Title :
Anharmonic decay of longitudinal coherent acoustic phonons in GaN : Confirmation of Herring’s theory in the sub-THz regime
Author :
Liu, Tzu-Ming ; Sun, Shih-Ze ; Chang, Chieh-Feng ; Pan, Chang-Chi ; Chen, Guan-Ting ; Chyi, Jen-Inn ; Sun, Chi-Kuang
Author_Institution :
Grad. Inst. of Electro-Opt. Eng., Nat. Taiwan Univ., Taipei
Abstract :
We have successfully determined the anharmonic decay time of coherent longitudinal-acoustic-phonons in GaN. The temperature dependent anharmonic decay behavior is found to agree well with the Herringpsilas theory even up to the sub-THz frequency regime.
Keywords :
anharmonic lattice modes; high-speed optical techniques; phonons; GaN; Herringpsilas theory; anharmonic decay; longitudinal coherent acoustic phonons; temperature dependent; Acoustic scattering; Frequency; Gallium nitride; Optical pulses; Optical scattering; Particle scattering; Phonons; Quantum well devices; Temperature dependence; Temperature measurement; (000.2190) Experimental physics; (320.7120) Ultrafast phenomena;
Conference_Titel :
Lasers and Electro-Optics, 2006 and 2006 Quantum Electronics and Laser Science Conference. CLEO/QELS 2006. Conference on
Conference_Location :
Long Beach, CA
Print_ISBN :
978-1-55752-813-1
Electronic_ISBN :
978-1-55752-813-1
DOI :
10.1109/CLEO.2006.4628912
