Holography, unlike photography captures the complete information of the object. In it, both the phase and the amplitude of wave field of the object are captured. Holograms are capable of capturing and generating the three-dimensional information. The basic principle behind holography is Interference and diffraction
This project is a three-tier project exploring the holography applications ranging from basic imaging, digital 3D microscopy and holographic projections.
The first phase of project comprises of imitating classical holography in digital domain. Mathematical theory behind Fourier optics, diffraction and interference was analyzed and implemented to design Matlab based software that compute hologram pattern of given image. The resulting holograms can be printed on Transparencies using normal printers and can be used to reconstruct the original image using diode or He-Ne laser.
- The Key application of this is development of a basic laboratory tool to understand computer generated holography.
In second phase, application of digital holography in microscopy is explored. 3D scanning microscope was developed using a diode laser as a coherent source and a CCD (charge coupled device) array as a capturing device mounted on an X-Y table to scan the complete sample. The captured diffracted image is used to reconstruct the original particles using diffraction and interference models implemented in Matlab. The output provides a three-dimensional picture of the particles and their relative position to each other.
- The Key application of this is development of a low-cost 3D microscope capturing and displaying results in real-time with application from flow rate measurement to chemical analyses.
In the third portion holographic projections is implemented using rear projected holographic sheet. A console was designed to project light videos from a projector on to the rear projection sheet such that the image appear to be in mid-air to the audience.
- The Key application of this is development of a commercial display system which can integrate real and virtual environment.
- Tupac’s Coachella Cameo: Groundbreaking for Traffic Signs, Too (myparkingsign.com)
- Holographic technique could lead to bionic vision (nanowerk.com)
- One step closer to holograms in the home (stuff.co.nz)
The project was done by following students:
- Abdul Ahad Shams
- M. Ahsan Farooqui
- M. Sharjeel Javaid
- Salman Saeed Khan
- Schazil Najam
These students graduated from Ghulam Ishaq Khan Institute in Electronics Engineering in 2013
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