Simultaneous generation of pulsed, high coherence red, green, and blue (RGB) wavelengths from a single ruby laser source for colour holography
In general, three different lasers are used to obtain the RGB wavelengths necessary for colour holography. This research would focus towards development of a pulsed RGB holographic laser from a single ruby laser employing nonlinear Raman conversion and harmonic conversion techniques.
Colour holography is one of the key technologies being considered for 3 dimensional recording and displays. Pulsed lasers for holography require coherence length that matches the maximum field of depth to be recorded; necessary pulse energy to illuminate the recording volume; good spatial coherence, preferably a TEM00 mode; pulse durations in the order of nanoseconds; and a good combination of RGB (red, green, blue) wavelengths to cover almost all colours which are perceptible by human eye (CIE chart). An RGB laser fulfilling these criteria is essential for recording the master holograms.
The intention of this research is to develop a RGB holographic laser based on a single ruby laser with the following parameters: wavelengths: (694 nm, 514 nm, 488 nm) or (694 nm, 535 nm, 438 nm); pulse width: 30 ns; coherence length: > 1 m; transverse mode: TEM00.
The RGB laser would be constructed from a 694 nm ruby laser that is available at Aberdeen University. The other two wavelengths can be generated from a combination of Raman wavelength shifting (either in hydrogen, deuterium, or Barium Nitrate) and second harmonic conversions. The two combination of RGB wavelengths (as stated above) would be development to compare which combination yields good chromaticity. The research would generally concentrate on the study of the nonlinear wavelength conversion processes with the aim of optimizing the wavelength conversion efficiencies.
The successful applicant will have a first or upper second class degree (or equivalent) in Electrical/Electronic Engineering, Physics, Mechanical Engineering. Knowledge of Laser and Optics would be advantageous.
There is no funding attached to this project, it is for self-funded students only.
Formal applications can be completed online: http://www.abdn.ac.uk/postgraduate/apply. You should apply for PhD in Engineering, to ensure that your application is passed to the correct College for processing. Please ensure that you quote the project title and supervisor on the application form.
Informal enquiries can be made to, Dr Thanga Thevar, University of Aberdeen with a copy of your current CV and a covering letter detailing your suitability for the project. Email: [email protected]). All general enquiries should be directed to the Graduate School Admissions Unit ([email protected]).