Hello all, hope that you are all well by the grace of almighty. Today we’ll discuss about holographic technology. Basically holographic technology using femtosecond laser will be discussed here.
An overview of Holographic Technology using Femtosecond Laser
Lets have a quick look at the contents:
- Material Patterning Technologies
- What is Holographic Technology
- Time line of Holographic
- Set up & working principle
- Encoding of Holographic using fento second laser
- Holographic fabrication using microprism array
- Holographic lithography of periodic two and three-dimensional microstructures
- Advances in technology
- Application and future scope
Material Patterning Technologies:
There are some material patterning technologies we may found from different sources, among them, some of the familiar technologies are:
2.Vapor Deposition Technologies
3.Laser Processing Technologies
So now come to the Laser Processing Technologies, this Laser Processing Technologies are divided into some parts, they are:
- Holographic Technology
- Particle Lens Array (PLA) Based Technology
- Single Beam Direct Laser Writing (SBDLW) Technology
Among them Holographic Technology is more useful and widely used technology
What is holographic Technology?
- Allows the light scattered from an object to be recorded and later reconstructed
- Optically store, retrieve, and process information.
- Preserve the 3-D information of a holographed subject.
Now lets have a quick look at the development of Holographic Technology:
Types of Holographic technology:
=>Illuminated by a spot of white incandescent light source, from front-above
=>The image consists of light reflected by the hologram
=>Produces multicolor holograms, makes images optically indistinguishable from the original objects
- Viewed with laser light, usually of the same type used to make the recording
- Need light source behind them
- Virtual image can be very sharp and deep
- No need for a real object
- Interference pattern is calculated digitally, using algorithms
setup of holographic technology:
Fig. : Schematic diagram of a typical experimental setup of holographic technology using Diffractive Beam Splitter (DBS)
>>Working of holography is divided into two phases:
>>Time varying light field is needed.
>>It can be controlled easily by the number of the beam and angles between two beams and the energy of the laser.
Recording of holographic technology:
Reconstruction of holographic technology:
Encoding of holographic by using femtosecond laser pulse:
1.Here is the schematic diagram of an experimental set up.
2.Ti:sapphire is used as light source, generates 800nm light pulse, repetition rate 10Hz.
3.The pulse energy varied from 10-3000micro jule.
4.The angle of intersection is varied from 10 to 160
Output of this experiment:
>Images showing that spatial and temporal coincidence of two FS laser beams is required for encoding.
Holographic Fabrication Using Microprism Arrays:
There are some advantages of this Holographic Fabrication Using Microprism arrays:
- MPA-based HL can construct controllable arrays of microstructures with nanoscopic internal patterns in a single exposure without employing a complicated setup of laser beams and optical components.
- This strategy enables mass production of highly efficient, free-standing fluorescent microparticles with internal periodic nanostructures by releasing the arrayed microstructure patterns from the substrate.
Holographic lithography of periodic two and three-dimensional microstructures in photoresist SU-8
>> The structures fabricated in SU-8 are chemically and mechanically stable.
>> Potentially usable as elements of micro-fluidic, micromechanical or photonic crystal devices.
Multi-photon fabrication of two-dimensional periodic structure by three interfered femtosecond laser pulses
Experimental set up
>> Good structural quality and periodicity was assessed by scanning electron microscopy (SEM) inspection.
>> The structures fabricated in SU-8 are chemically and mechanically stable and are potentially usable as elements of micro-fluidic, micro-mechanical or photonic crystal devices.
Advances in technology
>> Touchable holograms
>> Tactile holographic display with haptic feedback
>> Horizontal 360º view of a image on table top
>> User interfacing integrated displays
Applications & Future scope
- Educational applications
- Marketing with 3D holographic display
- 3D simulation displays for scientific visualization
- Improved virtual Reality and augmented reality
- Telepresence and video conferencing
- Entertainment displays
- Military and Space Applications
In conclusion we may say:
- Holographic Technology and Spectral Imagining has endless applications, as far as the human mind can imagine
- In future, holographic displays will be replacing all present displays in all sizes, from small phone screen to large projectors
So, hope that u’ve all enjoyed the technology, lets have the references from which i’ve collected the information: Md. Shamim Ahsan and Man Seop Lee, “Femtosecond Laser Processing of Materials: Fundamentals, Technologies, and Applications,” Lambert Academic Publishing (2013).  Seung-Kon Lee, Hyo Sung Park, Jun Hyuk Moon, and Seung-Man Yang, “ Holographic Fabrication of Micro Structures with Internal Nano patterns Using Micro prism Arrays”,Angew.Chem.Ed.2009.  Toshiaki Kondo, Saulius Juodkazis, Vygantas Mizeikis and Hiroaki Misawa,” Holographic lithography of periodic toward three-dimensional microstructures in photo resist SU-8”,Vol.14, No.17, OPTICS EXPRESS 7943.  Zhongyi Guo a, Shiliang Qu b, Yanhua Han b, Shutian Liu a,“Multi-photon fabrication of two-dimensional periodic structure by three interfered femtosecond laser pulses on the surface of the silica glass”, optcom. 6 August 2007.  Ahmed Elmorshidy, Ph.D.,“Holographic Projection Technology: The World is Changing.”; journal of telecommunications, volume 2, issue 2, may 2010  Thomas J. Naughton, “Capture, processing, and display of real-world 3D objects using digital holography”, 2010 IEEE Invited Paper  Stephan Reichelt, Ralf Haussler, Norbert Leister, Gerald Futterer, Hagen Stolle and Armin Schwerdtner, “Holographic 3-D Displays – Electro-holography within the Grasp of Commercialization”.  Masahiro H., ken-ichi Kawamura, Hideo H., “Encoding of holographic grating and periodic nano-structure by femtosecond laser pulse”, Applied Surface Science 197-198 (2002) 688-698  Toshiaki Kondo, Shigeki Matsuo, Saulius Juodkazis, Vygantas Mizeikis, and Hiroaki Misawa, “Multiphoton fabrication of periodic structures by multibeam interference of femtosecond pulses”, applied physics letters volume 82, number 17 28 april 2003  H. Ueki, Y. Kawata, and S. Kawata, “Three-dimensional optical bit-memory recording and reading with a photorefractive crystal: analysis and experiment”, applied optics, vol. 35, no. 14, 10 may 1996.
If you have any kinds of questions of query about this post, then feel free to contact. Have a great day. 🙂