Photothermal Microscopy

Escola, Facundo Zaldívar; Kunik, Darío; Martı́nez, O. E.; Míngolo, N.

doi:10.1016/j.mspro.2015.04.123

Cited by 10 publications

(6 citation statements)

References 17 publications

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“…Photothermal methods are based on the various secondary effects that occur following the absorption of a non-stationary light flux by a sample [13,14]. In the case of photo reflection from a "thermal mirror", a spatial resolution of up to 1 µm is provided [15][16][17][18][19][20].…”

Section: Thermal Mirror and Interferometry Methodsmentioning

confidence: 99%

Thermo-Optical Measurements and Simulation in a Fibre-Optic Circuit Using an Extrinsic Fabry–Pérot Interferometer under Pulsed Laser Heating

Kotov

Старостин

Gorbatov

et al. 2023

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Advantages of using an external Fabry–Pérot interferometer (EFPI) as a high-speed local temperature deformation sensor are demonstrated for the fibre-optic circuit combining a powerful laser beam for surface heating with a low-power probing radiation. The difference in the formation of the heating and probing radiation provides a simple basis for varying the gap between the fibre end and the surface in order to change the ratio between the heating and EFPI measuring areas. Using an example of modelling the laser heating by radiation from a standard single-mode fibre, we demonstrate the possibility of employing the EFPI to measure the temperature deformation of the surface on a quasi-isothermal area with the temperature close to the maximum at gap values of more than 100 μm. With the condition of preliminary calibration, the proposed scheme can be used to evaluate the heat treatment of the surface with the speed of the applied photodetector. The practical possibilities of the method are demonstrated on examples of heating some metal and semiconductor samples by laser pulses of microsecond duration.

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Section: Thermal Mirror and Interferometry Methodsmentioning

confidence: 99%

Thermo-Optical Measurements and Simulation in a Fibre-Optic Circuit Using an Extrinsic Fabry–Pérot Interferometer under Pulsed Laser Heating

Kotov

Старостин

Gorbatov

et al. 2023

Axioms

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“…A wide range of modern physical problems is connected with measurements of thermal [5], optical [6] and pyroelectric [7] parameters of materials and with the investigation of the influence of structural and contact inhomogeneities on heat transfer processes [8][9][10][11]. In particular, serious attention has been paid in recent years to study the pyroelectric properties of new promising materials for IR radiation sensors and energy storage devices (energy harvesters) [12,13].…”

Section: Phio-2018mentioning

confidence: 99%

Optoelectronic Methods of IR-Photometry in Solving Thermal and Physical Problems

Александров¹,

Гаврилов²,

Kapralov³

et al. 2018

KEn

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“…Previous works of the group showed that methods based on photothermal techniques can display a high contrast between the different phases due to their distinct thermal diffusivity. Mapping structures with micrometric resolution, the study of homogeneity, composition and phase transformations in a diverse set of materials such as ceramics, metals, glass and thin layers have been achieved [14][15][16][17].…”

Section: Introductionmentioning

confidence: 99%