Sensitivity of Z-scan using diffraction efficiency

Fedus, Kamil; Boudebs, Georges

doi:10.1016/j.optcom.2010.10.046

Cited by 11 publications

(5 citation statements)

References 25 publications

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“…In order to optimize the characterization of materials, various applications and different approaches were proposed by using different objects and different methodologies [138][139][140][141]. Most of the attention was focused on the issue of the sensitivity measurement while increasing the S/N ratio.…”

Section: Optimization Of Z-scanmentioning

confidence: 99%

Techniques for nonlinear optical characterization of materials: a review

Araújo¹,

Gomes²,

Boudebs³

2016

Rep. Prog. Phys.

130

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Various techniques to characterize the nonlinear (NL) optical response of centro-symmetric materials are presented and evaluated with emphasis on the relationship between the macroscopic measurable quantities and the microscopic properties of photonic materials. NL refraction and NL absorption of the materials are the phenomena of major interest. The dependence of the NL refraction and NL absorption coefficients on the nature of the materials was studied as well as on the laser excitation characteristics of wavelength, intensity, spatial profile, pulse duration and pulses repetition rate. Selected experimental results are discussed and illustrated. The various techniques currently available were compared and their relative advantages and drawbacks were evaluated. Critical comparisons among established techniques provided elements to evaluate their accuracies and sensitivities with respect to novel methods that present improvements with respect to the conventional techniques.

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Section: Optimization Of Z-scanmentioning

confidence: 99%

Techniques for nonlinear optical characterization of materials: a review

Araújo¹,

Gomes²,

Boudebs³

2016

Rep. Prog. Phys.

130

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“…Moreover, intrinsic discrepancies in the measured values are well explained in Ref. [17]. Figure 6 plots the beam centroid positions with and without the knife edge during the scanning.…”

Section: Time-resolved Baryscanmentioning

confidence: 54%

“…This is the reason why it is more relevant to compare Z-scan and Baryscan in exactly the same experimental grounds as performed previously [23]. To conclude this section, the tremendous advantage of the Baryscan method is not that it relies on any artifact linked to a normalization process [16,17] but that the PSD provides a real measurable electrical signal.…”

Section: Technical Discussionmentioning

confidence: 90%

“…close to 400 [16]. Nevertheless, such large factors could be questioned, as they usually correspond to very weak transmitted signals, and recently Fedus and Boudebs [17] have shown that, considering diffraction efficiency, the overall gain is not that important. A more sophisticated solution allows one to deduce nonlinear characteristics through a numerical treatment by monitoring the probe beam shape on a CCD camera [18].…”

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confidence: 99%

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Transverse pseudo-nonlinear effects measured in solid-state laser materials using a sensitive time-resolved technique

et al. 2012

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We present a detailed study of the Baryscan technique, a new efficient alternative to the widespread Z-scan technique which has been demonstrated [Opt. Lett. 36:8, 2011] to reach among the highest sensitivity levels. This method is based upon the measurement of optical nonlinearities by means of beam centroid displacements with a position sensitive detector and is able to deal with any kind of lensing effect. This technique is applied here to measure pump-induced electronic refractive index changes (population lens), which can be discriminated from parasitic thermal effects by using a time-resolved Baryscan experiment. This method is validated by evaluating the polarizability variation at the origin of the population lens observed in the reference Cr 3+ :GSGG laser material.

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“…Evidently, we observe that the diffracted energy into the wings of the transmitted beam depends on z, the position of the NLM. For a quantitative description of the nonlinearly induced energy transfer we define the diffraction efficiency as in reference [13]:…”

Section: Resultsmentioning

confidence: 99%