Multipoint vibrometry with dynamic and static holograms

Haist, T.; Lingel, C.; Osten, W.; Winter, M.; Giesen, M.; Ritter, F.; Sandfort, K.; Rembe, C.; Bendel, K.
December 2013
Review of Scientific Instruments;Dec2013, Vol. 84 Issue 12, p121701
Academic Journal
We report on two multipoint vibrometers with user-adjustable position of the measurement spots. Both systems are using holograms for beam deflection. The measurement is based on heterodyne interferometry with a frequency difference of 5 MHz between reference and object beam. One of the systems uses programmable positioning of the spots in the object volume but is limited concerning the light efficiency. The other system is based on static holograms in combination with mechanical adjustment of the measurement spots and does not have such a general efficiency restriction. Design considerations are given and we show measurement results for both systems. In addition, we analyze the sensitivity of the systems which is a major limitation compared to single point scanning systems.


Related Articles

  • Matrix and Linear Interference Patterns in Photographic Emulsions of Transmission Holograms Recorded at Different Wavelengths. Petrov, V. // Optics & Spectroscopy;Sep2002, Vol. 93 Issue 3, p469 

    Matrix and linear interference patterns formed in emulsion layers of transmission holograms are considered. Boundary effects are observed between matrix and linear interference patterns, as well as between a linear interference pattern and the unexposed part of a hologram.

  • Variation of Parameters of Pit Deformation when Recording Holograms of a Planar Wavefront. Panasyuk, L. M.; Nastas, A. M. // Optics & Spectroscopy;Feb2000, Vol. 88 Issue 2, p307 

    Variation of the deformation structure of the surface of a photothermoplastic carrier is demonstrated in the case where high frequencies of an interference pattern are recorded. A smooth variation of the period of a grating projected is shown to lead to a variation of the pit diameter in a...

  • Metasurfaces-based holography and beam shaping: engineering the phase profile of light. Scheuer, Jacob // Nanophotonics (21928606);Jan2017, Vol. 6 Issue 1, p137 

    The ability to engineer and shape the phase profile of optical beams is in the heart of any optical element. Be it a simple lens or a sophisticated holographic element, the functionality of such components is dictated by their spatial phase response. In contrast to conventional optical...

  • Quantification of faults in rotating machines. Sinha, Jyoti K. // Noise & Vibration Worldwide;Oct2007, Vol. 38 Issue 9, p20 

    The article reports on the use of vibration measurement and vibration based fault diagnosis in identifying errors in rotating machines. According to the article, such methods are used since they are regarded as being sensitive to structural and process alterations on parameters. In addition, the...

  • High-sensitivity holographic interferometry method for studying transparent objects with small transverse size. Lyavshuk, I. A.; Lyalikov, A. M. // Technical Physics;Nov2008, Vol. 53 Issue 11, p1458 

    A new method for studying transparent objects with a small transverse size is considered. The method is based on lateral-shift holographic interferometry combining the displacement of the transparent object under investigation between the recordings of a pair of holographic interference patterns...

  • Multispectral Wavefronts Retrieval in Digital Holographic Three-Dimensional Imaging Spectrometry. Yoshimori, Kyu // AIP Conference Proceedings;4/15/2010, Vol. 1236 Issue 1, p167 

    This paper deals with a recently developed passive interferometric technique for retrieving a set of spectral components of wavefronts that are propagating from a spatially incoherent, polychromatic object. The technique is based on measurement of 5-D spatial coherence function using a suitably...

  • Films made of substituted azobenzene polycomplexes with cobalt for polarization holography. Davidenko, N.; Davidenko, I.; Popenaka, A.; Savchenko, I.; Shumelyuk, A. // Journal of Applied Spectroscopy;Nov2007, Vol. 74 Issue 6, p926 

    We have studied the possibility of recording holograms in films of the 4-methacroyloxy-(4′-carboxy-3′-hydroxy)-2-chloroazobenzene polycomplex with cobalt, with parallel and orthogonal orientation of the light beam polarization. We have shown that these films can be used as recording...

  • Content of the following issue of OpticheskiÄ­ Zhurnal (Journal of Optical Technology).  // Optics & Spectroscopy;Jan2007, Vol. 102 Issue 1, p147 

    A list of papers to be published in the January special issue of the "Journal of Optical Technology" is presented. The list includes "IR Technology at NPO State Institute of Applied Optics," by V. P. Ivanov and A. F. Belozerov, "Optical Deflectors for Modern Thermal Imaging Devices," by V. I....

  • Fabrication of desired three-dimensional structures by holographic assembly technique. Ngoc Diep Lai; Tsao Shih Zheng; Danh Bich Do; Jian Hung Lin; Chia Chen Hsu // Applied Physics A: Materials Science & Processing;Jul2010, Vol. 100 Issue 1, p171 

    We demonstrate a novel technique to fabricate desired three-dimensional (3D) periodic structures by holographically assembling multiple one-dimensional (1D) or multiple two-dimensional (2D) structures. Thanks to the high-absorption effect of the used material, we fabricated for each time, by...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics