loriot_2010#

V. Loriot, E. Hertz, O. Faucher and B. Lavorel, Opt. Express 18, 3011 (2010) (erratum to Opt. Express 17, 13429, 2009)

Source record · Catalogue · Review register

Source kind: measurement

Recorded technique: Erratum (2 pages) to loriot_2009: no new measurement; the published coefficients are reinterpreted and rescaled.

Materials in structured entries: None recorded.

Dataset quantities: None recorded.

Contents: 0 datasets; 0 formulas.

Curation notes#

No datasets: the erratum’s corrected n2 values are applied to loriot_2009’s n2 datasets as [[errata]] (the paper’s own correction), so that the measurement is recorded once.

The correction (p. 1): ‘The signal observed in [1] results from cross-coupling between two laser beams, i.e. pump and probe, propagating along different directions. The coefficients of the nonlinear refractive index introduced in Eqs. (5) and (6) describe therefore the cross-Kerr refractive index experienced by the probe beam.’ The single-beam (Kerr, self) values follow ‘by comparing the number of permutations between distinguishable fields in the case of one- and two-beam experiments’, valid when the intrapulse molecular alignment is negligible: ‘The extrapolation results in dividing each cross-Kerr coefficient n_2j reported in [1] by (j + 1).’ The alignment contribution to n2 of N2 at 45 TW/cm^2, computed from the hyperpolarizability tensor, is ‘less than 2%’ (p. 1). The occurrence of the sign inversion is unaffected, so the authors keep the 2009 conclusions.

Table 1 (tbl_4a652954902a; checked against the image; units 10^-7 cm^2/TW, 10^-9 cm^4/TW^2, 10^-10 cm^6/TW^3, 10^-11 cm^8/TW^4, 10^-14 cm^10/TW^5; ‘two standard deviations of the fitted values’): n2 N2 1.1 +- 0.2, O2 1.60 +- 0.35, Ar 1.00 +- 0.09, air 1.2 +- 0.3; n4 N2 -0.53 +- 0.26, O2 -5.16 +- 0.53, Ar -0.36 +- 1.03, air -1.5 +- 3.0; n6 N2 1.40 +- 0.15, O2 4.75 +- 0.50, Ar 4.0 +- 0.5, air 2.10 +- 0.22; n8 N2 -0.44 +- 0.04, O2 -2.10 +- 0.14, Ar -1.72 +- 0.10, air -0.80 +- 0.06; n10 Ar 8.83 +- 0.50; I_inv N2 43, O2 25, Ar 34, air 34 TW/cm^2. Every entry is the 2009 Table 2 entry divided by j + 1 (2, 3, 4, 5, 6) to the printed digits (checked: -1.55/3 = -0.517 is printed -5.16 x 10^-9, the only last-digit difference), and the inversion intensities rise because the orders are scaled differently. The higher-order coefficients are recorded here only; they are refuted as a Kerr response (see loriot_2009’s notes: Wahlstrand et al. 2013 attribute the negative birefringence to a plasma grating; Wahlstrand et al. 2012 and 2018 find the bound-electron response linear in I up to and beyond ionisation).

Fig. 1 caption: ‘room temperature and 1 atm’ (the measurement tables of loriot_2009 say 1 bar).

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.