Title :
Analysis of coherent shear waves generation by femtosecond laser pulse in nitride-based MQW
Author :
Gia-Wei Chern ; Chi-Kuang Sun
Author_Institution :
Graduate Inst. of Electro-Opt. Eng., Nat. Taiwan Univ., Taipei, Taiwan
Abstract :
Based on a macroscopic continuum theory, it is predicted that coherent transverse acoustic (TA) phonons, i.e. shear waves, can be photoexcited by launching femtosecond laser pulse into the InGaN/GaN MQW with general crystal growth directions.
Keywords :
III-V semiconductors; elastic waves; gallium compounds; high-speed optical techniques; indium compounds; semiconductor quantum wells; surface acoustic waves; surface phonons; InGaN-GaN; coherent shear waves generation; coherent transverse acoustic phonons; crystal growth directions; femtosecond laser pulse; macroscopic continuum theory; nitride-based multiple quantum well; photoexcited; Acoustic pulses; Acoustic waves; Acoustical engineering; Gallium nitride; Optical pulse generation; Optical pulses; Phonons; Quantum well devices; Space charge; 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.2003.238115
