Veronika A. Babenko

Application of holographic interferometry for determining the solubility of gases in liquids

The effect of a gas dissolved in a liquid on the variation of the refractive index of the compressed mixture was studied. The compression process was monitored with the aid of a holographic interferometer. The sensitivity of this method allows the compressibility of water and the solubility of helium and nitrogen to be studied at pressures below 4 atm. A procedure for obtaining qualitative and quantitative data on the solubility of gases in liquids is proposed.

Holographic microscope interferometer

A simple and easy to use holographic microscope interferometer (HMI) for biological and material science applications is described. The unit is based on an ordinary microscope accomplished by He-Ne laser, several optical elements, a photothermoplastic (PTP) recorder, and a CCD-camera. Blood and plant cells, as well as internal solid bodies defect images, are demonstrated. Characteristics and application of the unit are discussed.

Application of real-time holographic interferometry for analyzing samples and imaging processes during flat-capillary electrophoresis

Application of the real-time holographic interferometry technique to the analysis of liquid samples by means of electrophoresis in a flat capillary is demonstrated.

Correlator-interferometer for real time phase object recognition

A correlator-interferometer for the phase objects real time recognition has been developed. The certain conditions under which it may operate successfully, have been examined.

Optimization of wavefront recording and reconstruction in real-time holographic interferometry

The optimization of the ratios of recording and reconstructing object and reference beams, and also the effect of the dynamic range, resolution and hologram size on the informativity of interferograms are considered, which results in obtaining the higher informativity of real-time holographic interferograms.

Studying living phase objects by holographic interferometry techniques

The possibility of using a holographic interferometer technique for the investigation of living human blood erythrocytes is considered.

Sample analysis and process visualization at liquid analytical electrophoresis in a flat capillary

The feasibility of using real-time holographic interferometry for sample analysis and process visualization at liquid analytical electrophoresis in a flat capillary is demonstrated. Electrophoresis interferograms are taken and analyzed.

Comparative characteristics of real time correlators-interferometers based on using reconstructing reference and object beams in thin and thick media

The comparative analysis of the characteristics for combined correlators-interferometers is given for the cases of two-beam recording in thin and thick media. It has been noted that the thick medium recording provides the output data bigger accuracy than thin medium recording. Another advance of thick medium recording is the possibility to obtain the set of correlograms describing the object state variations in different moments. This possibility appears due to the multiplexing procedure performance.

Fiber infrared holographic interferometer for nondestructive testing

In this paper, the optical set-up and construction of the portable hand held holographic camera is described. The high output power (150 mW) semiconductor pig tailed laser diode as light source was used. The wavelength of the emitted radiation is 980 nm. Optical fiber elements have been used. The interferometry correlation methods was used for testing the possibility to measure the changes between the initial ideal fiber picture and current stage of fiber.

Real-time holographic interferometer correlator

We suggest using a holographic interferometer correlator for a real-time analysis of changes in objects transparent in the visible spectral range. Combined with determination of the correlation function, holographic interferometry ensures high-quality visualization of the phase inhomogeneities in transparent objects.