Title :
Tera-hertz acousto-electric modulation in piezoelectric InGaN/GaN quantum wells using nano acoustic waves
Author :
Kung-Hsuan Lin ; Gia-Wei Chern ; Yue-Kai Huang ; Chi-Kuang Sun ; Keller, S. ; Mishra, U. ; DenBaars, S.P.
Author_Institution :
Graduate Inst. of Electro-Opt. Eng., Nat. Taiwan Univ., Taipei, Taiwan
Abstract :
We demonstrated an ultrafast electron distribution modulation up to THz frequency by using nano acoustic waves in InGaN/GaN multiple-quantum-wells. With amplitude-fixed acoustic waves, the electron energy distribution modulation was observed by using femtosecond optical technique.
Keywords :
III-V semiconductors; acoustoelectric effects; gallium compounds; high-speed optical techniques; indium compounds; piezoelectric materials; semiconductor quantum wells; submillimetre wave propagation; InGaN-GaN; amplitude-fixed acoustic waves; femtosecond optical technique; nanoacoustic waves; piezoelectric quantum wells; terahertz acousto-electric modulation; ultrafast electron distribution modulation; Absorption; Acoustic waves; Amplitude modulation; Electron optics; Frequency; Gallium nitride; Optical modulation; Optical pumping; Quantum well devices; Ultrafast optics;
Conference_Titel :
Quantum Electronics and Laser Science, 2003. QELS. Postconference Digest
Conference_Location :
Baltimore, MD, USA
Print_ISBN :
1-55752-749-0
DOI :
10.1109/QELS.2003.237807
