Abstract
This work presents a new technique for the measurement of second-order optical nonlinear coefficients from the absolute radiant power of the parametric fluorescence emission. It is based on calibrated detectors regarded as secondary radiometric standards. This technique makes it possible to skip a number of problems usually encountered with standard techniques based on calibrated neutral density filters and reference sources of light at much higher power levels. We infer a value for the d31 nonlinear coefficient of LiIO3 from spectral measurements of the fluorescence power integrated over all solid angles, by denning the wavelength bandwidths with interference filters. Moreover, by performing the measurements on the ultraviolet and visible emission lines of an argon ion laser in the range from 351 to 488 nm, the wavelength dependence of d31 is compared with the expected one obtained by Miller’s dispersion law.
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Borsa, G., Castelletto, S., Godone, A. et al. Measurement of Second-Order Optical Nonlinear Coefficient from the Absolute Radiant Power of Parametric Fluorescence in LiI03. OPT REV 4, 484–489 (1997). https://doi.org/10.1007/s10043-997-0484-4
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DOI: https://doi.org/10.1007/s10043-997-0484-4