Title :
Femtosecond pulse propagation at exciton resonance: polariton beats and optical precursor
Author :
Sakai, Masayuki ; Nakahara ; Kawase ; Kunugita ; Ema, K. ; Nagai, Masaharu ; Kuwata-Gonokami, Makoto
Author_Institution :
Dept. of Phys., Sophia Univ., Tokyo, Japan
Abstract :
Summary form only given. We perform pulse propagation experiments at the Z/sub 3/-exciton resonance of CuCl, and observe polariton beats and an optical precursor clearly. The exciton in CuCl has very large oscillator strength and long decay time. With increasing input-pulse intensity, polariton beats are strongly suppressed. We confirmed these experimental results with Lorentzian oscillator model and obtained good agreement.
Keywords :
copper compounds; excitons; optical harmonic generation; optical solitons; polaritons; time resolved spectra; Brillouin precursor; CuCl; Lorentzian oscillator model; SHG; Sommerfeld precursor; dephasing constant; exciton resonance; femtosecond pulse propagation; high purity single crystal; incoherent many-body effects; input-pulse intensity; large oscillator strength; long decay time; nonlinear suppression; optical precursor; polariton beats; Copper compounds; Excitons; Optical frequency conversion; Optical solitons;
Conference_Titel :
Quantum Electronics and Laser Science Conference, 2002. QELS '02. Technical Digest. Summaries of Papers Presented at the
Conference_Location :
Long Beach, CA, USA
Print_ISBN :
1-55752-708-3
DOI :
10.1109/QELS.2002.1031336
