Lasers and Laser Research at KFUPM

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SAICSC-ACS Technical Seminar
Lasers and Laser Research at KFUPM
Zain Yamani KFUPM-Physics
22-8-1426 26-9-2005
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Plan

• Introduction
• What lasers are
• What their properties are
• Laser applications (in general)
• Laser Research at KFUPM
• Conclusions

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Introduction
LASER is an acronym for Light Amplification by
Stimulated Emission Radiation
Lasers were first invents in the late
1950saround 1958
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Introduction
Three level laser (applet)
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Properties of Laser
Highly Directional
Highly Directional ? High Intensity (albeit not
high power!!)
Lets do a rough calculation.. how much light
power falls on a door knob 10 meters away from a
hand held (5 milli-watt) laser, and compare it to
that due to a 100 watt lamp.
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Properties of Laser
Monochromaticity
Laser line width lt 1 GHz millionth of spectral
width of visible light (or better)
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Properties of Laser
Coherence
Laser can be ideally focused ? high.. high..
high intensity!!
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Properties of Laser
Repetitive short pulses
average power repetition rate x pulse width x
peak power
1 watt
10 ns
???
10 Hz
Power (Mega-Watt)
Note pulse width not drawn to scale
1/10
2/10
0/10
Time (s)
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Laser Applications
Medical Applications
Cutting and Welding
Construction
Communications
Environmental Applications
Atomic Spectroscopy
Security and Defense
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Laser Applications
Cutting
Welding
click here
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Laser Applications
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Laser Applications
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Laser Research _at_ KFUPM
CAPS

• Research using laser technology
• Technical and educational services
• Training of graduate and undergraduate students

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Laser Research _at_ KFUPM
Stimulated Raman Scattering (SRS)
Desulphurization
Photo-acoustics
Light Detection and Ranging (LIDAR)
Supersonic Jet Spectroscopy
Laser Induced Breakdown Spectroscopy (LIBS)
Molecular Dynamics
Photo-Induced Chemistry
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Oil Fingerprinting (spectroscopy)

• The problem
• oil dumping in the sea
• The need
• know which ship dumps the oil
• The solution fingerprint oils using remote
  sensing technique (US patent 6,633,043)

Spectral Fingerprints of neat Saudi Marketed
Crude Oils Using the Patented Technique
Dr. Hegazi
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Oil Fingerprinting (spectroscopy)
Schematic diagram of the setup
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Oil Fingerprinting (spectroscopy)
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Oil Fingerprinting (spectroscopy)

• S. Aramco RD
• Deliberations
• Contract (2 years)
• Implementation of project (build fingerprint
  database of oils build a finished product)
• Progress (Phase 1)

Fingerprints of the same crude oils after
seawater weathering
Next generation of the technique enhanced
fingerprints for weathered oils
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Thin Films (sensors)

• Thin films gas sensors
• energy saving applications
• thin films thermal switches
• optics

Dr. Ayub et. al.
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Thin Films (sensors)
Energy Saving Applications
Applications
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DE-COKING OF COKED CATALYSTS
Dr. Al-Jalal Dr. Khan
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Photo-induced Chemistry Methane Cracking

• The problem methane utilization and
  transportation hydrogen production
• The need transform methane into ethane and
  higher hydrocarbons plus hydrogen

Dr. Gondal et. al.
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Photo-induced Chemistry Methane Cracking
M. A. Gondal, Z. H. Yamani, M. A. Ali, A.
Al-Arfaj and M. A. Dastageer (2003) Method for
the conversion of methane into C2 and higher
hydrocarbons using UV laser US PTO, September
3, 2003, Application 10/653,055
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Stimulated Raman Scattering (SRS)
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Laser Induced Breakdown Spectroscopy (LIBS)
Detour ?
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Atmospheric pollution monitoring (LIDAR)
Another Detour ?
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I am sure I have all the time in the world, left!
Is there time for just one joke?
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Conclusion
I hope I have been able to stimulate your
interest in knowing more about lasers and laser
research at KFUPM.
Basic and Applied Research is being conducted at
CAPS in the fields of spectroscopy, environmental
protection, petro-chemistry, thin films ...etc.
Much more than can be done when more scientists
become active in the field.
Researchers at CAPS welcome collaborative
projects and/ or exchange of experience or ideas
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Acknowledgments
I acknowledge my past and current colleagues
including professors Gondal, Al-Adel, Klein, Dr.
Hameed, Mr. Hussain, Mr. Mastromarino, Mr.
Dastageer and the rest of the CAPS team.
KFUPM is gratefully acknowledged for its
continuous support.
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Acknowledgments
Thank you for your attention..
wa assalam alaikum wa rahmatullahi wa barakatuh!!
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Laser Applications
Laser pointer and laser level
Construction and civil engineering
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Laser Applications

• Lasers used in Medical applications
• CO2 Laser
• Nd YAG Laser
• Ar Laser
• Dye Laser

Whats special about using lasers in medicine?
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Laser Applications
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Laser Applications
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Laser Applications
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Laser Applications
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Laser Applications
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Laser Applications
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Laser Applications
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Laser Applications
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Laser Applications
Why use a laser in compact disks?
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Photo-induced Chemistry Methane Cracking