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

fYear

2002

fDate

19-24 May 2002

Firstpage

218

Lastpage

219

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;

fLanguage

English

Publisher

ieee

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

Type

conf

DOI

10.1109/QELS.2002.1031336

Filename

1031336