Lectures: 1. Interaction of photons with atoms - spontaneous emission, absorption, stimulated emission. 2.Coherent optical amplifier - amplifier gain, phase shift, amplifier bandwidth 3.Pumping of optical amplifier - four-level pumping, three-level pumping, pumping examples. 4. Nonlinearity and saturation - saturated gain coefficient, homogeneously and inhomogeneously broadened amplifiers 5.Laser - theory of of laser oscillations, optical resonators and feedback, conditions for laser oscillation start 6. Laser radiation features - internal and external photon flux, spectral distribution and mode structure of laser radiation 7. Pulse laser - gain switching, cavity Q-switching, cavity dumping, mode locking, pulse laser applications 8. Photons in semiconductors - energy bands, electron and hole concentration, generation, recombination, injection. 9. Interaction of photons with electrons and holes - band-to-band absorption and emission, absorption rate, spontaneous emission, stimulated emission 10. Light-emitting diodes - injection electroluminescence, characteristics of light-emitting diodes 11. Semiconductor laser amplifiers - gain coefficient, bandwidth, pumping, peak gain coefficient 12. Semiconductor injection lasers - gain, feedback and oscillations, laser threshold, spectral distribution, mode structure 13. Semiconductor photodetectors - external and internal photoeffect, quantum efficiency, sensitivity, response time, internal gain. 14. Semiconductor photodetectors - photoconductors, photodiodes, avalanche photodiodes, photodetector noise Practicals: 1. Example solving: Interaction of photons and atoms - absorption, spontaneous emission, stimulated emission 2. Example solving: Laser amplifiers - population inversion, gain, optical pumping, saturation 3. Example solving: Lasers - optical resonators, gain, logitudinal modes, mode selection 4. Experimental tasks with He-Ne lasers 5. Experimental tasks with Ar:Ion lasers 6. Experimental tasks with Nd:YAG lasers 7. Experimental tasks with double-cavity Q-switched Nd:YAG lasers 8. Example solving: Photons in semiconductors - Fermi function, Fermi energy, absorption and emission rate 9. Example solving: Light-emitting diodes - injection electroluminescence, spectral width, quantum efficiency 10. Example solving: Laser diodes - peak gain coefficient, bandwidth, threshold current density 11. Example solving: Photoconductor and photodiode - quantum efficiency, sensitivity, response time, gain, noise 12. Example solving: Avalanche photodiodes - quantum efficiency, sensitivity, response time, gain and noise 13. Experimental tasks with lasers and photodetectors 14. Experimental tasks with lasers and photodetectors
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Monological explanation (lecture, presentation,briefing), Dialogue metods(conversation,discussion,brainstorming), Self-study (text study, reading, problematic tasks, practical tasks, experiments, research, written assignments), Demonstration, Project teaching
- Home preparation for classes
- 20 hours per semester
- Preparation for credit
- 14 hours per semester
- Preparation for exam
- 60 hours per semester
- Class attendance
- 56 hours per semester
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Bahaa, E., A., Saleh, Malvin, C., T.:. Základy fotoniky, svazek 1,2,3 a 4.. MATFYZPRESS, Praha, 1996. ISBN 80-85863-00-6.
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Kopecký, V.:. Učební texty k předmětu Základy fotoniky. TU Liberec, 1998.
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