Title :
Coherent phonon oscillations in ZnS excited by noncollinear optical parametric amplifier
Author :
Ohkubo, Y. ; Yabumoto, K. ; Tanaka, K. ; Kunugita, H. ; Ema, K.
Author_Institution :
Dept. of Phys., Sophia Univ., Tokyo, Japan
Abstract :
This study has observed coherent LO phonon oscillations in ZnS for the first time using a noncollinear optical parametric amplifier (NOPA) as a light source. Merits using NOPA are not only tunability in a visible region but also shorter pulse width than those of conventional optical parametric amplifiers. Therefore, NOPA is suitable for observing coherent phonon oscillations near the exciton resonance to investigate the interaction between phonons and excitons.
Keywords :
optical parametric amplifiers; phonon-exciton interactions; wide band gap semiconductors; zinc compounds; ZnS; coherent phonon oscillations; excited ZnSe; exciton resonance; noncollinear optical parametric amplifier; phonon-exciton interaction; visible region tunability; Excitons; Light sources; Nonlinear optics; Optical amplifiers; Optical pulses; Phonons; Pulse amplifiers; Semiconductor optical amplifiers; Stimulated emission; Zinc compounds;
Conference_Titel :
Quantum Electronics Conference, 2005. EQEC '05. European
Print_ISBN :
0-7803-8973-5
DOI :
10.1109/EQEC.2005.1567346
