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UAIPD 11-0028

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ott.ua.edu

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UAIPD 11-0028

  1. 1. UAIPD11-0028 “Pattened GaN Quasi-Phase Matched (QPM) Nonlinear Optical Crystal: Manufacturing Methods and its Application for High Power THz Sources” Dr. Seongsin Margaret Kim and Patrick Kung
  2. 2. • Current devices implementing THz frequencies – High loss due to high dispersion at pump laser – Uses 2 μm pump lasers, which is very rare and it has a high cost – Can use only low laser power – Very limited laser choices Problems with Current Devices
  3. 3. • The THz frequency range used is effective for molecular spectrometry, but harmless to humans • Structures used can extend the emission from mid-and far- infared to THz spectral range for effective radiation/detection of THz signals Our Technology
  4. 4. • We use a pattened GaN quasi-phase matched nonlinear optical crystal • More efficient due to strong mode confinement, high-facet reflectivity, and low-waveguide losses • No need for special lasers: pump lasers in 0.7-1 μm exist already exist (lowers cost) • Higher thermal conductivity than GaAs Advantages
  5. 5. • Dr. Seongsin Margret Kim – Associate Professor – 21 publications – 1 patent • Department seongsin@eng.ua.edu – Electrical and Computer Engineering – Center for Materials for Information Technology Inventor
  6. 6. • Dr. Patrick Kung – Associate Professor – Over 90 publications • Department patkung@eng.ua.edu – Electrical and Computer Engineering – Center for Materials for Information Technology Inventor
  7. 7. Office for Technology Transfer 720 2nd Ct E Tuscaloosa, AL 35401 UAIPD13-0014 OTT@UA.edu www.OTT.UA.edu

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