Ultrashort pulse controlled all-optical modulation by intersubband-coupled-interband transitions in doped quantum wells

Author

Neogi, A. ; Yoshida, H. ; Mozume, Teruo ; Wada, O.

Author_Institution

FESTA Labs., Femtosecond Technol. Res. Assoc., Ibaraki, Japan

fYear

1998

fDate

10-14 Aug 1998

Firstpage

139

Lastpage

141

Abstract

Ultrafast all-optical modulation of interband (IB) resonant light by intersubband (ISB) resonant light in quantum wells (QW) is attractive for its application to multiplexers and demultiplexers for Tbit/s ultrafast OTDM systems. To achieve high nonlinearities in the femtosecond regime, we consider the application of ultrashort ISB light pulses maintaining the optical energy sufficiently low for device operations. We propose a novel scheme based on the simultaneous use of ISB-control and IB-signal lights both in the pulse form

Keywords

high-speed optical techniques; optical modulation; semiconductor quantum wells; doped quantum well; femtosecond nonlinearity; interband resonant light; intersubband coupled interband transition; intersubband resonant light; ultrafast all-optical modulation; ultrashort ISB light pulse; Absorption; Control systems; Laboratories; Lighting control; Optical modulation; Optical pulses; Pulse modulation; Resonance; Space vector pulse width modulation; Ultrafast optics;

fLanguage

English

Publisher

ieee

Conference_Titel

Nonlinear Optics '98: Materials, Fundamentals and Applications Topical Meeting

Conference_Location

Kauai, HI

Print_ISBN

0-7803-4950-4

Type

conf

DOI

10.1109/NLO.1998.710236

Filename

710236