1. Slow Light Photon Physics Anke Kuijk
Joe T. Mok and Benjamin J. Eggleton, Nature 433, (2005)
Matthew S. Bigelow, Nick N. Lepeshkin and Robert W. Boyd, Phys. Rev. Lett. 90, (2003)
Matthew S. Bigelow, Nick N. Lepeshkin and Robert W. Boyd, Science 301, (2005)
Anke Kuijk

2. Overview Introduction Stimulated Brillouin Scattering
Fibers
Coherent Population Oscillations
Ruby
Alexandrite

3. Slowing light down Refractive index and absorption Spectral resonances
Electromagnetically induced transparancy

4. Stimulated Brillouin Scattering
Fibers

5. Stimulated Brillouin Scattering
100 ns pulse can be slowed down by 30 ns while experiencing 1000-fold amplification
Better results with EIT
Combine amplification with delay
Amplification not constant with delay
Directly compatible with fiber-optics based communication network
First optically controlled pulse delay

6. Coherent Population Oscillations
Ruby
Pump ω1
Probe ω3 = ω1 + δ
Spectral hole
δ*T1  1

7. Coherent Population oscillations
Ruby
Light slowed down to 58 m/s
No frequency or mode locking
Room temperature
Higher absorption than EIT

8. Coherent Population Oscillations
Alexandrite
Excited state absorption
Coherent population oscillations
78% mirror symmetry
22% inversion symmetry

9. Coherent Population Oscillations
Alexandrite
Roomtemperature and solid state
Speed of light in Alexandrite:
91 m/s
-800 m/s

10. Conclusion
SBS and CPO are techniques that can be used to slow down light at roomtemperature in solid state materials
Applications lie in photonics and fiber-optics based telecommunication