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 `__ · :doc:`Catalogue ` · :doc:`Review register ` DOI: `10\.1364/oe\.18\.003011 `__ **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 :doc:`review register ` for the checks and decisions.