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Lecture VI

Lecture VI

Lecture VI. LASER. L ight A mplification by S timulated E mission of R adiation. Spontaneous emission. Stimulated emission. Energy level diagram. The possible energies which electrons in the atom can have is depicted in an energy level diagram. T he operation of the Laser.

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346 views • 27 slides
Ch 6: Optical Sources

Ch 6: Optical Sources

Ch 6: Optical Sources. Variety of sources. LS considerations:. Wavelength. Dl. Output power. Modulation. Coupling. Cost/performance. LED. Operation. Spontaneous emission. LED. Recent advances:. l =hc/ e PH. Porous silicon. Semiconductor polymers. LED: Light Emission.

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537 views • 25 slides
Speaker:Guo-Shuen Wen Advicer:Ja-Hon Lin

Speaker:Guo-Shuen Wen Advicer:Ja-Hon Lin

Mirrorless lasing from nematic liquid crystals in the plane waveguide geometry without refractive index or gain modulation. Speaker:Guo-Shuen Wen Advicer:Ja-Hon Lin. Outline. Introduction Methodology Results and discussion Conclusions. Introduction.

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271 views • 12 slides
www-g.engm.ac.uk/cosmos

www-g.engm.ac.uk/cosmos

Band-edge liquid crystal lasers S.M. Morris, P.J.W. Hands, T.D. Wilkinson, H.J. Coles Centre of Molecular Materials for Photonics and Electronics (CMMPE) Department of Engineering, University of Cambridge. Ingredients for a band-edge liquid crystal laser. Gain medium

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1. Circuit and lasing mechanism

1. Circuit and lasing mechanism

Single-artificial-atom lasing and its suppression by strong pumping. S. Ashhab 1,2 , J. R. Johansson 1 , A.M. Zagoskin 1,3 , and Franco Nori 1,2 1 Advanced Science Institute, The Institute of Physical and Chemical Research (RIKEN), Wako, Saitama, Japan

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122 views • 1 slides

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