Vibration analysis by speckle interferometry with CO2 lasers and microbolometers arrays

Speckle interferometry in the time-average mode at long infrared wavelengths is shown for observing the mode shapes of vibrating objects. The long wavelength allows observing larger vibration displacements than what is achieved with visible wavelengths.

[1]  Jean-François Vandenrijt,et al.  Infrared Electronic speckle pattern interferometry at 10 μm , 2007, SPIE Optical Metrology.

[2]  Cédric Thizy,et al.  Digital holographic interferometry with CO2 lasers and diffuse illumination applied to large space reflector metrology [Invited]. , 2013, Applied optics.

[3]  D. Borza.  A new interferometric method for vibration measurement by electronic holography , 2002 .

[4]  Katherine Creath,et al.  Vibration-observation techniques for digital speckle-pattern interferometry , 1985 .

[5]  Wolfgang Osten,et al.  Digital Holographic Interferometry by Using Long Wave Infrared Radiation (CO2 Laser) , 2010 .

[6]  Cédric Thizy,et al.  Digital Holographic Interferometry with CO2 Lasers Applied to Aspheric Space Reflectors Testing , 2013 .

[7]  Wolfgang Osten,et al.  Nondestructive testing by using long-wave infrared interferometric techniques with CO2 lasers and microbolometer arrays. , 2013, Applied optics.

[8]  Pietro Ferraro,et al.  Digital holography at 10.6 μm , 2003 .

[9]  A Finizio,et al.  Imaging live humans through smoke and flames using far-infrared digital holography. , 2013, Optics express.

[10]  Wolfgang Osten,et al.  Mobile speckle interferometer in the long-wave infrared for aeronautical nondestructive testing in field conditions , 2013 .

[11]  Jean-François Vandenrijt,et al.  Electronic speckle pattern interferometry and digital holographic interferometry with microbolometer arrays at 10.6 μm. , 2010, Applied optics.