Second harmonic generation by micropowders: a revision of the Kurtz–Perry method and its practical application

Aramburu, I.; Ortega, J.; Folcia, C. L.; Etxebarría, J.

doi:10.1007/s00340-013-5678-9

Cited by 40 publications

(60 citation statements)

References 43 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…At first, the THG signal may be directly generated by the surface of the sample within the surface coherence length L c,s =π/(k(3ω)+3k(ω)), where k(3ω) and k(ω) are the wave-vectors at the fundamental and third harmonic frequencies, respectively. Since the theory for THG in the limit of weak pump depletion is the same as for SHG, the irradiance of this THG signal writes 3 ∝ where 3 is the effective susceptibility of our sample and I(ω) is the light irradiance at the fundamental frequency ω [8][9][10]. Note that, due to the very small value of L c,s (<0.1 µm), the absorption of the THG signal within this length interval can be neglected.…”

Section: Resultsmentioning

confidence: 99%

Large optical third-order nonlinearities in a switchable Prussian blue analogue

Ould-Hamouda¹,

Iazzolino²,

Tokoro³

et al. 2017

Opt. Mater. Express

View full text Add to dashboard Cite

We report on the observation of an efficient coherent up-conversion via third harmonic generation (THG) in Rb 0.94 Mn[Fe(CN) 6 ] 0.98 .0.3H 2 O material. Our THG measurements at fundamental wavelengths ranging from 1200 to 2400 nm show that, in this spectral range, the THG signal overcomes the signal generated by frequency doubling. This demonstrates that this material possesses significant third-order nonlinear optical (NLO) responses. Its effective χ (3) value is at least two orders of magnitude greater than α-Quartz. We also demonstrate that this material exhibits a broad thermal hysteresis loop around room temperature, which makes it possible to simultaneously photo-commute its linear and thirdorder nonlinear optical properties.

show abstract

Section: Resultsmentioning

confidence: 99%

Large optical third-order nonlinearities in a switchable Prussian blue analogue

Ould-Hamouda¹,

Iazzolino²,

Tokoro³

et al. 2017

Opt. Mater. Express

View full text Add to dashboard Cite

show abstract

“…The maximal SHG signal is found for particle size r~ l C and odd multiples of l C . This model does not take into account many other parameters, e.g., the scattering of the crystalline particles of the sample, and has recently been revisited by Aramburu et al [28] from a theoretical point of view, but also from an experimental viewpoint as, e.g., sample preparation and detection geometry [29,30]. 2).…”

Section: Phase-matching Properties In a Randommentioning

confidence: 99%

“…Measurements in both setups are performed in reflection geometry, i.e., the backward SHG light is collected, which is the most commonly encountered case [28]. Actually, the SHG light is scattered in all directions and only one part is detected.…”

Section: Experimental Setup For P-shg and Tr-shgmentioning

confidence: 99%

See 1 more Smart Citation

Relevance of the Second Harmonic Generation to Characterize Crystalline Samples

et al. 2015

View full text Add to dashboard Cite

The application of powder second harmonic generation (P-SHG), temperatureresolved SHG (TR-SHG), and SHG microscopy (SHGM) in the characterization of bulk crystalline samples is illustrated. P-SHG applied to powder samples can be an extremely sensitive approach to detect the absence of an inversion center in crystalline structures, TR-SHG serves to monitor temperature-induced phase transitions, and SHGM is used in the detection of non-centrosymmetric zones inside a heterogeneous material. These methods are of great relevance, e.g., in the pharmaceutical industry where crystalline active pharmaceutical ingredients are often made of a single enantiomer and are therefore non-centrosymmetric. Herein, several examples are provided to describe how a given SHG signal should be interpreted. A general procedure to carry out a P-SHG experiment is illustrated in detail.

show abstract

“…Compared to this version of the material, while comprehensively studied [3] and well exploited technologically [4][5][6], powders are tacitly considered easier and far less expensive to synthesize. LN powders (LNPws) have served in the past only as survey materials, for example, in the prediction of the nonlinear second order optical capabilities of unavailable single crystals by applying the Kurtz-Perry method in the powdered version [7,8]. Nevertheless, recent developments in LNPws are certainly attracting the attention of scientists and engineers who seek to exploit their potential use in a wide range of applications that span from the construction industry to nonlinear optics.…”

Section: Introductionmentioning

confidence: 99%

Determination of the Chemical Composition of Lithium Niobate Powders

et al. 2019

View full text Add to dashboard Cite

Existent methods for determining the composition of lithium niobate single crystals are mainly based on their variations due to changes in their electronic structure, which accounts for the fact that most of these methods rely on experimental techniques using light as the probe. Nevertheless, these methods used for single crystals fail in accurately predicting the chemical composition of lithium niobate powders due to strong scattering effects and randomness. In this work, an innovative method for determining the chemical composition of lithium niobate powders, based mainly on the probing of secondary thermodynamic phases by X-ray diffraction analysis and structure refinement, is employed. Its validation is supported by the characterization of several samples synthesized by the standard and inexpensive method of mechanosynthesis. Furthermore, new linear equations are proposed to accurately describe and determine the chemical composition of this type of powdered material. The composition can now be determined by using any of four standard characterization techniques: X-Ray Diffraction (XRD), Raman Spectroscopy (RS), UV-vis Diffuse Reflectance (DR), and Differential Thermal Analysis (DTA). In the case of the existence of a previous equivalent description for single crystals, a brief analysis of the literature is made.

show abstract

Second harmonic generation by micropowders: a revision of the Kurtz–Perry method and its practical application

Cited by 40 publications

References 43 publications

Large optical third-order nonlinearities in a switchable Prussian blue analogue

Large optical third-order nonlinearities in a switchable Prussian blue analogue

Relevance of the Second Harmonic Generation to Characterize Crystalline Samples

Determination of the Chemical Composition of Lithium Niobate Powders

Contact Info

Product

Resources

About