pengqian_1997#

Wang Peng-qian, Xie Xiao-bo and Sun Tao-heng, Chin. Phys. Lett. 14, 740 (1997)

Source record · Catalogue · Review register

Source kind: measurement

Recorded technique: Resonance-enhanced third-harmonic generation in a pulsed methane jet (850 Torr backing, about 5 % of it assumed at the focus) of a frequency-doubled, tunable dye laser (1-3 mJ, 10 ns, 0.5 cm^-1): third-harmonic spectra from 105.3 to beyond 111.3 nm (VUV) and 92.75 to 96.67 nm (XUV), normalized to the cube of the input energy.

Materials in structured entries: None recorded.

Dataset quantities: None recorded.

Contents: 0 datasets; 0 formulas.

Curation notes#

No third-order value is extracted: the paper prints no susceptibility or hyperpolarizability, only relative third-harmonic spectra (Figs. 1, 2) and the cubic power dependence (Fig. 3). Eq. (1), p. 740: I(3w) proportional to N^2 |chi(3)(3w)|^2 I(w)^3 F(b Delta k) (after Lago, Hilber and Wallenstein 1987), with no absolute calibration. The spectra show a vibrational progression of methane’s excited states near 89900-95000 cm^-1 (spacing 820 +- 20 cm^-1, p. 742), i.e. resonantly enhanced chi(3) at three-photon resonances in the VUV: not relevant to the nonresonant Kerr and THG coefficients. The conversion efficiency of methane is ‘at least one order less than that in CO’ in the same regions (p. 743), a qualitative statement only. The library’s author names are inverted (the paper prints WANG Peng-qian, XIE Xiao-bo, SUN Tao-heng: family names Wang, Xie, Sun); the source id keeps the library’s order.

Recorded bibliographic identity status: VALIDATED_WITH_WARNINGS. This concerns identification of the source; it does not establish the scientific correctness of its contents.

Datasets#

No datasets are recorded.

Formulas#

No formulas are recorded.

Corrections#

No dataset errata are recorded in this source record.

Formula corrections, where recorded, appear with their formulas above. Curation notes may also discuss corrections or unresolved interpretation. Consult the review register for the checks and decisions.