.5 au at I= 5 14.5 and 488.0 nm, respectively. The experimental estimate of the static hyperpolarizability of neon is 108 k 2 au.
منابع مشابه
Predicting the Frequency Dispersion of Electronic Hyperpolarizabilities on the Basis of Absorption Data and Thomas-Kuhn Sum Rules
Successfully predicting the frequency dispersion of electronic hyperpolarizabilities is an unresolved challenge in materials science and electronic structure theory. We show that the generalized Thomas-Kuhn sum rules, combined with linear absorption data and measured hyperpolarizability at one or two frequencies, may be used to predict the entire frequency-dependent electronic hyperpolarizabili...
متن کاملHyperpolarizability dispersion measured for (CH3)2O.
The third-order nonlinear-optical susceptibility of dimethyl ether, (CH3)2O, has been measured in the gas phase over the wavelength range 488 nm < λ < 1064 nm using the technique of gas-phase electric-field-induced second-harmonic generation with periodic phase matching and with N2 as the reference gas. Measurements span a range of temperature, which allows for separation of the temperature-ind...
متن کاملTWO PHOTON TRANSITIONS IN THE OPTOGALVANIC SPECTRUM OF NEON
Seventeen two-photon transitions for neon have been observed in the 580- 635 nm spectral region for use in the spectroscopic study of its higher excited levels, which are not accessible by one-photon absorption. To compare the two and one-photon absorption signals originating from the same lower level, an effort was made to record single-photon optogalvanic spectrum in the available wavele...
متن کاملEXPERIMENTAL INVESTIGATION OF THE POPULATION DENSITIES OF LOWEREXCITED STATES OF NEON
Many studies employing various methods have been carried out into the number densities of excited atoms in electrical discharges with inert gases [1,2,3], but the ranges of the discharge current and gas pressure is very limited in them all. In this work, the population densities of 3S, 3s' of neon have been investigated using the atomic absorption method. Since the discharge current and gas...
متن کاملAnomalous Coronal Neon Abundances in Quiescent Solar Active Regions
The systematic di†erences between the solar photospheric and coronal composition are generally thought to be related to the Ðrst ionization potential (FIP) of the trace elements. While there are ample data showing that this is a signiÐcant factor, there is a growing body of observational evidence that a simple, FIP-based formula is not the whole story for coronal abundances. One of the most tro...
متن کامل