Teaching

Ultimate teaching: A teacher of the future should be able to explain concepts in such a way as if knowledge is teleported to the mind of the student.

For undergraduates

1) General Physics I 

2) General Physics II

For graduates

1) Atomic Spectroscopy 

2) Special Topics in Atomic Physics

3) Nonlinear Optics and Quantum Optics

 Research Interest

Creating New Knowledge:  Research should be done because there are unknown and creativity, and these elements must be balanced.

1. Method for producing superintense laser field.
2. Optical transistor and Quantum Velocimeter from Quantum coherence with atomic motion. NEW pdf
3. Backscattered CARS from microparticles composed of molecules. NEW, pdf coming soon
4. Quantum correlation of photons  in amplifiers and lasers.
5. Propagation and dynamics of intense laser pulses.
6.  Laser cooling of molecules and manipulation of particles with light force.
7.  Quantum nonlinear optics in artificial structures like photonic crystals.

Selected Research Works 

 Photon Correlation

    Photons are thought a independent particles. If atoms can be correlated, why not photons. Correlated photons show interesting characteristics; interesting for being beyond usual perception and being useful for technological applications such as subwavelength microscopy, lithography and precision spectroscopy.  Can you imagine light with correlated photons? Can you imagine the "light in Heaven"?

     

•  “Improving quantum microscopy and lithography via Raman photon pairs: II. Analysis”, M. O. Scully and C. H. Raymond Ooi, Journal of Optics B: Quantum Semiclassical Optics 6, S816 (2004).  Improvingquantummicroscopyandlithogr.pdf
• "Correlation of Photon Pairs from Double Raman Amplifier: Generalized Analytical Quantum Langevin Theory”, C. H. Raymond Ooi, Qingqing Sun, M. Suhail Zubairy and Marlan O. Scully, Physical Review A 75, 013820 (2007). CorrelationofphotonpairsfromdoubleRa.pdf

 Quantum Microscopy

 When two atoms interact, we have a new entity: a two-atom, which produces correlated photons that yield information on the strength of the interaction, i.e. the interatomic distance.

 

• “Quenching the Effects of Dipole-dipole Interaction on Two-Photon Correlation from Two Double-Raman Atoms”, C. H. Raymond Ooi, Physical Review A 75, 043817 (2007).Quenchingthecollectiveeffectsonthetw.pdf
• “Coherent Effects on Two-Photon Correlation and Directional Emission of Two Two-level Atoms”, C. H. Raymond Ooi, Byung-Gyu Kim and Hai-Woong Lee, Physical Review A 75, 063801 (2007). Coherenteffectsontwo-photoncorrelati.pdf

Entangled Two-Photon Laser

 Atoms can be entangled. Photons can too. Why not put entangled photons in phase? We have a new kind of laser, e.g. entangled two-photon laser.

“Continuous source of phase-controlled entangled two-photon laser”, C. H. Raymond Ooi, Physical Review A 76, 013809 (2007) Continuoussourceofphase-controlleden.pdf

Coherent backscattering of CARS signal from a microparticle

Looking for a microparticle in a haystack by shining a laser on it? It sounds impossible. We found the backscattered light is promisingly large and coherent, about 10% of the incident light. This gives a new spectroscopic tool.

“Theory of Femtosecond Coherent anti-Stokes Raman Backscattering Enhanced by Quantum Coherence for Standoff Detection of a Bacterial Spore”, C. H. Raymond Ooi, Guy Beadie, George W. Kattawar, John F. Reintjes, Y. Rostovtsev, M. Suhail Zubairy, and Marlan O. Scully, Physical Review A 72, 023807 (2005). FemtosecondCARSbackscatteringenhance.pdf

Superconducting Photonic Crystal

Laser Cooling of Molecules

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Words of Wisdom

Scientists use the laws of Nature to earn a living.

There are supreme laws for using the laws of Nature.

Breaking these laws could be catastrophic. 

Wise words are profound and truthful.

Ancient philosophy can avoid natural catastrophies from imbalanced acts of mankind.

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Philosophy

 

Heaven and Earth last forever.
Why do heaven and Earth last forever?
They are unborn,
So ever living.
The sage stays behind, thus he is ahead.
He is detached, thus at one with all.
Through selfless action, he attains fulfillment. 

Ancient people with magnificent beard (the sign of mental and spiritual maturity) are intellectually, morally and spiritually profound, like Confucius: the great Man of literacy.

Nowadays, people are too developed materialistically but primitive spiritually. They lose the true sense of greatness. Their minds are restricted by materialistic pursuit.

a)  b)c)

a) Korea University, where I earn a living from those who hardly know me.

b) Beauty and harmony are in Nature. Nowadays, people abuse Nature and seek artificial beauty like this fountain-lake in KAIST which is, although very beautiful, cannot match the natural beauty of Nature.

c) Korean foods, simple, plain and healthy. Many things are good when simple but modern people create a mess by incorporating decorations into foods. That is the foolishness of "ingenuity".

Peace: Ancient beauties cannot be found in modern times. Why? Earth has been predominantly inhabited by men with lack of intrinsic virtue. Mother nature degrades due to these men. (right) A path through tranquility in a jungle of Malaysia. The best elements are found in Nature. The worst thing is craving to be recognized by fellow human beings.  No prize is greater than the prize from God, acquired through self-fulfillment and lasts forever. A person who can understand this has reached a high mental state.

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Futuristic Elements

Advanced technologies at present day don't entirely belong to human beings !

Aren't you surprised to see science has advanced rapidly in the early 1900s? Why this time?

Modern technologies owe a lot to ancient Chinese who invented paper, explosives, printing, compass and astronomy, but used their inventions in a wise manner.