Double-pulsed holographic interferometry with photorefractive crystals for vibration and shock analysis

نویسندگان

  • M. Georges
  • C. Thizy
  • P. Lemaire
  • G. Roosen
  • G. Pedrini
  • H. Schubach
چکیده

We present the achievement of the european PHIFE project (Pulsed Holographic Interferometer for the analysis of Fast Events) concerning the development of holographic head principles connected to a YAG Q-switch double pulsed laser. Based on the results of a first laboratory development phase, a final prototype has been designed and built that incorporates both the laser and a modular holographic head. This device has been used in a variety of tests, mainly vibrations and shock analysis of solid objects proposed by industrial partners of the project. OCIS code : (120.2880) Instrumentation, measurement and metrology : holographic interferometry

برای دانلود رایگان متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Holographic interferometers based on photorefractive crystals for vibration measurements

Photorefractive crystals offer many advantages over other classical holographic recording media. They allow fast in-situ processable holographic recording as well as indefinite reusability. Moreover high signal-to-noise ratio can be reached as well as high resolutions. We present several types of holographic instruments using such materials. Here we will emphasize their applications in vibratio...

متن کامل

Holographic interferometry using anisotropic self-diffraction in Bi(12)SiO(20).

Anisotropic self-diffraction in photorefractive Bi(12)SiO(20) crystals is applied to the investigation of dynamic holographic recording through the diffusion process. Specific attention is paid to optimization of experimental parameters for real-time holographic interferometry. The resultant interferometer is applied to obtain both timeaverage and double-exposure interferograms of vibrating and...

متن کامل

Phase control strategies for stabilization of photorefractive holographic interferometer

A current problem encountered in holographic interferometry systems is the phase variations that arise from vibrations, from the use of optical fiber in one arm, by air convection or by unwanted movement between the object and the measurement device. The holographic device developed by CSL based on photorefractive BSO crystals has the advantage of high resolution fringes with the capability of ...

متن کامل

Real-Time Holographic Interferometry using Photorefractive Bi12SiO20 Crystals and their applications in Surfaces Analysis with Phase-Stepping Technique

This work searches to develop and to optimize a holographic interferometer that it uses the photorefractive Bi12SiO20 (BSO) crystals in diffusive regimen with configuration exhibiting diffraction anisotropy for RealTime Holographic Interferometry (RTHI) and applications in surfaces analysis. In RTHI with photorefractive BSO crystals, the writing-reading hologram process is made in real-time in ...

متن کامل

Visualization of aerodynamic flow fields using photorefractive crystals.

Interferometry based on double exposure Fourier transform holography in photorefractive crystals is applied for visualization of aerodynamic flow fields. The interferograms obtained are of similar quality as those produced using holographic film but with greatly simplified procedures. The results presented are obtained using a high-power cw argon laser and iron doped lithium niobate crystals. T...

متن کامل

ذخیره در منابع من

ذخیره در منابع من قبلا به منابع من ذحیره شده

{@ msg_add @}


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2008