Effects of wavelength change in holographic reconstructions
Abstract
Holographic imaging is necessary in some particulate measurements in test facilities at AEDC. Additionally, projection of holographic images of infrared (IR) test objects is being considered to enhance the IR sensor test capability at AEDC. Lasers of different wavelengths often are necessary in the recording and reconstruction of the required holograms. As a result, a study of the effects of a wavelength change between the recording and reconstruction illumination on the aberration, resolution, and location of holographically reconstructed images was experimentally undertaken. Control of aberration and resolution degradation, to the extent possible, is described.
- Publication:
-
Final Report
- Pub Date:
- August 1981
- Bibcode:
- 1981aedc.rept.....M
- Keywords:
-
- Holography;
- Image Reconstruction;
- Infrared Imagery;
- Wave Front Reconstruction;
- Wavelengths;
- Aberration;
- Distortion;
- Dynamic Response;
- Frequency Ranges;
- Image Processing;
- Optical Filters;
- Instrumentation and Photography