Engineering Disorder in Opto-Electronics
Engineering Disorder in Opto-Electronics
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1. Engineering disorder in Opto-E…
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2. What is it all about
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3. Mitigating Hot Phonon Effects …
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4. Why GaN FET?
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5. Saturation Velocity
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6. What causes velocity saturatio…
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7. What causes velocity saturatio…
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8. What else?
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9. Roles of LO Phonons
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10. What is special about GaN
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11. What is special about GaN
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12. What is special about GaN
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13. Too few phonons?
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14. Real phonon bottleneck
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15. What we got?
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16. Data: Measured, APL 89 202117 …
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17. LO modes per electron (out of …
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18. Heating
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19. Evidence of Hot Phonons
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20. Evidence of Hot Phonons
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21. Evidence of Hot Phonons
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22. AS Raman Measurements of worki…
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23. AS Raman Measurements of worki…
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24. How to improve Neff/N
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25. This is what we want
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26. Disorder to the rescue
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27. Effect of isotope disorder
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28. Estimate of isotope disorder A…
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29. Clustering
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30. Results –LO phonon generatio…
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31. Results-relaxation rates
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32. Results -transport
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33. Preliminary Experiments: Growt…
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34. Preliminary Experiments: Fabri…
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35. First evidence of Increased Cu…
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36. Conclusions
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